[{"date_created":"2018-09-11T14:21:12Z","publisher":"Elsevier BV","title":"Lift-off of mesoporous layers by electrochemical etching on Si (100) substrates with miscut of 6° off towards (111)","issue":"1","year":"2011","language":[{"iso":"eng"}],"keyword":["Porous Si","Layer transfer","Thin-film","Photovoltaics"],"publication":"Thin Solid Films","abstract":[{"lang":"eng","text":"Uniform mesoporous Si double layers are formed on 4 inch p-type < 100> wafers with an off orientation of 6º towards < 111> by means of electrochemical etching in ethanoic-based HF electrolytes. These substrates are of interest for the epitaxial growth of III–V compound semiconductor stacks on their top for the production of multi-junction solar cells and very thin electronic devices. We demonstrate transfer of porous layers after an annealing process in hydrogen atmosphere. Electron Back-Scatter Diffraction analysis confirms that the substrate orientation is conserved during the etching and annealing steps. Confocal μ-Raman spectroscopy analysis shows a decrease in the Raman signal intensity after etching and a subsequent increase after annealing while no shift is observed. By means of Atomic Force Microscopy, analysis the surface appearance after the etching and annealing steps can be visualized. The mean surface roughness varies during the process from 0.55 nm for the unprocessed wafers to 0.27 nm after etching and 0.78 nm after annealing. The decrease of average roughness after etching is caused by an electropolishing step prior to porous formation. Despite of slight increase of mean surface roughness after annealing the samples are still appropriate for high quality epitaxial growth and subsequent lift-off."}],"author":[{"last_name":"Garralaga Rojas","full_name":"Garralaga Rojas, E.","first_name":"E."},{"last_name":"Terheiden","full_name":"Terheiden, B.","first_name":"B."},{"full_name":"Plagwitz, H.","last_name":"Plagwitz","first_name":"H."},{"last_name":"Hensen","full_name":"Hensen, J.","first_name":"J."},{"last_name":"Wiedemeier","full_name":"Wiedemeier, V.","first_name":"V."},{"last_name":"Berth","full_name":"Berth, Gerhard","id":"53","first_name":"Gerhard"},{"first_name":"Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner","full_name":"Zrenner, Artur","id":"606"},{"full_name":"Brendel, R.","last_name":"Brendel","first_name":"R."}],"volume":520,"date_updated":"2022-01-06T07:01:00Z","doi":"10.1016/j.tsf.2011.07.063","publication_status":"published","publication_identifier":{"issn":["0040-6090"]},"citation":{"ama":"Garralaga Rojas E, Terheiden B, Plagwitz H, et al. Lift-off of mesoporous layers by electrochemical etching on Si (100) substrates with miscut of 6° off towards (111). <i>Thin Solid Films</i>. 2011;520(1):606-609. doi:<a href=\"https://doi.org/10.1016/j.tsf.2011.07.063\">10.1016/j.tsf.2011.07.063</a>","ieee":"E. Garralaga Rojas <i>et al.</i>, “Lift-off of mesoporous layers by electrochemical etching on Si (100) substrates with miscut of 6° off towards (111),” <i>Thin Solid Films</i>, vol. 520, no. 1, pp. 606–609, 2011.","chicago":"Garralaga Rojas, E., B. Terheiden, H. Plagwitz, J. Hensen, V. Wiedemeier, Gerhard Berth, Artur Zrenner, and R. Brendel. “Lift-off of Mesoporous Layers by Electrochemical Etching on Si (100) Substrates with Miscut of 6° off towards (111).” <i>Thin Solid Films</i> 520, no. 1 (2011): 606–9. <a href=\"https://doi.org/10.1016/j.tsf.2011.07.063\">https://doi.org/10.1016/j.tsf.2011.07.063</a>.","short":"E. Garralaga Rojas, B. Terheiden, H. Plagwitz, J. Hensen, V. Wiedemeier, G. Berth, A. Zrenner, R. Brendel, Thin Solid Films 520 (2011) 606–609.","bibtex":"@article{Garralaga Rojas_Terheiden_Plagwitz_Hensen_Wiedemeier_Berth_Zrenner_Brendel_2011, title={Lift-off of mesoporous layers by electrochemical etching on Si (100) substrates with miscut of 6° off towards (111)}, volume={520}, DOI={<a href=\"https://doi.org/10.1016/j.tsf.2011.07.063\">10.1016/j.tsf.2011.07.063</a>}, number={1}, journal={Thin Solid Films}, publisher={Elsevier BV}, author={Garralaga Rojas, E. and Terheiden, B. and Plagwitz, H. and Hensen, J. and Wiedemeier, V. and Berth, Gerhard and Zrenner, Artur and Brendel, R.}, year={2011}, pages={606–609} }","mla":"Garralaga Rojas, E., et al. “Lift-off of Mesoporous Layers by Electrochemical Etching on Si (100) Substrates with Miscut of 6° off towards (111).” <i>Thin Solid Films</i>, vol. 520, no. 1, Elsevier BV, 2011, pp. 606–09, doi:<a href=\"https://doi.org/10.1016/j.tsf.2011.07.063\">10.1016/j.tsf.2011.07.063</a>.","apa":"Garralaga Rojas, E., Terheiden, B., Plagwitz, H., Hensen, J., Wiedemeier, V., Berth, G., … Brendel, R. (2011). Lift-off of mesoporous layers by electrochemical etching on Si (100) substrates with miscut of 6° off towards (111). <i>Thin Solid Films</i>, <i>520</i>(1), 606–609. <a href=\"https://doi.org/10.1016/j.tsf.2011.07.063\">https://doi.org/10.1016/j.tsf.2011.07.063</a>"},"intvolume":"       520","page":"606-609","user_id":"49428","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"}],"_id":"4379","article_type":"original","type":"journal_article","status":"public"},{"language":[{"iso":"eng"}],"funded_apc":"1","_id":"13561","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"290"},{"_id":"35"},{"_id":"230"}],"user_id":"16199","status":"public","publication":"Ferroelectrics","type":"journal_article","title":"Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy","doi":"10.1080/00150193.2011.594774","date_updated":"2025-12-05T10:43:51Z","volume":420,"date_created":"2019-10-01T08:48:15Z","author":[{"last_name":"Berth","id":"53","full_name":"Berth, Gerhard","first_name":"Gerhard"},{"full_name":"Hahn, Wjatscheslaw","last_name":"Hahn","first_name":"Wjatscheslaw"},{"first_name":"Volker","last_name":"Wiedemeier","full_name":"Wiedemeier, Volker"},{"first_name":"Artur","id":"606","full_name":"Zrenner, Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner"},{"first_name":"Simone","last_name":"Sanna","full_name":"Sanna, Simone"},{"full_name":"Schmidt, Wolf Gero","id":"468","orcid":"0000-0002-2717-5076","last_name":"Schmidt","first_name":"Wolf Gero"}],"year":"2011","intvolume":"       420","page":"44-48","citation":{"ama":"Berth G, Hahn W, Wiedemeier V, Zrenner A, Sanna S, Schmidt WG. Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy. <i>Ferroelectrics</i>. 2011;420:44-48. doi:<a href=\"https://doi.org/10.1080/00150193.2011.594774\">10.1080/00150193.2011.594774</a>","ieee":"G. Berth, W. Hahn, V. Wiedemeier, A. Zrenner, S. Sanna, and W. G. Schmidt, “Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy,” <i>Ferroelectrics</i>, vol. 420, pp. 44–48, 2011, doi: <a href=\"https://doi.org/10.1080/00150193.2011.594774\">10.1080/00150193.2011.594774</a>.","chicago":"Berth, Gerhard, Wjatscheslaw Hahn, Volker Wiedemeier, Artur Zrenner, Simone Sanna, and Wolf Gero Schmidt. “Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy.” <i>Ferroelectrics</i> 420 (2011): 44–48. <a href=\"https://doi.org/10.1080/00150193.2011.594774\">https://doi.org/10.1080/00150193.2011.594774</a>.","apa":"Berth, G., Hahn, W., Wiedemeier, V., Zrenner, A., Sanna, S., &#38; Schmidt, W. G. (2011). Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy. <i>Ferroelectrics</i>, <i>420</i>, 44–48. <a href=\"https://doi.org/10.1080/00150193.2011.594774\">https://doi.org/10.1080/00150193.2011.594774</a>","bibtex":"@article{Berth_Hahn_Wiedemeier_Zrenner_Sanna_Schmidt_2011, title={Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy}, volume={420}, DOI={<a href=\"https://doi.org/10.1080/00150193.2011.594774\">10.1080/00150193.2011.594774</a>}, journal={Ferroelectrics}, author={Berth, Gerhard and Hahn, Wjatscheslaw and Wiedemeier, Volker and Zrenner, Artur and Sanna, Simone and Schmidt, Wolf Gero}, year={2011}, pages={44–48} }","short":"G. Berth, W. Hahn, V. Wiedemeier, A. Zrenner, S. Sanna, W.G. Schmidt, Ferroelectrics 420 (2011) 44–48.","mla":"Berth, Gerhard, et al. “Imaging of the Ferroelectric Domain Structures by Confocal Raman Spectroscopy.” <i>Ferroelectrics</i>, vol. 420, 2011, pp. 44–48, doi:<a href=\"https://doi.org/10.1080/00150193.2011.594774\">10.1080/00150193.2011.594774</a>."},"publication_identifier":{"issn":["0015-0193","1563-5112"]},"publication_status":"published"},{"language":[{"iso":"eng"}],"funded_apc":"1","_id":"13823","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"35"},{"_id":"290"},{"_id":"230"},{"_id":"27"}],"user_id":"16199","status":"public","publication":"IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control","type":"journal_article","title":"Vibrational properties of the LiNbO3 z-surfaces","doi":"10.1109/tuffc.2011.2012","date_updated":"2025-12-16T07:51:55Z","volume":58,"author":[{"last_name":"Sanna","full_name":"Sanna, S.","first_name":"S."},{"first_name":"Gerhard","full_name":"Berth, Gerhard","id":"53","last_name":"Berth"},{"last_name":"Hahn","full_name":"Hahn, W.","first_name":"W."},{"first_name":"A.","last_name":"Widhalm","full_name":"Widhalm, A."},{"first_name":"Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner","full_name":"Zrenner, Artur","id":"606"},{"last_name":"Schmidt","orcid":"0000-0002-2717-5076","full_name":"Schmidt, Wolf Gero","id":"468","first_name":"Wolf Gero"}],"date_created":"2019-10-15T07:12:33Z","year":"2011","intvolume":"        58","page":"1751-1756","citation":{"ama":"Sanna S, Berth G, Hahn W, Widhalm A, Zrenner A, Schmidt WG. Vibrational properties of the LiNbO3 z-surfaces. <i>IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control</i>. 2011;58(9):1751-1756. doi:<a href=\"https://doi.org/10.1109/tuffc.2011.2012\">10.1109/tuffc.2011.2012</a>","ieee":"S. Sanna, G. Berth, W. Hahn, A. Widhalm, A. Zrenner, and W. G. Schmidt, “Vibrational properties of the LiNbO3 z-surfaces,” <i>IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control</i>, vol. 58, no. 9, pp. 1751–1756, 2011, doi: <a href=\"https://doi.org/10.1109/tuffc.2011.2012\">10.1109/tuffc.2011.2012</a>.","chicago":"Sanna, S., Gerhard Berth, W. Hahn, A. Widhalm, Artur Zrenner, and Wolf Gero Schmidt. “Vibrational Properties of the LiNbO3 Z-Surfaces.” <i>IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control</i> 58, no. 9 (2011): 1751–56. <a href=\"https://doi.org/10.1109/tuffc.2011.2012\">https://doi.org/10.1109/tuffc.2011.2012</a>.","apa":"Sanna, S., Berth, G., Hahn, W., Widhalm, A., Zrenner, A., &#38; Schmidt, W. G. (2011). Vibrational properties of the LiNbO3 z-surfaces. <i>IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control</i>, <i>58</i>(9), 1751–1756. <a href=\"https://doi.org/10.1109/tuffc.2011.2012\">https://doi.org/10.1109/tuffc.2011.2012</a>","short":"S. Sanna, G. Berth, W. Hahn, A. Widhalm, A. Zrenner, W.G. Schmidt, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 58 (2011) 1751–1756.","bibtex":"@article{Sanna_Berth_Hahn_Widhalm_Zrenner_Schmidt_2011, title={Vibrational properties of the LiNbO3 z-surfaces}, volume={58}, DOI={<a href=\"https://doi.org/10.1109/tuffc.2011.2012\">10.1109/tuffc.2011.2012</a>}, number={9}, journal={IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control}, author={Sanna, S. and Berth, Gerhard and Hahn, W. and Widhalm, A. and Zrenner, Artur and Schmidt, Wolf Gero}, year={2011}, pages={1751–1756} }","mla":"Sanna, S., et al. “Vibrational Properties of the LiNbO3 Z-Surfaces.” <i>IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control</i>, vol. 58, no. 9, 2011, pp. 1751–56, doi:<a href=\"https://doi.org/10.1109/tuffc.2011.2012\">10.1109/tuffc.2011.2012</a>."},"publication_identifier":{"issn":["0885-3010"]},"publication_status":"published","issue":"9"},{"publication_status":"published","publication_identifier":{"issn":["0015-0193","1563-5112"]},"issue":"1","year":"2011","citation":{"ieee":"S. Sanna, G. Berth, W. Hahn, A. Widhalm, A. Zrenner, and W. G. Schmidt, “Localised Phonon Modes at LiNbO3(0001) Surfaces,” <i>Ferroelectrics</i>, vol. 419, no. 1, pp. 1–8, 2011, doi: <a href=\"https://doi.org/10.1080/00150193.2011.594396\">10.1080/00150193.2011.594396</a>.","chicago":"Sanna, S., Gerhard Berth, W. Hahn, A. Widhalm, Artur Zrenner, and Wolf Gero Schmidt. “Localised Phonon Modes at LiNbO3(0001) Surfaces.” <i>Ferroelectrics</i> 419, no. 1 (2011): 1–8. <a href=\"https://doi.org/10.1080/00150193.2011.594396\">https://doi.org/10.1080/00150193.2011.594396</a>.","ama":"Sanna S, Berth G, Hahn W, Widhalm A, Zrenner A, Schmidt WG. Localised Phonon Modes at LiNbO3(0001) Surfaces. <i>Ferroelectrics</i>. 2011;419(1):1-8. doi:<a href=\"https://doi.org/10.1080/00150193.2011.594396\">10.1080/00150193.2011.594396</a>","short":"S. Sanna, G. Berth, W. Hahn, A. Widhalm, A. Zrenner, W.G. Schmidt, Ferroelectrics 419 (2011) 1–8.","bibtex":"@article{Sanna_Berth_Hahn_Widhalm_Zrenner_Schmidt_2011, title={Localised Phonon Modes at LiNbO3(0001) Surfaces}, volume={419}, DOI={<a href=\"https://doi.org/10.1080/00150193.2011.594396\">10.1080/00150193.2011.594396</a>}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Sanna, S. and Berth, Gerhard and Hahn, W. and Widhalm, A. and Zrenner, Artur and Schmidt, Wolf Gero}, year={2011}, pages={1–8} }","mla":"Sanna, S., et al. “Localised Phonon Modes at LiNbO3(0001) Surfaces.” <i>Ferroelectrics</i>, vol. 419, no. 1, Informa UK Limited, 2011, pp. 1–8, doi:<a href=\"https://doi.org/10.1080/00150193.2011.594396\">10.1080/00150193.2011.594396</a>.","apa":"Sanna, S., Berth, G., Hahn, W., Widhalm, A., Zrenner, A., &#38; Schmidt, W. G. (2011). Localised Phonon Modes at LiNbO3(0001) Surfaces. <i>Ferroelectrics</i>, <i>419</i>(1), 1–8. <a href=\"https://doi.org/10.1080/00150193.2011.594396\">https://doi.org/10.1080/00150193.2011.594396</a>"},"page":"1-8","intvolume":"       419","date_updated":"2025-12-16T11:29:20Z","publisher":"Informa UK Limited","author":[{"first_name":"S.","last_name":"Sanna","full_name":"Sanna, S."},{"id":"53","full_name":"Berth, Gerhard","last_name":"Berth","first_name":"Gerhard"},{"full_name":"Hahn, W.","last_name":"Hahn","first_name":"W."},{"first_name":"A.","last_name":"Widhalm","full_name":"Widhalm, A."},{"orcid":"0000-0002-5190-0944","last_name":"Zrenner","full_name":"Zrenner, Artur","id":"606","first_name":"Artur"},{"id":"468","full_name":"Schmidt, Wolf Gero","orcid":"0000-0002-2717-5076","last_name":"Schmidt","first_name":"Wolf Gero"}],"date_created":"2018-09-20T11:26:53Z","volume":419,"title":"Localised Phonon Modes at LiNbO3(0001) Surfaces","doi":"10.1080/00150193.2011.594396","type":"journal_article","publication":"Ferroelectrics","abstract":[{"lang":"eng","text":"The vibrational properties of the LiNbO3 (0001) surfaces have been investigated both from first principles and with Raman spectroscopy measurements. Firstly, the phonon modes of bulk and of the (0001) surface are calculated by means of the density functional theory. Our calculations reveal the existence of localised vibrational modes both at the positive and at the negative surface. The surface vibrations are found at energies above and within the bulk bands. Phonon modes localised at the positive and at the negative surface differ substantially. In a second step, the Raman spectra of LiNbO3 bulk and of the two surfaces have been measured. Raman spectroscopy is shown to be sensitive to differences between bulk and surface and between positive and negative surface. The calculated and measured frequencies are in agreement within the error of the method."}],"status":"public","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"4543","user_id":"16199","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"},{"_id":"170"},{"_id":"295"},{"_id":"35"},{"_id":"27"}],"article_type":"original","language":[{"iso":"eng"}]},{"date_updated":"2022-01-06T07:01:09Z","author":[{"full_name":"Herres-Pawlis, Sonja","last_name":"Herres-Pawlis","first_name":"Sonja"},{"first_name":"Gerhard","full_name":"Berth, Gerhard","id":"53","last_name":"Berth"},{"first_name":"Volker","last_name":"Wiedemeier","full_name":"Wiedemeier, Volker"},{"first_name":"Ludger","last_name":"Schmidt","full_name":"Schmidt, Ludger"},{"first_name":"Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner","full_name":"Zrenner, Artur","id":"606"},{"first_name":"Hans-Joachim","full_name":"Warnecke, Hans-Joachim","last_name":"Warnecke"}],"volume":130,"doi":"10.1016/j.jlumin.2010.05.012","publication_status":"published","publication_identifier":{"issn":["0022-2313"]},"citation":{"chicago":"Herres-Pawlis, Sonja, Gerhard Berth, Volker Wiedemeier, Ludger Schmidt, Artur Zrenner, and Hans-Joachim Warnecke. “Oxygen Sensing by Fluorescence Quenching of [Cu(Btmgp)I].” <i>Journal of Luminescence</i> 130, no. 10 (2010): 1958–62. <a href=\"https://doi.org/10.1016/j.jlumin.2010.05.012\">https://doi.org/10.1016/j.jlumin.2010.05.012</a>.","ieee":"S. Herres-Pawlis, G. Berth, V. Wiedemeier, L. Schmidt, A. Zrenner, and H.-J. Warnecke, “Oxygen sensing by fluorescence quenching of [Cu(btmgp)I],” <i>Journal of Luminescence</i>, vol. 130, no. 10, pp. 1958–1962, 2010.","ama":"Herres-Pawlis S, Berth G, Wiedemeier V, Schmidt L, Zrenner A, Warnecke H-J. Oxygen sensing by fluorescence quenching of [Cu(btmgp)I]. <i>Journal of Luminescence</i>. 2010;130(10):1958-1962. doi:<a href=\"https://doi.org/10.1016/j.jlumin.2010.05.012\">10.1016/j.jlumin.2010.05.012</a>","apa":"Herres-Pawlis, S., Berth, G., Wiedemeier, V., Schmidt, L., Zrenner, A., &#38; Warnecke, H.-J. (2010). Oxygen sensing by fluorescence quenching of [Cu(btmgp)I]. <i>Journal of Luminescence</i>, <i>130</i>(10), 1958–1962. <a href=\"https://doi.org/10.1016/j.jlumin.2010.05.012\">https://doi.org/10.1016/j.jlumin.2010.05.012</a>","bibtex":"@article{Herres-Pawlis_Berth_Wiedemeier_Schmidt_Zrenner_Warnecke_2010, title={Oxygen sensing by fluorescence quenching of [Cu(btmgp)I]}, volume={130}, DOI={<a href=\"https://doi.org/10.1016/j.jlumin.2010.05.012\">10.1016/j.jlumin.2010.05.012</a>}, number={10}, journal={Journal of Luminescence}, publisher={Elsevier BV}, author={Herres-Pawlis, Sonja and Berth, Gerhard and Wiedemeier, Volker and Schmidt, Ludger and Zrenner, Artur and Warnecke, Hans-Joachim}, year={2010}, pages={1958–1962} }","mla":"Herres-Pawlis, Sonja, et al. “Oxygen Sensing by Fluorescence Quenching of [Cu(Btmgp)I].” <i>Journal of Luminescence</i>, vol. 130, no. 10, Elsevier BV, 2010, pp. 1958–62, doi:<a href=\"https://doi.org/10.1016/j.jlumin.2010.05.012\">10.1016/j.jlumin.2010.05.012</a>.","short":"S. Herres-Pawlis, G. Berth, V. Wiedemeier, L. Schmidt, A. Zrenner, H.-J. Warnecke, Journal of Luminescence 130 (2010) 1958–1962."},"intvolume":"       130","page":"1958-1962","_id":"4548","user_id":"49428","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"}],"article_type":"original","type":"journal_article","status":"public","publisher":"Elsevier BV","date_created":"2018-09-20T12:31:16Z","title":"Oxygen sensing by fluorescence quenching of [Cu(btmgp)I]","issue":"10","year":"2010","keyword":["Copper Oxygen Fluorescence quenching N donor ligands"],"language":[{"iso":"eng"}],"publication":"Journal of Luminescence","abstract":[{"text":"A fluorescence study of acetonitrile solutions of bis(tetramethylguanidine)propane, copper(I)-iodide and [Cu(btmgp)I] was performed and the chemical reaction of the latter species with O2 was investigated at room temperature. The actual quenching process via O2 gassing was studied and an exponential dependence of the fluorescence intensity with respect to the complex concentration was observed.\r\nFurthermore the survey was deepened on time resolved fluorescence properties of solved [Cu(btmgp)I] in a wider concentration range. The applicability of this complex for O2 sensing inside a microreactor system was proven by confocal fluorescence measurements. It was shown that the investigated system can be used for oxygen sensing in the copper concentration range from 10−2 to 10−9 mol/l.","lang":"eng"}]},{"status":"public","type":"journal_article","article_type":"original","article_number":"075003","user_id":"49428","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"}],"_id":"4549","citation":{"chicago":"Larramendi, E M, Gerhard Berth, V Wiedemeier, K-P Hüsch, Artur Zrenner, U Woggon, E Tschumak, K Lischka, and D Schikora. “Intensity Enhancement of Te Raman Modes by Laser Damage in ZnTe Epilayers.” <i>Semiconductor Science and Technology</i> 25, no. 7 (2010). <a href=\"https://doi.org/10.1088/0268-1242/25/7/075003\">https://doi.org/10.1088/0268-1242/25/7/075003</a>.","ieee":"E. M. Larramendi <i>et al.</i>, “Intensity enhancement of Te Raman modes by laser damage in ZnTe epilayers,” <i>Semiconductor Science and Technology</i>, vol. 25, no. 7, 2010.","ama":"Larramendi EM, Berth G, Wiedemeier V, et al. Intensity enhancement of Te Raman modes by laser damage in ZnTe epilayers. <i>Semiconductor Science and Technology</i>. 2010;25(7). doi:<a href=\"https://doi.org/10.1088/0268-1242/25/7/075003\">10.1088/0268-1242/25/7/075003</a>","short":"E.M. Larramendi, G. Berth, V. Wiedemeier, K.-P. Hüsch, A. Zrenner, U. Woggon, E. Tschumak, K. Lischka, D. Schikora, Semiconductor Science and Technology 25 (2010).","mla":"Larramendi, E. M., et al. “Intensity Enhancement of Te Raman Modes by Laser Damage in ZnTe Epilayers.” <i>Semiconductor Science and Technology</i>, vol. 25, no. 7, 075003, IOP Publishing, 2010, doi:<a href=\"https://doi.org/10.1088/0268-1242/25/7/075003\">10.1088/0268-1242/25/7/075003</a>.","bibtex":"@article{Larramendi_Berth_Wiedemeier_Hüsch_Zrenner_Woggon_Tschumak_Lischka_Schikora_2010, title={Intensity enhancement of Te Raman modes by laser damage in ZnTe epilayers}, volume={25}, DOI={<a href=\"https://doi.org/10.1088/0268-1242/25/7/075003\">10.1088/0268-1242/25/7/075003</a>}, number={7075003}, journal={Semiconductor Science and Technology}, publisher={IOP Publishing}, author={Larramendi, E M and Berth, Gerhard and Wiedemeier, V and Hüsch, K-P and Zrenner, Artur and Woggon, U and Tschumak, E and Lischka, K and Schikora, D}, year={2010} }","apa":"Larramendi, E. M., Berth, G., Wiedemeier, V., Hüsch, K.-P., Zrenner, A., Woggon, U., … Schikora, D. (2010). Intensity enhancement of Te Raman modes by laser damage in ZnTe epilayers. <i>Semiconductor Science and Technology</i>, <i>25</i>(7). <a href=\"https://doi.org/10.1088/0268-1242/25/7/075003\">https://doi.org/10.1088/0268-1242/25/7/075003</a>"},"intvolume":"        25","publication_status":"published","publication_identifier":{"issn":["0268-1242","1361-6641"]},"doi":"10.1088/0268-1242/25/7/075003","author":[{"first_name":"E M","last_name":"Larramendi","full_name":"Larramendi, E M"},{"full_name":"Berth, Gerhard","id":"53","last_name":"Berth","first_name":"Gerhard"},{"first_name":"V","last_name":"Wiedemeier","full_name":"Wiedemeier, V"},{"first_name":"K-P","last_name":"Hüsch","full_name":"Hüsch, K-P"},{"id":"606","full_name":"Zrenner, Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner","first_name":"Artur"},{"full_name":"Woggon, U","last_name":"Woggon","first_name":"U"},{"first_name":"E","last_name":"Tschumak","full_name":"Tschumak, E"},{"first_name":"K","last_name":"Lischka","full_name":"Lischka, K"},{"full_name":"Schikora, D","last_name":"Schikora","first_name":"D"}],"volume":25,"date_updated":"2022-01-06T07:01:09Z","abstract":[{"lang":"eng","text":"Damage caused by laser irradiation on the surface of ZnTe epilayers was studied by micro-Raman and atomic force microscopy (AFM). ZnTe LO-phonon overtones up to four order and TO + (n − 1)LO zone-center phonons were observed in the resonant micro-Raman spectra at room temperature. Discrepancies in the literature regarding the origin of two features observed at low frequencies around 120 and 140 cm−1 in the Raman spectrum of ZnTe are discussed and resolved. These Raman peaks were not detected by using a low excitation laser power density on a Zn-terminated ZnTe surface; however, with the increase of the laser power density they were found to arise irreversibly. The correspondence of these peaks in a wave number with the strongest Raman peaks of the crystalline tellurium phase and the intensity enhancement behavior with the laser power in a similar way as for CdTe strongly suggests the formation of crystalline tellurium aggregates on the layer surface due to laser irradiation damage. AFM data reveal the occurrence of laser ablation on the ZnTe surface even though the surface temperature of the sample is below the melting point."}],"publication":"Semiconductor Science and Technology","language":[{"iso":"eng"}],"year":"2010","issue":"7","title":"Intensity enhancement of Te Raman modes by laser damage in ZnTe epilayers","date_created":"2018-09-20T12:35:35Z","publisher":"IOP Publishing"},{"status":"public","abstract":[{"lang":"ger","text":"Strömungsbasierte Mischprozesse sind grundlegender Bestandteil vieler chemischer Prozesse. Realisierbare Mischzeiten reichen von einigen Millisekunden bis zu Sekunden, wobei die vollständige Homogenisierung oft nicht sichergestellt ist. Werden kinetische Parameter chemischer Reaktionen dieses Zeitskalenbereichs ohne Berücksichtigung der Mischprozesse bestimmt, sind sie mischungsmaskiert und geben die inhärente chemische Kinetik nicht wieder. In dieser Arbeit wird die Validierung und Anwendung einer Methode zur Bestimmung inhärenter chemischer Kinetiken von in Flüssigphase ablaufenden chemischen Reaktionen im stationären, laminaren Flachbettmikroreaktor vorgestellt. Der verfolgte Ansatz basiert auf der mechanistischen Modellierung der Molmengen unter Berücksichtigung von Konvektion, Diffusion und Reaktion und der Bestimmung der unbekannten Parameter durch Anpassung des Modells an experimentell ermittelte Konzentrationsverläufe."}],"type":"journal_article","publication":"Chemie Ingenieur Technik","language":[{"iso":"ger"}],"article_type":"original","user_id":"49428","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"}],"_id":"6619","citation":{"bibtex":"@article{Warnecke_Bothe_Zrenner_Berth_Hüsch_2010, title={Modellbasierte Bestimmung lokal gültiger Kinetiken chemischer Reaktionen in Flüssigphase mittels Flachbettmikroreaktor*}, volume={82}, DOI={<a href=\"https://doi.org/10.1002/cite.200900169\">10.1002/cite.200900169</a>}, number={3}, journal={Chemie Ingenieur Technik}, publisher={Wiley}, author={Warnecke, H.-J. and Bothe, D. and Zrenner, Artur and Berth, Gerhard and Hüsch, K.-P.}, year={2010}, pages={251–258} }","mla":"Warnecke, H. J., et al. “Modellbasierte Bestimmung lokal gültiger Kinetiken chemischer Reaktionen in Flüssigphase mittels Flachbettmikroreaktor*.” <i>Chemie Ingenieur Technik</i>, vol. 82, no. 3, Wiley, 2010, pp. 251–58, doi:<a href=\"https://doi.org/10.1002/cite.200900169\">10.1002/cite.200900169</a>.","short":"H.-J. Warnecke, D. Bothe, A. Zrenner, G. Berth, K.-P. Hüsch, Chemie Ingenieur Technik 82 (2010) 251–258.","apa":"Warnecke, H.-J., Bothe, D., Zrenner, A., Berth, G., &#38; Hüsch, K.-P. (2010). Modellbasierte Bestimmung lokal gültiger Kinetiken chemischer Reaktionen in Flüssigphase mittels Flachbettmikroreaktor*. <i>Chemie Ingenieur Technik</i>, <i>82</i>(3), 251–258. <a href=\"https://doi.org/10.1002/cite.200900169\">https://doi.org/10.1002/cite.200900169</a>","chicago":"Warnecke, H.-J., D. Bothe, Artur Zrenner, Gerhard Berth, and K.-P. Hüsch. “Modellbasierte Bestimmung lokal gültiger Kinetiken chemischer Reaktionen in Flüssigphase mittels Flachbettmikroreaktor*.” <i>Chemie Ingenieur Technik</i> 82, no. 3 (2010): 251–58. <a href=\"https://doi.org/10.1002/cite.200900169\">https://doi.org/10.1002/cite.200900169</a>.","ieee":"H.-J. Warnecke, D. Bothe, A. Zrenner, G. Berth, and K.-P. Hüsch, “Modellbasierte Bestimmung lokal gültiger Kinetiken chemischer Reaktionen in Flüssigphase mittels Flachbettmikroreaktor*,” <i>Chemie Ingenieur Technik</i>, vol. 82, no. 3, pp. 251–258, 2010.","ama":"Warnecke H-J, Bothe D, Zrenner A, Berth G, Hüsch K-P. Modellbasierte Bestimmung lokal gültiger Kinetiken chemischer Reaktionen in Flüssigphase mittels Flachbettmikroreaktor*. <i>Chemie Ingenieur Technik</i>. 2010;82(3):251-258. doi:<a href=\"https://doi.org/10.1002/cite.200900169\">10.1002/cite.200900169</a>"},"intvolume":"        82","page":"251-258","year":"2010","issue":"3","publication_status":"published","publication_identifier":{"issn":["0009-286X","1522-2640"]},"doi":"10.1002/cite.200900169","title":"Modellbasierte Bestimmung lokal gültiger Kinetiken chemischer Reaktionen in Flüssigphase mittels Flachbettmikroreaktor*","author":[{"first_name":"H.-J.","last_name":"Warnecke","full_name":"Warnecke, H.-J."},{"full_name":"Bothe, D.","last_name":"Bothe","first_name":"D."},{"first_name":"Artur","id":"606","full_name":"Zrenner, Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944"},{"first_name":"Gerhard","last_name":"Berth","full_name":"Berth, Gerhard","id":"53"},{"first_name":"K.-P.","full_name":"Hüsch, K.-P.","last_name":"Hüsch"}],"date_created":"2019-01-10T10:13:09Z","volume":82,"date_updated":"2022-01-06T07:03:13Z","publisher":"Wiley"},{"publication_status":"published","publication_identifier":{"issn":["0015-0193","1563-5112"]},"citation":{"ama":"Berth G, Wiedemeier V, Hüsch K-P, et al. Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy. <i>Ferroelectrics</i>. 2009;389(1):132-141. doi:<a href=\"https://doi.org/10.1080/00150190902993267\">10.1080/00150190902993267</a>","chicago":"Berth, Gerhard, Volker Wiedemeier, Klaus-Peter Hüsch, Li Gui, Hui Hu, Wolfgang Sohler, and Artur Zrenner. “Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy.” <i>Ferroelectrics</i> 389, no. 1 (2009): 132–41. <a href=\"https://doi.org/10.1080/00150190902993267\">https://doi.org/10.1080/00150190902993267</a>.","ieee":"G. Berth <i>et al.</i>, “Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy,” <i>Ferroelectrics</i>, vol. 389, no. 1, pp. 132–141, 2009.","apa":"Berth, G., Wiedemeier, V., Hüsch, K.-P., Gui, L., Hu, H., Sohler, W., &#38; Zrenner, A. (2009). Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy. <i>Ferroelectrics</i>, <i>389</i>(1), 132–141. <a href=\"https://doi.org/10.1080/00150190902993267\">https://doi.org/10.1080/00150190902993267</a>","bibtex":"@article{Berth_Wiedemeier_Hüsch_Gui_Hu_Sohler_Zrenner_2009, title={Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy}, volume={389}, DOI={<a href=\"https://doi.org/10.1080/00150190902993267\">10.1080/00150190902993267</a>}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Berth, Gerhard and Wiedemeier, Volker and Hüsch, Klaus-Peter and Gui, Li and Hu, Hui and Sohler, Wolfgang and Zrenner, Artur}, year={2009}, pages={132–141} }","mla":"Berth, Gerhard, et al. “Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy.” <i>Ferroelectrics</i>, vol. 389, no. 1, Informa UK Limited, 2009, pp. 132–41, doi:<a href=\"https://doi.org/10.1080/00150190902993267\">10.1080/00150190902993267</a>.","short":"G. Berth, V. Wiedemeier, K.-P. Hüsch, L. Gui, H. Hu, W. Sohler, A. Zrenner, Ferroelectrics 389 (2009) 132–141."},"intvolume":"       389","page":"132-141","author":[{"first_name":"Gerhard","last_name":"Berth","full_name":"Berth, Gerhard","id":"53"},{"first_name":"Volker","full_name":"Wiedemeier, Volker","last_name":"Wiedemeier"},{"last_name":"Hüsch","full_name":"Hüsch, Klaus-Peter","first_name":"Klaus-Peter"},{"last_name":"Gui","full_name":"Gui, Li","first_name":"Li"},{"last_name":"Hu","full_name":"Hu, Hui","first_name":"Hui"},{"last_name":"Sohler","full_name":"Sohler, Wolfgang","first_name":"Wolfgang"},{"id":"606","full_name":"Zrenner, Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944","first_name":"Artur"}],"volume":389,"date_updated":"2022-01-06T07:01:09Z","doi":"10.1080/00150190902993267","type":"journal_article","status":"public","user_id":"49428","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"}],"_id":"4553","article_type":"original","issue":"1","year":"2009","date_created":"2018-09-20T12:54:14Z","publisher":"Informa UK Limited","title":"Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy","publication":"Ferroelectrics","abstract":[{"text":"We present results on ferroelectric micro-domains obtained by confocal second harmonic microscopy. The high potential of this technique is demonstrated by imaging periodic ferroelectric domain structures in the surface of planar X-cut lithium niobate (LN) and in the body of ridges fabricated by plasma etching on X-cut LN as well. In both cases the measured second harmonic signal reveals a strong contrast between inverted and non-inverted domain sections. This enabled a depth-resolved non-destructive tomography of micro-domains in ridge structures in all three dimensions.","lang":"eng"}],"language":[{"iso":"eng"}],"keyword":["Nonlinear microscopy","ferroelectric micro-domains","confocal imaging","LiNbO3"]},{"_id":"4555","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"}],"user_id":"49428","article_type":"original","type":"journal_article","status":"public","date_updated":"2022-01-06T07:01:09Z","volume":40,"author":[{"last_name":"Panfilova","full_name":"Panfilova, M.","first_name":"M."},{"first_name":"A.","full_name":"Pawlis, A.","last_name":"Pawlis"},{"first_name":"C.","last_name":"Arens","full_name":"Arens, C."},{"first_name":"S. Michaelis","last_name":"de Vasconcellos","full_name":"de Vasconcellos, S. Michaelis"},{"first_name":"Gerhard","last_name":"Berth","full_name":"Berth, Gerhard","id":"53"},{"first_name":"K.P.","last_name":"Hüsch","full_name":"Hüsch, K.P."},{"full_name":"Wiedemeier, V.","last_name":"Wiedemeier","first_name":"V."},{"last_name":"Zrenner","orcid":"0000-0002-5190-0944","id":"606","full_name":"Zrenner, Artur","first_name":"Artur"},{"full_name":"Lischka, K.","last_name":"Lischka","first_name":"K."}],"doi":"10.1016/j.mejo.2008.07.056","publication_identifier":{"issn":["0026-2692"]},"publication_status":"published","page":"221-223","intvolume":"        40","citation":{"mla":"Panfilova, M., et al. “Micro-Raman Imaging and Micro-Photoluminescence Measurements of Strain in ZnMgSe/ZnSe Microdiscs.” <i>Microelectronics Journal</i>, vol. 40, no. 2, Elsevier BV, 2008, pp. 221–23, doi:<a href=\"https://doi.org/10.1016/j.mejo.2008.07.056\">10.1016/j.mejo.2008.07.056</a>.","bibtex":"@article{Panfilova_Pawlis_Arens_de Vasconcellos_Berth_Hüsch_Wiedemeier_Zrenner_Lischka_2008, title={Micro-Raman imaging and micro-photoluminescence measurements of strain in ZnMgSe/ZnSe microdiscs}, volume={40}, DOI={<a href=\"https://doi.org/10.1016/j.mejo.2008.07.056\">10.1016/j.mejo.2008.07.056</a>}, number={2}, journal={Microelectronics Journal}, publisher={Elsevier BV}, author={Panfilova, M. and Pawlis, A. and Arens, C. and de Vasconcellos, S. Michaelis and Berth, Gerhard and Hüsch, K.P. and Wiedemeier, V. and Zrenner, Artur and Lischka, K.}, year={2008}, pages={221–223} }","short":"M. Panfilova, A. Pawlis, C. Arens, S.M. de Vasconcellos, G. Berth, K.P. Hüsch, V. Wiedemeier, A. Zrenner, K. Lischka, Microelectronics Journal 40 (2008) 221–223.","apa":"Panfilova, M., Pawlis, A., Arens, C., de Vasconcellos, S. M., Berth, G., Hüsch, K. P., … Lischka, K. (2008). Micro-Raman imaging and micro-photoluminescence measurements of strain in ZnMgSe/ZnSe microdiscs. <i>Microelectronics Journal</i>, <i>40</i>(2), 221–223. <a href=\"https://doi.org/10.1016/j.mejo.2008.07.056\">https://doi.org/10.1016/j.mejo.2008.07.056</a>","chicago":"Panfilova, M., A. Pawlis, C. Arens, S. Michaelis de Vasconcellos, Gerhard Berth, K.P. Hüsch, V. Wiedemeier, Artur Zrenner, and K. Lischka. “Micro-Raman Imaging and Micro-Photoluminescence Measurements of Strain in ZnMgSe/ZnSe Microdiscs.” <i>Microelectronics Journal</i> 40, no. 2 (2008): 221–23. <a href=\"https://doi.org/10.1016/j.mejo.2008.07.056\">https://doi.org/10.1016/j.mejo.2008.07.056</a>.","ieee":"M. Panfilova <i>et al.</i>, “Micro-Raman imaging and micro-photoluminescence measurements of strain in ZnMgSe/ZnSe microdiscs,” <i>Microelectronics Journal</i>, vol. 40, no. 2, pp. 221–223, 2008.","ama":"Panfilova M, Pawlis A, Arens C, et al. Micro-Raman imaging and micro-photoluminescence measurements of strain in ZnMgSe/ZnSe microdiscs. <i>Microelectronics Journal</i>. 2008;40(2):221-223. doi:<a href=\"https://doi.org/10.1016/j.mejo.2008.07.056\">10.1016/j.mejo.2008.07.056</a>"},"keyword":["Raman","Photoluminescence","Microdisc","ZnSe"],"language":[{"iso":"eng"}],"publication":"Microelectronics Journal","abstract":[{"lang":"eng","text":"Semiconductor microdiscs are promising for applications in photonics and quantum-information processing, such as efficient solid-state-based single-photon emitters. Strain in the multilayer structure of those devices has an important influence on their optical properties. We present measurements of the strain distribution in ZnMgSe/ZnSe microdiscs by means of micro-photoluminescence and micro-Raman imaging. Photoluminescence measurements of microdiscs reveal substantially broadened emission lines with a shift to lower energy at the undercut part of microdiscs, indicating local relaxation in this area. The distribution of the strain in the microdiscs is obtained from an imaging micro-Raman analysis, revealing that the freestanding part of the microdiscs is free of defects."}],"publisher":"Elsevier BV","date_created":"2018-09-20T13:39:35Z","title":"Micro-Raman imaging and micro-photoluminescence measurements of strain in ZnMgSe/ZnSe microdiscs","issue":"2","year":"2008"}]