--- _id: '13232' author: - first_name: 'Naveen Kumar ' full_name: 'Kaliannan, Naveen Kumar ' last_name: Kaliannan - first_name: Andres full_name: Henao Aristizabal, Andres last_name: Henao Aristizabal - first_name: Hendrik full_name: Wiebeler, Hendrik last_name: Wiebeler - first_name: Frederik full_name: Zysk, Frederik last_name: Zysk - first_name: Tatsuhiko full_name: Ohto, Tatsuhiko last_name: Ohto - first_name: Yuki full_name: Nagata, Yuki last_name: Nagata - first_name: Thomas full_name: D. Kühne, Thomas last_name: D. Kühne citation: ama: Kaliannan NK, Henao Aristizabal A, Wiebeler H, et al. Impact of intermolecular vibrational coupling effects on the sum-frequency generation spectra of the water/air interface. Molecular Physics. 2019;0(0):1-10. doi:10.1080/00268976.2019.1620358 apa: Kaliannan, N. K., Henao Aristizabal, A., Wiebeler, H., Zysk, F., Ohto, T., Nagata, Y., & D. Kühne, T. (2019). Impact of intermolecular vibrational coupling effects on the sum-frequency generation spectra of the water/air interface. Molecular Physics, 0(0), 1–10. https://doi.org/10.1080/00268976.2019.1620358 bibtex: '@article{Kaliannan_Henao Aristizabal_Wiebeler_Zysk_Ohto_Nagata_D. Kühne_2019, title={Impact of intermolecular vibrational coupling effects on the sum-frequency generation spectra of the water/air interface}, volume={0}, DOI={10.1080/00268976.2019.1620358}, number={0}, journal={Molecular Physics}, publisher={Taylor & Francis}, author={Kaliannan, Naveen Kumar and Henao Aristizabal, Andres and Wiebeler, Hendrik and Zysk, Frederik and Ohto, Tatsuhiko and Nagata, Yuki and D. Kühne, Thomas}, year={2019}, pages={1–10} }' chicago: 'Kaliannan, Naveen Kumar , Andres Henao Aristizabal, Hendrik Wiebeler, Frederik Zysk, Tatsuhiko Ohto, Yuki Nagata, and Thomas D. Kühne. “Impact of Intermolecular Vibrational Coupling Effects on the Sum-Frequency Generation Spectra of the Water/Air Interface.” Molecular Physics 0, no. 0 (2019): 1–10. https://doi.org/10.1080/00268976.2019.1620358.' ieee: N. K. Kaliannan et al., “Impact of intermolecular vibrational coupling effects on the sum-frequency generation spectra of the water/air interface,” Molecular Physics, vol. 0, no. 0, pp. 1–10, 2019. mla: Kaliannan, Naveen Kumar, et al. “Impact of Intermolecular Vibrational Coupling Effects on the Sum-Frequency Generation Spectra of the Water/Air Interface.” Molecular Physics, vol. 0, no. 0, Taylor & Francis, 2019, pp. 1–10, doi:10.1080/00268976.2019.1620358. short: N.K. Kaliannan, A. Henao Aristizabal, H. Wiebeler, F. Zysk, T. Ohto, Y. Nagata, T. D. Kühne, Molecular Physics 0 (2019) 1–10. date_created: 2019-09-16T10:26:49Z date_updated: 2022-01-06T06:51:31Z department: - _id: '304' doi: 10.1080/00268976.2019.1620358 issue: '0' language: - iso: eng page: 1-10 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Molecular Physics publication_status: published publisher: Taylor & Francis status: public title: Impact of intermolecular vibrational coupling effects on the sum-frequency generation spectra of the water/air interface type: journal_article user_id: '71692' volume: '0' year: '2019' ... --- _id: '13233' author: - first_name: Patrick full_name: Müller, Patrick last_name: Müller - first_name: Adam full_name: Neuba, Adam last_name: Neuba - first_name: Ulrich full_name: Flörke, Ulrich last_name: Flörke - first_name: Gerald full_name: Henkel, Gerald last_name: Henkel - first_name: Thomas D. full_name: Kühne, Thomas D. last_name: Kühne - first_name: Matthias full_name: Bauer, Matthias last_name: Bauer citation: ama: Müller P, Neuba A, Flörke U, Henkel G, Kühne TD, Bauer M. Experimental and Theoretical High Energy Resolution Hard X-ray Absorption and Emission Spectroscopy on Biomimetic Cu2S2 Complexes. The Journal of Physical Chemistry A. 2019;123(16):3575-3581. doi:10.1021/acs.jpca.9b00463 apa: Müller, P., Neuba, A., Flörke, U., Henkel, G., Kühne, T. D., & Bauer, M. (2019). Experimental and Theoretical High Energy Resolution Hard X-ray Absorption and Emission Spectroscopy on Biomimetic Cu2S2 Complexes. The Journal of Physical Chemistry A, 123(16), 3575–3581. https://doi.org/10.1021/acs.jpca.9b00463 bibtex: '@article{Müller_Neuba_Flörke_Henkel_Kühne_Bauer_2019, title={Experimental and Theoretical High Energy Resolution Hard X-ray Absorption and Emission Spectroscopy on Biomimetic Cu2S2 Complexes}, volume={123}, DOI={10.1021/acs.jpca.9b00463}, number={16}, journal={The Journal of Physical Chemistry A}, author={Müller, Patrick and Neuba, Adam and Flörke, Ulrich and Henkel, Gerald and Kühne, Thomas D. and Bauer, Matthias}, year={2019}, pages={3575–3581} }' chicago: 'Müller, Patrick, Adam Neuba, Ulrich Flörke, Gerald Henkel, Thomas D. Kühne, and Matthias Bauer. “Experimental and Theoretical High Energy Resolution Hard X-Ray Absorption and Emission Spectroscopy on Biomimetic Cu2S2 Complexes.” The Journal of Physical Chemistry A 123, no. 16 (2019): 3575–81. https://doi.org/10.1021/acs.jpca.9b00463.' ieee: P. Müller, A. Neuba, U. Flörke, G. Henkel, T. D. Kühne, and M. Bauer, “Experimental and Theoretical High Energy Resolution Hard X-ray Absorption and Emission Spectroscopy on Biomimetic Cu2S2 Complexes,” The Journal of Physical Chemistry A, vol. 123, no. 16, pp. 3575–3581, 2019. mla: Müller, Patrick, et al. “Experimental and Theoretical High Energy Resolution Hard X-Ray Absorption and Emission Spectroscopy on Biomimetic Cu2S2 Complexes.” The Journal of Physical Chemistry A, vol. 123, no. 16, 2019, pp. 3575–81, doi:10.1021/acs.jpca.9b00463. short: P. Müller, A. Neuba, U. Flörke, G. Henkel, T.D. Kühne, M. Bauer, The Journal of Physical Chemistry A 123 (2019) 3575–3581. date_created: 2019-09-16T10:32:41Z date_updated: 2022-01-06T06:51:31Z department: - _id: '304' doi: 10.1021/acs.jpca.9b00463 intvolume: ' 123' issue: '16' language: - iso: eng page: 3575-3581 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: The Journal of Physical Chemistry A publication_status: published status: public title: Experimental and Theoretical High Energy Resolution Hard X-ray Absorption and Emission Spectroscopy on Biomimetic Cu2S2 Complexes type: journal_article user_id: '71692' volume: 123 year: '2019' ... --- _id: '13236' abstract: - lang: eng text: Thermal treatment of hexaazatriphenylene-hexacarbonitrile (HAT-CN) in the temperature range from 500 °C to 700 °C leads to precise control over the degree of condensation{,} and thus atomic construction and porosity of the resulting C2N-type materials. Depending on the condensation temperature of HAT-CN{,} nitrogen contents of more than 30 at% can be reached. In general{,} these carbons show adsorption properties which are comparable to those known for zeolites but their pore size can be adjusted over a wider range. At condensation temperatures of 525 °C and below{,} the uptake of nitrogen gas remains negligible due to size exclusion{,} but the internal pores are large and polarizing enough that CO2 can still adsorb on part of the internal surface. This leads to surprisingly high CO2 adsorption capacities and isosteric heat of adsorption of up to 52 kJ mol−1. Theoretical calculations show that this high binding enthalpy arises from collective stabilization effects from the nitrogen atoms in the C2N layers surrounding the carbon atom in the CO2 molecule and from the electron acceptor properties of the carbon atoms from C2N which are in close proximity to the oxygen atoms in CO2. A true CO2 molecular sieving effect is achieved for the first time in such a metal-free organic material with zeolite-like properties{,} showing an IAST CO2/N2 selectivity of up to 121 at 298 K and a N2/CO2 ratio of 90/10 without notable changes in the CO2 adsorption properities over 80 cycles. author: - first_name: Ralf full_name: Walczak, Ralf last_name: Walczak - first_name: Aleksandr full_name: Savateev, Aleksandr last_name: Savateev - first_name: Julian Joachim full_name: Heske, Julian Joachim id: '53238' last_name: Heske - first_name: Nadezda V. full_name: Tarakina, Nadezda V. last_name: Tarakina - first_name: Sudhir full_name: Sahoo, Sudhir last_name: Sahoo - first_name: Jan D. full_name: Epping, Jan D. last_name: Epping - first_name: Thomas full_name: Kühne, Thomas id: '49079' last_name: Kühne - first_name: Bogdan full_name: Kurpil, Bogdan last_name: Kurpil - first_name: Markus full_name: Antonietti, Markus last_name: Antonietti - first_name: Martin full_name: Oschatz, Martin last_name: Oschatz citation: ama: Walczak R, Savateev A, Heske JJ, et al. Controlling the strength of interaction between carbon dioxide and nitrogen-rich carbon materials by molecular design. Sustainable Energy Fuels. 2019. doi:10.1039/C9SE00486F apa: Walczak, R., Savateev, A., Heske, J. J., Tarakina, N. V., Sahoo, S., Epping, J. D., … Oschatz, M. (2019). Controlling the strength of interaction between carbon dioxide and nitrogen-rich carbon materials by molecular design. Sustainable Energy Fuels. https://doi.org/10.1039/C9SE00486F bibtex: '@article{Walczak_Savateev_Heske_Tarakina_Sahoo_Epping_Kühne_Kurpil_Antonietti_Oschatz_2019, title={Controlling the strength of interaction between carbon dioxide and nitrogen-rich carbon materials by molecular design}, DOI={10.1039/C9SE00486F}, journal={Sustainable Energy Fuels}, publisher={The Royal Society of Chemistry}, author={Walczak, Ralf and Savateev, Aleksandr and Heske, Julian Joachim and Tarakina, Nadezda V. and Sahoo, Sudhir and Epping, Jan D. and Kühne, Thomas and Kurpil, Bogdan and Antonietti, Markus and Oschatz, Martin}, year={2019} }' chicago: Walczak, Ralf, Aleksandr Savateev, Julian Joachim Heske, Nadezda V. Tarakina, Sudhir Sahoo, Jan D. Epping, Thomas Kühne, Bogdan Kurpil, Markus Antonietti, and Martin Oschatz. “Controlling the Strength of Interaction between Carbon Dioxide and Nitrogen-Rich Carbon Materials by Molecular Design.” Sustainable Energy Fuels, 2019. https://doi.org/10.1039/C9SE00486F. ieee: R. Walczak et al., “Controlling the strength of interaction between carbon dioxide and nitrogen-rich carbon materials by molecular design,” Sustainable Energy Fuels, 2019. mla: Walczak, Ralf, et al. “Controlling the Strength of Interaction between Carbon Dioxide and Nitrogen-Rich Carbon Materials by Molecular Design.” Sustainable Energy Fuels, The Royal Society of Chemistry, 2019, doi:10.1039/C9SE00486F. short: R. Walczak, A. Savateev, J.J. Heske, N.V. Tarakina, S. Sahoo, J.D. Epping, T. Kühne, B. Kurpil, M. Antonietti, M. Oschatz, Sustainable Energy Fuels (2019). date_created: 2019-09-16T10:39:25Z date_updated: 2022-01-06T06:51:31Z department: - _id: '304' doi: 10.1039/C9SE00486F language: - iso: eng page: '-' project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Sustainable Energy Fuels publication_status: published publisher: The Royal Society of Chemistry status: public title: Controlling the strength of interaction between carbon dioxide and nitrogen-rich carbon materials by molecular design type: journal_article user_id: '71692' year: '2019' ... --- _id: '13237' author: - first_name: Hossam full_name: Elgabarty, Hossam last_name: Elgabarty - first_name: Naveen Kumar full_name: Kaliannan, Naveen Kumar last_name: Kaliannan - first_name: Thomas D. full_name: Kühne, Thomas D. last_name: Kühne citation: ama: Elgabarty H, Kaliannan NK, Kühne TD. Enhancement of the asymmetry in the hydrogen bond network of liquid water by an ultrafast electric field pulse. Scientific Reports. 2019;9:10002. doi:10.1038/s41598-019-46449-5 apa: Elgabarty, H., Kaliannan, N. K., & Kühne, T. D. (2019). Enhancement of the asymmetry in the hydrogen bond network of liquid water by an ultrafast electric field pulse. Scientific Reports, 9, 10002. https://doi.org/10.1038/s41598-019-46449-5 bibtex: '@article{Elgabarty_Kaliannan_Kühne_2019, title={Enhancement of the asymmetry in the hydrogen bond network of liquid water by an ultrafast electric field pulse}, volume={9}, DOI={10.1038/s41598-019-46449-5}, journal={Scientific Reports}, author={Elgabarty, Hossam and Kaliannan, Naveen Kumar and Kühne, Thomas D.}, year={2019}, pages={10002} }' chicago: 'Elgabarty, Hossam, Naveen Kumar Kaliannan, and Thomas D. Kühne. “Enhancement of the Asymmetry in the Hydrogen Bond Network of Liquid Water by an Ultrafast Electric Field Pulse.” Scientific Reports 9 (2019): 10002. https://doi.org/10.1038/s41598-019-46449-5.' ieee: H. Elgabarty, N. K. Kaliannan, and T. D. Kühne, “Enhancement of the asymmetry in the hydrogen bond network of liquid water by an ultrafast electric field pulse,” Scientific Reports, vol. 9, p. 10002, 2019. mla: Elgabarty, Hossam, et al. “Enhancement of the Asymmetry in the Hydrogen Bond Network of Liquid Water by an Ultrafast Electric Field Pulse.” Scientific Reports, vol. 9, 2019, p. 10002, doi:10.1038/s41598-019-46449-5. short: H. Elgabarty, N.K. Kaliannan, T.D. Kühne, Scientific Reports 9 (2019) 10002. date_created: 2019-09-16T10:48:03Z date_updated: 2022-01-06T06:51:31Z department: - _id: '304' doi: 10.1038/s41598-019-46449-5 language: - iso: eng page: '10002' project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Scientific Reports publication_status: published status: public title: Enhancement of the asymmetry in the hydrogen bond network of liquid water by an ultrafast electric field pulse type: journal_article user_id: '71692' volume: ' 9' year: '2019' ... --- _id: '13230' abstract: - lang: eng text: The behavior of alkali atom point defects in polycrystalline CuInSe2 is studied. In this work, three grain boundary models, one coherent twin boundary and two twin boundaries with dislocation cores, are considered. Total energy calculations show that all alkali metals tend to segregate at the grain boundaries. In addition, the segregation of alkali atoms is more pronounced at the grain boundaries with the dislocation cores. The diffusion of alkali metals along and near grain boundaries is studied as well. The results show that the diffusion of alkali atoms in the grain boundary models is faster than within the bulk. In addition, the ion exchange between Na and Rb atoms at the grain boundaries leads to the Rb enrichment at the grain boundaries and the increase of the Na concentration in the bulk. While the effects of Na and Rb point defects on the electronic structure of the grain boundary with the anion-core dislocation are similar, Rb atoms passivate the grain boundary with the cation-core dislocation more effectively than Na. This can explain the further improvement of the solar cell performance after the RbF-postdeposition treatment. article_type: original author: - first_name: Manjusha full_name: ' Chugh, Manjusha' last_name: ' Chugh' - first_name: ' Thomas D.' full_name: Kühne, Thomas D. last_name: Kühne - first_name: Hossein full_name: Mirhosseini, Hossein id: '71051' last_name: Mirhosseini orcid: https://orcid.org/0000-0001-6179-1545 citation: ama: Chugh M, Kühne Thomas D., Mirhosseini H. Diffusion of Alkali Metals in Polycrystalline CuInSe2 and Their Role in the Passivation of Grain Boundaries. ACS Applied Materials & Interfaces. 2019;11(16):14821−14829. doi:10.1021/acsami.9b02158 apa: Chugh, M., Kühne, Thomas D., & Mirhosseini, H. (2019). Diffusion of Alkali Metals in Polycrystalline CuInSe2 and Their Role in the Passivation of Grain Boundaries. ACS Applied Materials & Interfaces, 11(16), 14821−14829. https://doi.org/10.1021/acsami.9b02158 bibtex: '@article{ Chugh_Kühne_Mirhosseini_2019, title={Diffusion of Alkali Metals in Polycrystalline CuInSe2 and Their Role in the Passivation of Grain Boundaries}, volume={11}, DOI={10.1021/acsami.9b02158}, number={16}, journal={ACS Applied Materials & Interfaces}, publisher={American Chemical Society}, author={ Chugh, Manjusha and Kühne, Thomas D. and Mirhosseini, Hossein}, year={2019}, pages={14821−14829} }' chicago: 'Chugh, Manjusha, Thomas D. Kühne, and Hossein Mirhosseini. “Diffusion of Alkali Metals in Polycrystalline CuInSe2 and Their Role in the Passivation of Grain Boundaries.” ACS Applied Materials & Interfaces 11, no. 16 (2019): 14821−14829. https://doi.org/10.1021/acsami.9b02158.' ieee: 'M. Chugh, Thomas D. Kühne, and H. Mirhosseini, “Diffusion of Alkali Metals in Polycrystalline CuInSe2 and Their Role in the Passivation of Grain Boundaries,” ACS Applied Materials & Interfaces, vol. 11, no. 16, p. 14821−14829, 2019, doi: 10.1021/acsami.9b02158.' mla: Chugh, Manjusha, et al. “Diffusion of Alkali Metals in Polycrystalline CuInSe2 and Their Role in the Passivation of Grain Boundaries.” ACS Applied Materials & Interfaces, vol. 11, no. 16, American Chemical Society, 2019, p. 14821−14829, doi:10.1021/acsami.9b02158. short: M. Chugh, Thomas D. Kühne, H. Mirhosseini, ACS Applied Materials & Interfaces 11 (2019) 14821−14829. date_created: 2019-09-16T10:18:18Z date_updated: 2022-07-21T09:45:19Z department: - _id: '304' doi: 10.1021/acsami.9b02158 intvolume: ' 11' issue: '16' language: - iso: eng page: 14821−14829 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: ACS Applied Materials & Interfaces publication_status: published publisher: American Chemical Society status: public title: Diffusion of Alkali Metals in Polycrystalline CuInSe2 and Their Role in the Passivation of Grain Boundaries type: journal_article user_id: '71051' volume: 11 year: '2019' ... --- _id: '21' abstract: - lang: eng text: "We address the general mathematical problem of computing the inverse p-th\r\nroot of a given matrix in an efficient way. A new method to construct iteration\r\nfunctions that allow calculating arbitrary p-th roots and their inverses of\r\nsymmetric positive definite matrices is presented. We show that the order of\r\nconvergence is at least quadratic and that adaptively adjusting a parameter q\r\nalways leads to an even faster convergence. In this way, a better performance\r\nthan with previously known iteration schemes is achieved. The efficiency of the\r\niterative functions is demonstrated for various matrices with different\r\ndensities, condition numbers and spectral radii." author: - first_name: Dorothee full_name: Richters, Dorothee last_name: Richters - first_name: Michael full_name: Lass, Michael id: '24135' last_name: Lass orcid: 0000-0002-5708-7632 - first_name: Andrea full_name: Walther, Andrea last_name: Walther - first_name: Christian full_name: Plessl, Christian id: '16153' last_name: Plessl orcid: 0000-0001-5728-9982 - first_name: Thomas full_name: Kühne, Thomas id: '49079' last_name: Kühne citation: ama: Richters D, Lass M, Walther A, Plessl C, Kühne T. A General Algorithm to Calculate the Inverse Principal p-th Root of Symmetric Positive Definite Matrices. Communications in Computational Physics. 2019;25(2):564-585. doi:10.4208/cicp.OA-2018-0053 apa: Richters, D., Lass, M., Walther, A., Plessl, C., & Kühne, T. (2019). A General Algorithm to Calculate the Inverse Principal p-th Root of Symmetric Positive Definite Matrices. Communications in Computational Physics, 25(2), 564–585. https://doi.org/10.4208/cicp.OA-2018-0053 bibtex: '@article{Richters_Lass_Walther_Plessl_Kühne_2019, title={A General Algorithm to Calculate the Inverse Principal p-th Root of Symmetric Positive Definite Matrices}, volume={25}, DOI={10.4208/cicp.OA-2018-0053}, number={2}, journal={Communications in Computational Physics}, publisher={Global Science Press}, author={Richters, Dorothee and Lass, Michael and Walther, Andrea and Plessl, Christian and Kühne, Thomas}, year={2019}, pages={564–585} }' chicago: 'Richters, Dorothee, Michael Lass, Andrea Walther, Christian Plessl, and Thomas Kühne. “A General Algorithm to Calculate the Inverse Principal P-Th Root of Symmetric Positive Definite Matrices.” Communications in Computational Physics 25, no. 2 (2019): 564–85. https://doi.org/10.4208/cicp.OA-2018-0053.' ieee: 'D. Richters, M. Lass, A. Walther, C. Plessl, and T. Kühne, “A General Algorithm to Calculate the Inverse Principal p-th Root of Symmetric Positive Definite Matrices,” Communications in Computational Physics, vol. 25, no. 2, pp. 564–585, 2019, doi: 10.4208/cicp.OA-2018-0053.' mla: Richters, Dorothee, et al. “A General Algorithm to Calculate the Inverse Principal P-Th Root of Symmetric Positive Definite Matrices.” Communications in Computational Physics, vol. 25, no. 2, Global Science Press, 2019, pp. 564–85, doi:10.4208/cicp.OA-2018-0053. short: D. Richters, M. Lass, A. Walther, C. Plessl, T. Kühne, Communications in Computational Physics 25 (2019) 564–585. date_created: 2017-07-25T14:48:26Z date_updated: 2023-09-26T11:45:02Z department: - _id: '27' - _id: '518' - _id: '304' - _id: '104' doi: 10.4208/cicp.OA-2018-0053 external_id: arxiv: - '1703.02456' intvolume: ' 25' issue: '2' language: - iso: eng page: 564-585 project: - _id: '32' grant_number: PL 595/2-1 / 320898746 name: Performance and Efficiency in HPC with Custom Computing - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Communications in Computational Physics publisher: Global Science Press quality_controlled: '1' status: public title: A General Algorithm to Calculate the Inverse Principal p-th Root of Symmetric Positive Definite Matrices type: journal_article user_id: '15278' volume: 25 year: '2019' ... --- _id: '20' abstract: - lang: eng text: "Approximate computing has shown to provide new ways to improve performance\r\nand power consumption of error-resilient applications. While many of these\r\napplications can be found in image processing, data classification or machine\r\nlearning, we demonstrate its suitability to a problem from scientific\r\ncomputing. Utilizing the self-correcting behavior of iterative algorithms, we\r\nshow that approximate computing can be applied to the calculation of inverse\r\nmatrix p-th roots which are required in many applications in scientific\r\ncomputing. Results show great opportunities to reduce the computational effort\r\nand bandwidth required for the execution of the discussed algorithm, especially\r\nwhen targeting special accelerator hardware." author: - first_name: Michael full_name: Lass, Michael id: '24135' last_name: Lass orcid: 0000-0002-5708-7632 - first_name: Thomas full_name: Kühne, Thomas id: '49079' last_name: Kühne - first_name: Christian full_name: Plessl, Christian id: '16153' last_name: Plessl orcid: 0000-0001-5728-9982 citation: ama: Lass M, Kühne T, Plessl C. Using Approximate Computing for the Calculation of Inverse Matrix p-th Roots. Embedded Systems Letters. 2018;10(2):33-36. doi:10.1109/LES.2017.2760923 apa: Lass, M., Kühne, T., & Plessl, C. (2018). Using Approximate Computing for the Calculation of Inverse Matrix p-th Roots. Embedded Systems Letters, 10(2), 33–36. https://doi.org/10.1109/LES.2017.2760923 bibtex: '@article{Lass_Kühne_Plessl_2018, title={Using Approximate Computing for the Calculation of Inverse Matrix p-th Roots}, volume={10}, DOI={10.1109/LES.2017.2760923}, number={2}, journal={Embedded Systems Letters}, publisher={IEEE}, author={Lass, Michael and Kühne, Thomas and Plessl, Christian}, year={2018}, pages={33–36} }' chicago: 'Lass, Michael, Thomas Kühne, and Christian Plessl. “Using Approximate Computing for the Calculation of Inverse Matrix P-Th Roots.” Embedded Systems Letters 10, no. 2 (2018): 33–36. https://doi.org/10.1109/LES.2017.2760923.' ieee: M. Lass, T. Kühne, and C. Plessl, “Using Approximate Computing for the Calculation of Inverse Matrix p-th Roots,” Embedded Systems Letters, vol. 10, no. 2, pp. 33–36, 2018. mla: Lass, Michael, et al. “Using Approximate Computing for the Calculation of Inverse Matrix P-Th Roots.” Embedded Systems Letters, vol. 10, no. 2, IEEE, 2018, pp. 33–36, doi:10.1109/LES.2017.2760923. short: M. Lass, T. Kühne, C. Plessl, Embedded Systems Letters 10 (2018) 33–36. date_created: 2017-07-25T14:41:08Z date_updated: 2022-01-06T06:54:18Z department: - _id: '27' - _id: '518' - _id: '304' doi: 10.1109/LES.2017.2760923 external_id: arxiv: - '1703.02283' intvolume: ' 10' issue: '2' language: - iso: eng page: ' 33-36' project: - _id: '32' grant_number: PL 595/2-1 name: Performance and Efficiency in HPC with Custom Computing - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Embedded Systems Letters publication_identifier: eissn: - 1943-0671 issn: - 1943-0663 publication_status: published publisher: IEEE status: public title: Using Approximate Computing for the Calculation of Inverse Matrix p-th Roots type: journal_article user_id: '16153' volume: 10 year: '2018' ... --- _id: '13209' abstract: - lang: eng text: We performed ab initio calculations to study oxygen and hydrogen point defects in the CuInSe2 (CISe) solar-cell material. We found that H interstitial defects (when one H atom is surrounded by four Se atoms) and HCu (when a H atom is replacing a Cu atom) are the most stable defects. Whereas these H substitutional defects remain neutral, H interstitial defects act as donor defects and are detrimental to the cell performance. The incorporation of H2 into the CISe lattice, on the other hand, is harmless to the p-type conductivity. Oxygen atoms tend to either substitute Se atoms in the CISe lattice or form interstitial defects, though the formation of substitutional defects is more favorable. All oxygen point defects have high formation energies, which results in a low concentration of these defects in CISe. However, the presence of oxygen in the system leads to the formation of secondary phases such as In2O3 and InCuO2. In addition to the point defects, we studied the adsorption of H2O molecules on a defect-free surface and a surface with a (2VCu + InCu) defect using the ab initio thermodynamics technique. Our results indicate that the dissociative water adsorption on the CISe surface is energetically unfavorable. Furthermore, in order to obtain a water-free surface, the surface with defects has to be calcined at a higher temperature compared to the defect-free surface. author: - first_name: Sudhir full_name: Sahoo, Sudhir last_name: Sahoo - first_name: Ramya full_name: Kormath Madam Raghupathy, Ramya id: '71692' last_name: Kormath Madam Raghupathy orcid: https://orcid.org/0000-0003-4667-9744 - first_name: Thomas full_name: Kühne, Thomas id: '49079' last_name: Kühne - first_name: Hossein full_name: Mirhosseini, Hossein id: '71051' last_name: Mirhosseini orcid: https://orcid.org/0000-0001-6179-1545 citation: ama: Sahoo S, Kormath Madam Raghupathy R, Kühne T, Mirhosseini H. Theoretical Investigation of Interaction of CuInSe2 Absorber Material with Oxygen, Hydrogen, and Water. J Phys Chem C. 2018;122(37):21202-21209. doi:10.1021/acs.jpcc.8b06709 apa: Sahoo, S., Kormath Madam Raghupathy, R., Kühne, T., & Mirhosseini, H. (2018). Theoretical Investigation of Interaction of CuInSe2 Absorber Material with Oxygen, Hydrogen, and Water. J. Phys. Chem. C, 122(37), 21202–21209. https://doi.org/10.1021/acs.jpcc.8b06709 bibtex: '@article{Sahoo_Kormath Madam Raghupathy_Kühne_Mirhosseini_2018, title={Theoretical Investigation of Interaction of CuInSe2 Absorber Material with Oxygen, Hydrogen, and Water}, volume={122}, DOI={10.1021/acs.jpcc.8b06709}, number={37}, journal={J. Phys. Chem. C}, author={Sahoo, Sudhir and Kormath Madam Raghupathy, Ramya and Kühne, Thomas and Mirhosseini, Hossein}, year={2018}, pages={21202–21209} }' chicago: 'Sahoo, Sudhir, Ramya Kormath Madam Raghupathy, Thomas Kühne, and Hossein Mirhosseini. “Theoretical Investigation of Interaction of CuInSe2 Absorber Material with Oxygen, Hydrogen, and Water.” J. Phys. Chem. C 122, no. 37 (2018): 21202–9. https://doi.org/10.1021/acs.jpcc.8b06709.' ieee: 'S. Sahoo, R. Kormath Madam Raghupathy, T. Kühne, and H. Mirhosseini, “Theoretical Investigation of Interaction of CuInSe2 Absorber Material with Oxygen, Hydrogen, and Water,” J. Phys. Chem. C, vol. 122, no. 37, pp. 21202–21209, 2018, doi: 10.1021/acs.jpcc.8b06709.' mla: Sahoo, Sudhir, et al. “Theoretical Investigation of Interaction of CuInSe2 Absorber Material with Oxygen, Hydrogen, and Water.” J. Phys. Chem. C, vol. 122, no. 37, 2018, pp. 21202–09, doi:10.1021/acs.jpcc.8b06709. short: S. Sahoo, R. Kormath Madam Raghupathy, T. Kühne, H. Mirhosseini, J. Phys. Chem. C 122 (2018) 21202–21209. date_created: 2019-09-13T12:53:01Z date_updated: 2022-07-21T09:43:25Z department: - _id: '304' doi: 10.1021/acs.jpcc.8b06709 intvolume: ' 122' issue: '37' language: - iso: eng page: 21202-21209 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: J. Phys. Chem. C publication_status: published status: public title: Theoretical Investigation of Interaction of CuInSe2 Absorber Material with Oxygen, Hydrogen, and Water type: journal_article user_id: '71051' volume: 122 year: '2018' ... --- _id: '13210' abstract: - lang: eng text: In this work, we investigated ternary chalcogenide semiconductors to identify promising p-type transparent conducting materials (TCMs). High-throughput calculations were employed to find the compounds that satisfies our screening criteria. Our screening strategy was based on the size of band gaps, the values of hole effective masses, and p-type dopability. Our search led to the identification of seven promising compounds (IrSbS, Ba2GeSe4, Ba2SiSe4, Ba(BSe3)2, VCu3S4, NbCu3Se4, and CuBS2) as potential TCM candidates. In addition, branch point energy and optical absorption spectra calculations support our findings. Our results open a new direction for the design and development of p-type TCMs. author: - first_name: Ramya full_name: Kormath Madam Raghupathy, Ramya id: '71692' last_name: Kormath Madam Raghupathy orcid: https://orcid.org/0000-0003-4667-9744 - first_name: Hendrik full_name: Wiebeler, Hendrik last_name: Wiebeler - first_name: Thomas full_name: Kühne, Thomas id: '49079' last_name: Kühne - first_name: Claudia full_name: Felser, Claudia last_name: Felser - first_name: Hossein full_name: Mirhosseini, Hossein id: '71051' last_name: Mirhosseini orcid: https://orcid.org/0000-0001-6179-1545 citation: ama: Kormath Madam Raghupathy R, Wiebeler H, Kühne T, Felser C, Mirhosseini H. Database screening of ternary chalcogenides for p-type transparent conductors. Chemistry of Materials. 2018;30(19):6794-6800. doi:10.1021/acs.chemmater.8b02719 apa: Kormath Madam Raghupathy, R., Wiebeler, H., Kühne, T., Felser, C., & Mirhosseini, H. (2018). Database screening of ternary chalcogenides for p-type transparent conductors. Chemistry of Materials, 30(19), 6794–6800. https://doi.org/10.1021/acs.chemmater.8b02719 bibtex: '@article{Kormath Madam Raghupathy_Wiebeler_Kühne_Felser_Mirhosseini_2018, title={Database screening of ternary chalcogenides for p-type transparent conductors}, volume={30}, DOI={10.1021/acs.chemmater.8b02719}, number={19}, journal={Chemistry of Materials}, publisher={American Chemical Society}, author={Kormath Madam Raghupathy, Ramya and Wiebeler, Hendrik and Kühne, Thomas and Felser, Claudia and Mirhosseini, Hossein}, year={2018}, pages={6794–6800} }' chicago: 'Kormath Madam Raghupathy, Ramya, Hendrik Wiebeler, Thomas Kühne, Claudia Felser, and Hossein Mirhosseini. “Database Screening of Ternary Chalcogenides for P-Type Transparent Conductors.” Chemistry of Materials 30, no. 19 (2018): 6794–6800. https://doi.org/10.1021/acs.chemmater.8b02719.' ieee: 'R. Kormath Madam Raghupathy, H. Wiebeler, T. Kühne, C. Felser, and H. Mirhosseini, “Database screening of ternary chalcogenides for p-type transparent conductors,” Chemistry of Materials, vol. 30, no. 19, pp. 6794–6800, 2018, doi: 10.1021/acs.chemmater.8b02719.' mla: Kormath Madam Raghupathy, Ramya, et al. “Database Screening of Ternary Chalcogenides for P-Type Transparent Conductors.” Chemistry of Materials, vol. 30, no. 19, American Chemical Society, 2018, pp. 6794–800, doi:10.1021/acs.chemmater.8b02719. short: R. Kormath Madam Raghupathy, H. Wiebeler, T. Kühne, C. Felser, H. Mirhosseini, Chemistry of Materials 30 (2018) 6794–6800. date_created: 2019-09-13T12:53:02Z date_updated: 2022-07-21T09:42:32Z department: - _id: '304' doi: 10.1021/acs.chemmater.8b02719 intvolume: ' 30' issue: '19' language: - iso: eng page: 6794-6800 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Chemistry of Materials publication_status: published publisher: American Chemical Society status: public title: Database screening of ternary chalcogenides for p-type transparent conductors type: journal_article user_id: '71051' volume: 30 year: '2018' ... --- _id: '13405' author: - first_name: Patrick full_name: Müller, Patrick last_name: Müller - first_name: Kristof full_name: Karhan, Kristof last_name: Karhan - first_name: Matthias full_name: Krack, Matthias last_name: Krack - first_name: Uwe full_name: Gerstmann, Uwe id: '171' last_name: Gerstmann orcid: 0000-0002-4476-223X - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: Matthias full_name: Bauer, Matthias last_name: Bauer - first_name: Thomas D. full_name: Kühne, Thomas D. last_name: Kühne citation: ama: Müller P, Karhan K, Krack M, et al. Impact of finite-temperature and condensed-phase effects on theoretical X-ray absorption spectra of transition metal complexes. Journal of Computational Chemistry. Published online 2018:712-716. doi:10.1002/jcc.25641 apa: Müller, P., Karhan, K., Krack, M., Gerstmann, U., Schmidt, W. G., Bauer, M., & Kühne, T. D. (2018). Impact of finite-temperature and condensed-phase effects on theoretical X-ray absorption spectra of transition metal complexes. Journal of Computational Chemistry, 712–716. https://doi.org/10.1002/jcc.25641 bibtex: '@article{Müller_Karhan_Krack_Gerstmann_Schmidt_Bauer_Kühne_2018, title={Impact of finite-temperature and condensed-phase effects on theoretical X-ray absorption spectra of transition metal complexes}, DOI={10.1002/jcc.25641}, journal={Journal of Computational Chemistry}, author={Müller, Patrick and Karhan, Kristof and Krack, Matthias and Gerstmann, Uwe and Schmidt, Wolf Gero and Bauer, Matthias and Kühne, Thomas D.}, year={2018}, pages={712–716} }' chicago: Müller, Patrick, Kristof Karhan, Matthias Krack, Uwe Gerstmann, Wolf Gero Schmidt, Matthias Bauer, and Thomas D. Kühne. “Impact of Finite-Temperature and Condensed-Phase Effects on Theoretical X-Ray Absorption Spectra of Transition Metal Complexes.” Journal of Computational Chemistry, 2018, 712–16. https://doi.org/10.1002/jcc.25641. ieee: 'P. Müller et al., “Impact of finite-temperature and condensed-phase effects on theoretical X-ray absorption spectra of transition metal complexes,” Journal of Computational Chemistry, pp. 712–716, 2018, doi: 10.1002/jcc.25641.' mla: Müller, Patrick, et al. “Impact of Finite-Temperature and Condensed-Phase Effects on Theoretical X-Ray Absorption Spectra of Transition Metal Complexes.” Journal of Computational Chemistry, 2018, pp. 712–16, doi:10.1002/jcc.25641. short: P. Müller, K. Karhan, M. Krack, U. Gerstmann, W.G. Schmidt, M. Bauer, T.D. Kühne, Journal of Computational Chemistry (2018) 712–716. date_created: 2019-09-20T10:59:43Z date_updated: 2023-04-20T14:24:11Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '2' - _id: '306' - _id: '304' - _id: '35' doi: 10.1002/jcc.25641 language: - iso: eng page: 712-716 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Journal of Computational Chemistry publication_identifier: issn: - 0192-8651 publication_status: published status: public title: Impact of finite-temperature and condensed-phase effects on theoretical X-ray absorption spectra of transition metal complexes type: journal_article user_id: '16199' year: '2018' ...