Light-activated resistive ozone sensing at room temperature utilizing nanoporous In2O3 particles: Influence of particle size
D. Klaus, D. Klawinski, S. Amrehn, M. Tiemann, T. Wagner, Sensors and Actuators B: Chemical (2015) 181–185.
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Journal Article
| Published
| English
Author
Klaus, Dominik;
Klawinski, Danielle;
Amrehn, Sabrina;
Tiemann, MichaelLibreCat 
;
Wagner, Thorsten
;
Wagner, ThorstenDepartment
Abstract
Ordered mesoporous In2O3 particles of variable size synthesized by the nanocasting method are used for preparation of resistive gas-sensing layers. Light activation by a LED (blue light, 460 nm) permits room-temperature ozone sensing. Apart from differences in base-line resistance in sensing layers containing small (diameter approx. 170 nm) or large particles (approx. 870 nm), differences in the response amplitude and response time constant are also observed. Signal stabilization is achieved faster for small particles. In addition, sensors show a particle size-dependent reaction threshold for low ozone concentration. Larger particles show negligible response to 50 ppb ozone whereas a significant response is observed for the small-particle sensors. A simple model based on geometrical properties and formation of depletion layers explaining the observed behavior is presented.
Publishing Year
Journal Title
Sensors and Actuators B: Chemical
Page
181-185
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LibreCat-ID
Cite this
Klaus D, Klawinski D, Amrehn S, Tiemann M, Wagner T. Light-activated resistive ozone sensing at room temperature utilizing nanoporous In2O3 particles: Influence of particle size. Sensors and Actuators B: Chemical. Published online 2015:181-185. doi:10.1016/j.snb.2014.09.021
Klaus, D., Klawinski, D., Amrehn, S., Tiemann, M., & Wagner, T. (2015). Light-activated resistive ozone sensing at room temperature utilizing nanoporous In2O3 particles: Influence of particle size. Sensors and Actuators B: Chemical, 181–185. https://doi.org/10.1016/j.snb.2014.09.021
@article{Klaus_Klawinski_Amrehn_Tiemann_Wagner_2015, title={Light-activated resistive ozone sensing at room temperature utilizing nanoporous In2O3 particles: Influence of particle size}, DOI={10.1016/j.snb.2014.09.021}, journal={Sensors and Actuators B: Chemical}, author={Klaus, Dominik and Klawinski, Danielle and Amrehn, Sabrina and Tiemann, Michael and Wagner, Thorsten}, year={2015}, pages={181–185} }
Klaus, Dominik, Danielle Klawinski, Sabrina Amrehn, Michael Tiemann, and Thorsten Wagner. “Light-Activated Resistive Ozone Sensing at Room Temperature Utilizing Nanoporous In2O3 Particles: Influence of Particle Size.” Sensors and Actuators B: Chemical, 2015, 181–85. https://doi.org/10.1016/j.snb.2014.09.021.
D. Klaus, D. Klawinski, S. Amrehn, M. Tiemann, and T. Wagner, “Light-activated resistive ozone sensing at room temperature utilizing nanoporous In2O3 particles: Influence of particle size,” Sensors and Actuators B: Chemical, pp. 181–185, 2015, doi: 10.1016/j.snb.2014.09.021.
Klaus, Dominik, et al. “Light-Activated Resistive Ozone Sensing at Room Temperature Utilizing Nanoporous In2O3 Particles: Influence of Particle Size.” Sensors and Actuators B: Chemical, 2015, pp. 181–85, doi:10.1016/j.snb.2014.09.021.
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