Conductance Model for Single-Crystalline/Compact Metal Oxide Gas Sensing Layers in the Non-Degenerate Limit: Example of Epitaxial SnO$_2$(101)
| العنوان: | Conductance Model for Single-Crystalline/Compact Metal Oxide Gas Sensing Layers in the Non-Degenerate Limit: Example of Epitaxial SnO$_2$(101) |
|---|---|
| المؤلفون: | Udo Weimar, Oliver Bierwagen, Nicolae Barsan, Federico Schipani, Alexandru Oprea, Adelina Stanoiu, Cristian E. Simion, Melanie Budde, Alexandra Papadogianni |
| المصدر: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| بيانات النشر: | arXiv, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Explosive material, Ciencias Físicas, Otras Ingeniería de los Materiales, Oxide, FOS: Physical sciences, Bioengineering, Single-crystalline, 02 engineering and technology, INGENIERÍAS Y TECNOLOGÍAS, Epitaxy, Conduction model, 01 natural sciences, Metal, purl.org/becyt/ford/1 [https], chemistry.chemical_compound, Ingeniería de los Materiales, Limit (mathematics), Compact layers, Instrumentation, Epitaxial SnO2, Fluid Flow and Transfer Processes, Condensed Matter - Materials Science, business.industry, Process Chemistry and Technology, 010401 analytical chemistry, Conductance, Materials Science (cond-mat.mtrl-sci), purl.org/becyt/ford/1.3 [https], 021001 nanoscience & nanotechnology, Toxic gas, 0104 chemical sciences, chemistry, purl.org/becyt/ford/2 [https], SMOX, visual_art, visual_art.visual_art_medium, Optoelectronics, 0210 nano-technology, business, purl.org/becyt/ford/2.5 [https], Gas sensor, CIENCIAS NATURALES Y EXACTAS, Física de los Materiales Condensados |
| الوصف: | Semiconducting metal oxide (SMOX)-based gas sensors are indispensable for safety and health applications, for example, explosive, toxic gas alarms, controls for intake into car cabins, and monitor for industrial processes. In the past, the sensor community has been studying polycrystalline materials as sensors where the porous and random microstructure of the SMOX does not allow a separation of the phenomena involved in the sensing process. This led to conduction models that can model and predict the behavior of the overall response, but they were not capable of giving fundamental information regarding the basic mechanisms taking place. The study of epitaxial layers is a definite improvement, allowing clarifying the different aspects and contributions of the sensing mechanisms. A detailed analytical model of the transduction function for n-A nd p-type single-crystalline/compact metal oxide gas sensors was developed that directly relates the conductance of the sample with changes in the surface electrostatic potential. Combined dc resistance and work function measurements were used in a compact SnO2(101) layer in operando conditions that allowed us to check the validity of our model in the region where Boltzmann approximation holds to determine the surface and bulk properties of the material. Fil: Simion, Cristian Eugen. Institut de Physique Des Matériaux, Bucarest-magurele; Rumania Fil: Schipani, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Papadogianni, Alexandra. Paul Drude Institut Fur Festkorperelektronik; Alemania Fil: Stanoiu, Adelina. Institut de Physique Des Matériaux, Bucarest-magurele; Rumania Fil: Budde, Melanie. Paul Drude Institut Fur Festkorperelektronik; Alemania Fil: Oprea, Alexandru. Universität Tübingen; Alemania Fil: Weimar, Udo. Universität Tübingen; Alemania Fil: Bierwagen, Oliver. Paul Drude Institut Fur Festkorperelektronik; Alemania Fil: Barsan, Nicolae. Universität Tübingen; Alemania |
| وصف الملف: | application/pdf |
| DOI: | 10.48550/arxiv.2010.02962 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab010ee8071741c04dd19256eae82412 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....ab010ee8071741c04dd19256eae82412 |
| قاعدة البيانات: | OpenAIRE |
| DOI: | 10.48550/arxiv.2010.02962 |
|---|