Изучение адсорбционных состояний в керамике ZnO–Ag методом ТВЭ-кривых
The ZnO–Ag ceramic system as the material for semiconductor sensors of ethanol vapors was proposed quite a long time ago. The main goal of this work was to study surface electron states of this system and their relation with the electric properties of the material. The quantity of doping with Ag2O w...
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| Date: | 2013 |
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| Main Author: | |
| Format: | Article |
| Language: | Ukrainian |
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PE "Politekhperiodika", Book and Journal Publishers
2013
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| Online Access: | https://www.tkea.com.ua/index.php/journal/article/view/TKEA2013.6.46 |
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| Journal Title: | Technology and design in electronic equipment |
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Technology and design in electronic equipment| _version_ | 1856543829142798336 |
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| author | Lyashkov, A. Yu. |
| author_facet | Lyashkov, A. Yu. |
| author_sort | Lyashkov, A. Yu. |
| baseUrl_str | |
| collection | OJS |
| datestamp_date | 2025-05-30T19:35:01Z |
| description | The ZnO–Ag ceramic system as the material for semiconductor sensors of ethanol vapors was proposed quite a long time ago. The main goal of this work was to study surface electron states of this system and their relation with the electric properties of the material. The quantity of doping with Ag2O was changed in the range of 0.1–2.0% of mass. The increase of the Ag doping leads to a shift of the Fermi level down (closer to the valence zone). The paper presents research results on electrical properties of ZnO–Ag ceramics using the method of thermal vacuum curves of electrical conductivity. Changes in the electrical properties during heating in vacuum in the temperature range of 300–800 K were obtained and discussed. The increase of Tvac leads to removal of oxygen from the surface of samples The oxygen is adsorbed in the form of O2– and O– ions and is the acceptor for ZnO. This results in the lowering of the inter-crystallite potential barriers in the ceramic. The surface electron states (SES) above the Fermi level are virtually uncharged. The increase of the conductivity causes desorption of oxygen from the SES settled below the Fermi level of the semiconductor. The model allows evaluating the depth of the Fermi level in the inhomogeneous semiconductor materials. |
| first_indexed | 2025-09-24T17:30:47Z |
| format | Article |
| id | oai:tkea.com.ua:article-345 |
| institution | Technology and design in electronic equipment |
| language | Ukrainian |
| last_indexed | 2025-09-24T17:30:47Z |
| publishDate | 2013 |
| publisher | PE "Politekhperiodika", Book and Journal Publishers |
| record_format | ojs |
| spelling | oai:tkea.com.ua:article-3452025-05-30T19:35:01Z Study of adsorption states in ZnO–Ag gas-sensitive ceramics using the ECTV curves method Изучение адсорбционных состояний в керамике ZnO–Ag методом ТВЭ-кривых Lyashkov, A. Yu. ceramics zinc oxide Ag vacuum semiconductor desorption conductivity Fermi level band diagram керамика оксид цинка Ag вакуум адсорбция десорбция электропроводность уровень Ферми зонная диаграмма The ZnO–Ag ceramic system as the material for semiconductor sensors of ethanol vapors was proposed quite a long time ago. The main goal of this work was to study surface electron states of this system and their relation with the electric properties of the material. The quantity of doping with Ag2O was changed in the range of 0.1–2.0% of mass. The increase of the Ag doping leads to a shift of the Fermi level down (closer to the valence zone). The paper presents research results on electrical properties of ZnO–Ag ceramics using the method of thermal vacuum curves of electrical conductivity. Changes in the electrical properties during heating in vacuum in the temperature range of 300–800 K were obtained and discussed. The increase of Tvac leads to removal of oxygen from the surface of samples The oxygen is adsorbed in the form of O2– and O– ions and is the acceptor for ZnO. This results in the lowering of the inter-crystallite potential barriers in the ceramic. The surface electron states (SES) above the Fermi level are virtually uncharged. The increase of the conductivity causes desorption of oxygen from the SES settled below the Fermi level of the semiconductor. The model allows evaluating the depth of the Fermi level in the inhomogeneous semiconductor materials. Приведены результаты экспериментальных исследований поверхностных электронных состояний, обусловленных адсорбцией газов на поверхности газочувствительной керамики ZnO—Ag, методом термовакуумных кривых электропроводности. Исследования проводились в интервале температур 300–800 К. Предложена модель, позволяющая оценить глубину залегания уровня Ферми в неоднородных полупроводниковых материалах. PE "Politekhperiodika", Book and Journal Publishers 2013-12-19 Article Article Peer-reviewed Article application/pdf https://www.tkea.com.ua/index.php/journal/article/view/TKEA2013.6.46 10.15222/TKEA2013.6.46 Technology and design in electronic equipment; No. 6 (2013): Tekhnologiya i konstruirovanie v elektronnoi apparature; 46-51 Технологія та конструювання в електронній апаратурі; № 6 (2013): Технология и конструирование в электронной аппаратуре; 46-51 3083-6549 3083-6530 uk https://www.tkea.com.ua/index.php/journal/article/view/TKEA2013.6.46/308 Copyright (c) 2013 Lyashkov A. Yu. http://creativecommons.org/licenses/by/4.0/ |
| spellingShingle | керамика оксид цинка Ag вакуум адсорбция десорбция электропроводность уровень Ферми зонная диаграмма Lyashkov, A. Yu. Изучение адсорбционных состояний в керамике ZnO–Ag методом ТВЭ-кривых |
| title | Изучение адсорбционных состояний в керамике ZnO–Ag методом ТВЭ-кривых |
| title_alt | Study of adsorption states in ZnO–Ag gas-sensitive ceramics using the ECTV curves method |
| title_full | Изучение адсорбционных состояний в керамике ZnO–Ag методом ТВЭ-кривых |
| title_fullStr | Изучение адсорбционных состояний в керамике ZnO–Ag методом ТВЭ-кривых |
| title_full_unstemmed | Изучение адсорбционных состояний в керамике ZnO–Ag методом ТВЭ-кривых |
| title_short | Изучение адсорбционных состояний в керамике ZnO–Ag методом ТВЭ-кривых |
| title_sort | изучение адсорбционных состояний в керамике zno–ag методом твэ-кривых |
| topic | керамика оксид цинка Ag вакуум адсорбция десорбция электропроводность уровень Ферми зонная диаграмма |
| topic_facet | ceramics zinc oxide Ag vacuum semiconductor desorption conductivity Fermi level band diagram керамика оксид цинка Ag вакуум адсорбция десорбция электропроводность уровень Ферми зонная диаграмма |
| url | https://www.tkea.com.ua/index.php/journal/article/view/TKEA2013.6.46 |
| work_keys_str_mv | AT lyashkovayu studyofadsorptionstatesinznoaggassensitiveceramicsusingtheectvcurvesmethod AT lyashkovayu izučenieadsorbcionnyhsostoânijvkeramikeznoagmetodomtvékrivyh |