Non-ohmic conduction in tin dioxide based ceramics with copper addition
The current-voltage characteristics and temperature dependences of electrical conductivity in SnO₂-Co₃O₄-Nb₂O₅-Cr₂O₃-CuO semiconductor ceramics are studied, and possible mechanism of non-ohmic conduction in these materials is discussed. Due to addition of CuO up to 0.5 mol.%, the nonlinearity...
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| Дата: | 2011 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2011
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| Назва видання: | Semiconductor Physics Quantum Electronics & Optoelectronics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/117625 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Non-ohmic conduction in tin dioxide based ceramics with copper addition / A.V. Gaponov, A.B. Glot // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2011. — Т. 14, № 1. — С. 71-76. — Бібліогр.: 24 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1176252017-05-26T03:03:24Z Non-ohmic conduction in tin dioxide based ceramics with copper addition Gaponov, A.V. Glot, A.B. The current-voltage characteristics and temperature dependences of electrical conductivity in SnO₂-Co₃O₄-Nb₂O₅-Cr₂O₃-CuO semiconductor ceramics are studied, and possible mechanism of non-ohmic conduction in these materials is discussed. Due to addition of CuO up to 0.5 mol.%, the nonlinearity coefficient is increased up to 75, and the electric field is decreased down to 3900 V∙cm¹ (at 1 mA∙cm⁻²). It makes CuO addition useful for the preparation of SnO₂-based varistors. It is concluded that the electrical conduction is controlled by grain-boundary barriers. The activation energy of electrical conduction (the barrier height φ) is decreased with an increase in the electric field E. The higher slope of the dependence at high fields can be related to a participation of minority carriers (holes). The addition of more than 0.5 mol.% CuO leads to degradation of the varistor effect due to percolation via quite conductive CuO-based intergranular phase. 2011 Article Non-ohmic conduction in tin dioxide based ceramics with copper addition / A.V. Gaponov, A.B. Glot // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2011. — Т. 14, № 1. — С. 71-76. — Бібліогр.: 24 назв. — англ. 1560-8034 PACS 73.30.+y, 73.40.-c, 73.50.Fq http://dspace.nbuv.gov.ua/handle/123456789/117625 en Semiconductor Physics Quantum Electronics & Optoelectronics Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
The current-voltage characteristics and temperature dependences of electrical
conductivity in SnO₂-Co₃O₄-Nb₂O₅-Cr₂O₃-CuO semiconductor ceramics are studied, and
possible mechanism of non-ohmic conduction in these materials is discussed. Due to
addition of CuO up to 0.5 mol.%, the nonlinearity coefficient is increased up to 75, and
the electric field is decreased down to 3900 V∙cm¹ (at 1 mA∙cm⁻²). It makes CuO addition useful for the preparation of SnO₂-based varistors. It is concluded that the electrical conduction is controlled by grain-boundary barriers. The activation energy of
electrical conduction (the barrier height φ) is decreased with an increase in the electric field E. The higher slope of the dependence at high fields can be related to a participation of minority carriers (holes). The addition of more than 0.5 mol.% CuO leads to degradation of the varistor effect due to percolation via quite conductive CuO-based intergranular phase. |
| format |
Article |
| author |
Gaponov, A.V. Glot, A.B. |
| spellingShingle |
Gaponov, A.V. Glot, A.B. Non-ohmic conduction in tin dioxide based ceramics with copper addition Semiconductor Physics Quantum Electronics & Optoelectronics |
| author_facet |
Gaponov, A.V. Glot, A.B. |
| author_sort |
Gaponov, A.V. |
| title |
Non-ohmic conduction in tin dioxide based ceramics with copper addition |
| title_short |
Non-ohmic conduction in tin dioxide based ceramics with copper addition |
| title_full |
Non-ohmic conduction in tin dioxide based ceramics with copper addition |
| title_fullStr |
Non-ohmic conduction in tin dioxide based ceramics with copper addition |
| title_full_unstemmed |
Non-ohmic conduction in tin dioxide based ceramics with copper addition |
| title_sort |
non-ohmic conduction in tin dioxide based ceramics with copper addition |
| publisher |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| publishDate |
2011 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/117625 |
| citation_txt |
Non-ohmic conduction in tin dioxide based ceramics with copper addition / A.V. Gaponov, A.B. Glot // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2011. — Т. 14, № 1. — С. 71-76. — Бібліогр.: 24 назв. — англ. |
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Semiconductor Physics Quantum Electronics & Optoelectronics |
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2023-10-18T20:30:14Z |
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2023-10-18T20:30:14Z |
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