Efectos de la exposición a vacío y aire de películas de SnO2 con distinto espesor
Gas sensors based in semiconductor oxides show a change in the resistance when they are exposed to certain gaseous atmospheres. In this paper, the influence on the sensor electrical resistance with the film thickness in vacuum and air are studied. The conduction process is analyzed considering the e...
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2003-01-01
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Series: | Materials Research |
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Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000400015 |
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doaj-00e7fcef69dd4cb49e9809de75e1c0b42020-11-24T22:49:55ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392003-01-0164515518Efectos de la exposición a vacío y aire de películas de SnO2 con distinto espesorPonce Miguel AdolfoCastro Miriam SusanaMoncada Osvaldo JulioEcheverría Maria DoloresAldao Celso ManuelGas sensors based in semiconductor oxides show a change in the resistance when they are exposed to certain gaseous atmospheres. In this paper, the influence on the sensor electrical resistance with the film thickness in vacuum and air are studied. The conduction process is analyzed considering the existence of Schottky potential barriers at the grain boundaries. These barriers are affected by the intergranular gas diffusion. This process increases the barrier height and width, altering the electrical resistance. Also, the influence of the diffusion process on the stabilization time is analized.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000400015SnO2conduction mechanismsair |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ponce Miguel Adolfo Castro Miriam Susana Moncada Osvaldo Julio Echeverría Maria Dolores Aldao Celso Manuel |
spellingShingle |
Ponce Miguel Adolfo Castro Miriam Susana Moncada Osvaldo Julio Echeverría Maria Dolores Aldao Celso Manuel Efectos de la exposición a vacío y aire de películas de SnO2 con distinto espesor Materials Research SnO2 conduction mechanisms air |
author_facet |
Ponce Miguel Adolfo Castro Miriam Susana Moncada Osvaldo Julio Echeverría Maria Dolores Aldao Celso Manuel |
author_sort |
Ponce Miguel Adolfo |
title |
Efectos de la exposición a vacío y aire de películas de SnO2 con distinto espesor |
title_short |
Efectos de la exposición a vacío y aire de películas de SnO2 con distinto espesor |
title_full |
Efectos de la exposición a vacío y aire de películas de SnO2 con distinto espesor |
title_fullStr |
Efectos de la exposición a vacío y aire de películas de SnO2 con distinto espesor |
title_full_unstemmed |
Efectos de la exposición a vacío y aire de películas de SnO2 con distinto espesor |
title_sort |
efectos de la exposición a vacío y aire de películas de sno2 con distinto espesor |
publisher |
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
series |
Materials Research |
issn |
1516-1439 |
publishDate |
2003-01-01 |
description |
Gas sensors based in semiconductor oxides show a change in the resistance when they are exposed to certain gaseous atmospheres. In this paper, the influence on the sensor electrical resistance with the film thickness in vacuum and air are studied. The conduction process is analyzed considering the existence of Schottky potential barriers at the grain boundaries. These barriers are affected by the intergranular gas diffusion. This process increases the barrier height and width, altering the electrical resistance. Also, the influence of the diffusion process on the stabilization time is analized. |
topic |
SnO2 conduction mechanisms air |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000400015 |
work_keys_str_mv |
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1725674353604952064 |