CdxS- and Snx WOy,-based gas sensors: the role of chemical composition in co sensing
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Файли
Дата
2001
Науковий керівник
Укладач
Редактор
Назва журналу
ISSN
E-ISSN
Назва тому
Видавець
Одеський національний університет імені І. І. Мечникова
Анотація
Electronic structure of chemisorption complexes on surface of oxidic a-SnxWOy- and
CdxS-based gas sensors with different elemental composition were comparatively studied
by XPS, CEMS and combined with conductivity measurements. The
surface sites of Cd and Sn with different coordination were characterized by chemisorption
of CO. It was found, differing from the case in well-oxidized S n 0 2, that electrical
conductance of Sn.WO,, and Cd^S films appeared to either increase or decrease
when exposed to CO depended on concentration of surface Sn and Cd ions, partial
pressure of analyzed gas and operating temperature.
Опис
Ключові слова
a-SnxWOy, IR-spectroscopy, CdxS, chemical composition
Бібліографічний опис
Фотоэлектроника = Photoelectronics