Using CEMS method to study Sb-doped SnO2 thin film as reducing gas sensing material |
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| Authors: | Jun-Jie Zhu Shi-Ling Zang Yun-Hong Zheng |
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| Institution: | (1) University of Science and Technology of China, 230026 Hefei, Anhui, P.R. China |
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| Abstract: | 119Sn Mossbauer spectra for surface layers of thin film Sb doped SnO were obtained by CEMS method, the emissive internal conversion
electrons were detected by multi-wire chamber. In practice the gas-sensing response of these films for H2, CO depended on Sb concentration of doping (X%) and the annealling processes. It was found that the CEMS parameters of samples-(IS),
(QS) and its distribution (HW), reach minima when x=1%, just in agreement with the gas-sensing responsive sensitivity reaching
maximum. And then it is helpful for the study of the gas-sensitive mechanism. |
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