Room-temperature oxygen sensitivity of ZnS nanobelts

被引：72
作者：
Liu, Y. G.
Feng, P.
Xue, X. Y.
Shi, S. L.
Fu, X. Q.
Wang, C.
Wang, Y. G.
Wang, T. H. [1 ]
机构：
[1] Humanitas Univ, Res Ctr, Changsha 410082, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 04期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2432278
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Room-temperature oxygen sensing is realized from individual ZnS nanobelts. Under UV illumination the current through ZnS nanobelt increases from 0.265 to 2.26 nA as the oxygen pressure decreases from 1x10(5) to 3x10(-3) Pa. The conductance of ZnS nanobelt exhibits a logarithmic dependence on oxygen pressure, which is in agreement with theoretical prediction. The sensing is based on the enhanced modulation of ZnS nanobelts conductance by adsorbed oxygen under illumination. These results demonstrate an approach to in situ precisely detect oxygen at room temperature. (c) 2007 American Institute of Physics.
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