Development of gas sensors using ZnO nanostructures

被引：180

作者：

Gupta, S. K. ^{[1
]}

Joshi, Aditee ^{[2
]}

Kaur, Manmeet ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Tech Phys & Prototype Engn Div, Bombay 400085, Maharashtra, India

[2] Univ Poona, Dept Elect Sci, Pune 411007, Maharashtra, India

来源：

JOURNAL OF CHEMICAL SCIENCES | 2010年 / 122卷 / 01期

关键词：

Gas sensors; nanowires; ZnO; tetrapods; NO; H(2)S; ZINC-OXIDE FILMS; SNO2; THIN-FILMS; ROOM-TEMPERATURE; SENSITIVITY;

D O I：

10.1007/s12039-010-0006-y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Different ZnO nanostructures such as nanowires, nanobelts and tetrapods have been grown and used for preparation of thick film (with random grain boundaries) as well as isolated nanowire/nanobelt gas sensors. Sensitivity of different type of sensors has been studied to H(2)S and NO gases. The results show that the response of ZnO sensors to H(2)S arises from grain boundary only whereas both grain boundaries and intragrain resistances contribute towards response to NO. In addition, oxygen vacancies in the lattice were also seen to help in improvement of sensor response. Room temperature operating H(2)S and NO sensors based on ZnO nanowires have been demonstrated. Further, sensors based on isolated nanobelts were found to be highly selective in their response to NO.

引用

页码：57 / 62

页数：6

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