Nature of Dopants and Effects on Sensitivity of SnO 2 Based Gas Sensor

被引：1

作者：

Srivastava, J. K. ^{[1
]}

Pandey, Preeti ^{[1
]}

Mishra, V. N. ^{[1
]}

Dwivedi, R. ^{[1
]}

机构：

[1] Banaras Hindu Univ, Inst Technol, Dept Elect Engn, Microelect Res Ctr, Varanasi 221005, Uttar Pradesh, India

来源：

IETE JOURNAL OF RESEARCH | 2009年 / 55卷 / 06期

关键词：

Gas sensor; LPG; Pd; Sensitivity; Tin oxide; Thick film; STANNIC OXIDE CRYSTALS; H BOND ACTIVATION; HYDROCARBON OXIDATION; LPG; CATALYSTS;

D O I：

10.4103/0377-2063.59170

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work, a thick film SnO 2 sensor was fabricated on a 1" x 1" alumina substrate. It consists of a gas sensitive layer (SnO 2 ) doped with Pd and Pt; a pair of electrodes in array form underneath the gas sensing layers serves as a contact pad for sensor and a common heater element on the backside of the substrate. Alumina substrate (96) has been used as a substrate for sensor fabrication. The fabricated sensor was tested for varying concentration of LPG and methane in a locally developed test chamber. The response of sensors to varying concentration of LPG and methane was studied at 350 C. The Pd-doped sensor was found to be more sensitive towards LPG and methane.

引用

页码：299 / 303

页数：5

共 14 条

[1] First-principles investigations of the electronic, optical and chemical bonding properties of SnO2 [J].