Effect of indium-doped SnO2 nanoparticles on NO2 gas sensing properties

被引：128

作者：

Kaur, Jaswinder ^{[1
]}

Kumar, Rajesh ^{[1
]}

Bhatnagar, M. C. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Thin Film Lab, New Delhi 110016, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2007年 / 126卷 / 02期

关键词：

SnO2 thin film; NO2; gas sensors; low operating temperature;

D O I：

10.1016/j.snb.2007.03.033

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Undoped and indium-doped SnO2, thin films with different doping concentrations have been prepared by sol-gel spin coating process on float glass substrates. XRD, TEM and AFM studies are carried out to investigate the effect of indium in SnO2, thin films. TEM studies reveal the dispersed nanoparticles of around 3 nm size (similar to Debye length). In addition we have observed that indium doping improves the sensor response and selectivity towards NO2 gas at a low operating temperature and also resolves the problem of agglomeration of particles that is responsible for the lowering of sensor response and stability in the above mentioned particle size range. A very high sensor response of around 7200% has been observed in 10 wt% indium-doped SnO2, films to 500 ppm of NO, gas at an operating temperature of 150 degrees C. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：478 / 484

页数：7

共 19 条

[11] Fabrication and characterization of indium-doped p-type SnO2 thin films
Ji, ZG
He, ZJ
Song, YL
Liu, K
Ye, ZZ
[J]. JOURNAL OF CRYSTAL GROWTH, 2003, 259 (03) : 282 - 285
[12] The influence of film structure on In2O3 gas response
Korotcenkov, G
Brinzari, V
Cerneavschi, A
Ivanov, M
Golovanov, V
Cornet, A
Morante, J
Cabot, A
Arbiol, J
[J]. THIN SOLID FILMS, 2004, 460 (1-2) : 315 - 323
[13] Preparation and characterization of indium-doped tin oxide thin films
Manoj, P. K.
Joseph, Benny
Vaidyan, V. K.
Amma, D. Sumangala Devi
[J]. CERAMICS INTERNATIONAL, 2007, 33 (02) : 273 - 278
[14] SEMICONDUCTOR GAS SENSORS
MORRISON, SR
[J]. SENSORS AND ACTUATORS, 1982, 2 (04): : 329 - 341
[15] Tin dioxide thin film gas sensor
Mukhopadhyay, AK
Mitra, P
Chatterjee, AP
Maiti, HS
[J]. CERAMICS INTERNATIONAL, 2000, 26 (02) : 123 - 132
[16] Gas-sensing properties of indium-doped SnO2 thin films with variations in indium concentration
Salehi, A
Gholizade, M
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2003, 89 (1-2) : 173 - 179
[17] Sberveglieri G., 1999, 1998 Conference on Optoelectronic and Microelectronic Materials and Devices. Proceedings (Cat. No.98EX140), P65, DOI 10.1109/COMMAD.1998.791587
[18] Hydrogen-discriminating nanocrystalline doped-tin-oxide room-temperature microsensor
Shukla, S
Zhang, P
Cho, HJ
Rahman, Z
Drake, C
Seal, S
Craciun, V
Ludwig, L
[J]. JOURNAL OF APPLIED PHYSICS, 2005, 98 (10)
[19] GRAIN-SIZE EFFECTS ON GAS SENSITIVITY OF POROUS SNO2-BASED ELEMENTS
XU, CN
TAMAKI, J
MIURA, N
YAMAZOE, N
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 1991, 3 (02) : 147 - 155

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