CO sensing properties of Ga-doped ZnO prepared by sol-gel route

被引：72
作者：
Hjiri, M. [1 ,2 ]
Dhahri, R. [1 ,2 ]
El Mir, L. [1 ,3 ]
Bonavita, A. [2 ]
Donato, N. [2 ]
Leonardi, S. G. [2 ]
Neri, G. [2 ]
机构：
[1] Gabes Univ, Fac Sci Gabes, Lab Phys Mat & Nanomat Appl Environm, Gabes 6072, Tunisia
[2] Univ Messina, Dept Elect Engn Chem & Ind Engn, I-98166 Messina, Italy
[3] Al Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Dept Phys, Riyadh 11623, Saudi Arabia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 634卷
关键词：
Ga-doped ZnO; Nanoparticles; Sol-gel; Gas sensor; CO; ELECTRICAL-PROPERTIES; THIN-FILM; SENSOR; TEMPERATURE; FABRICATION;
D O I：
10.1016/j.jallcom.2015.02.083
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The microstructural and functional characterization of pure and Ga (1-5 at.%)-doped ZnO nanoparticles synthetized by sol-gel method is reported. All the samples, characterized by XRD and TEM, showed the nanocrystalline ZnO wurtzite structure. However, depending on the Ga content, the morphological, microstructural and electrical properties of doped samples changed markedly with respect to the undoped ZnO. The effect of gallium dopant on sensing properties of thick films of ZnO nanoparticles, deposited on alumina substrates provided with Pt interdigited electrodes for the application as CO resistive sensors, have been investigated. Sensors based on Ga-doped ZnO exhibited a higher response (R-0/R = 9, to 50 ppm of CO at the operating temperature of 250 degrees C) and lower response/recovery time (8 and 35 s, respectively) than the pure ZnO sample, allowing to detect CO at sub-ppm concentrations in air. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：187 / 192
页数：6
相关论文
共 29 条
[1]   Investigation of TiO2 thick film capacitors for use as strain gauge sensors [J].
Arshak, A ;
Arshak, K ;
Morris, D ;
Korostynska, O ;
Jafer, E .
SENSORS AND ACTUATORS A-PHYSICAL, 2005, 122 (02) :242-249
[2]   Metrological characteristics of ZNO oxygen sensor at room temperature [J].
Chaabouni, F ;
Abaab, M ;
Rezig, B .
SENSORS AND ACTUATORS B-CHEMICAL, 2004, 100 (1-2) :200-204
[3]  
Chen Y., 1998, J APPL PHYS, V84, P3198
[4]   Synthesis and characterization of Cu-doped ZnO one-dimensional structures for miniaturized sensor applications with faster response [J].
Chow, L. ;
Lupan, O. ;
Chai, G. ;
Khallaf, H. ;
Ono, L. K. ;
Roldan Cuenya, B. ;
Tiginyanu, I. M. ;
Ursaki, V. V. ;
Sontea, V. ;
Schulte, A. .
SENSORS AND ACTUATORS A-PHYSICAL, 2013, 189 :399-408
[5]   CO optical sensing properties of nanocrystalline ZnO-Au films: Effect of doping with transition metal ions [J].
Della Gaspera, E. ;
Guglielmi, M. ;
Perotto, G. ;
Agnoli, S. ;
Granozzi, G. ;
Post, M. L. ;
Martucci, A. .
SENSORS AND ACTUATORS B-CHEMICAL, 2012, 161 (01) :675-683
[6]   Synthesis and luminescence properties of vanadium-doped nanosized zinc oxide aerogel [J].
El Mir, L. ;
El Ghoul, J. ;
Alaya, S. ;
Ben Salem, M. ;
Barthou, C. ;
von Bardeleben, H. J. .
PHYSICA B-CONDENSED MATTER, 2008, 403 (10-11) :1770-1774
[7]   Nano-crystalline Cu-doped ZnO thin film gas sensor for CO [J].
Gong, H ;
Hu, JQ ;
Wang, JH ;
Ong, CH ;
Zhu, FR .
SENSORS AND ACTUATORS B-CHEMICAL, 2006, 115 (01) :247-251
[8]   Al-doped ZnO for highly sensitive CO gas sensors [J].
Hjiri, M. ;
El Mir, L. ;
Leonardi, S. G. ;
Pistone, A. ;
Mavilia, L. ;
Neri, G. .
SENSORS AND ACTUATORS B-CHEMICAL, 2014, 196 :413-420
[9]   Novel nanosynthesis of In2O3 and its application as a resistive gas sensor for sevoflurane anesthetic [J].
Karmaoui, M. ;
Leonardi, S. G. ;
Tobaldi, D. M. ;
Donato, N. ;
Pullar, R. C. ;
Seabra, M. P. ;
Labrincha, J. A. ;
Neri, G. .
JOURNAL OF MATERIALS CHEMISTRY B, 2015, 3 (03) :399-407
[10]  
Kim EK, 2007, J KOREAN PHYS SOC, V51, pS170
123