A review of advanced gas sensor based on sputtering SnO2 thin film- challenges and opportunities

被引：4
|
作者：
Tian, Xin [1 ,2 ,3 ]
Hu, Zongxin [1 ,2 ]
Jia, Chen [1 ,2 ]
Wang, Hairong [1 ,2 ]
Wei, Xueyong [1 ,2 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Shaanxi, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Shaanxi, Peoples R China
[3] UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2023年 / 11卷 / 06期
关键词：
SnO2 thin films; High sensitivity; Sputtering parameters; MEMS; Gas sensors; CO SENSING CHARACTERISTICS; TIN OXIDE; ROOM-TEMPERATURE; POROUS SNO2; CATALYTIC-ACTIVITY; ENHANCED RESPONSE; CUO ISLANDS; NO2; SENSITIVITY; HYDROGEN;
D O I：
10.1016/j.jece.2023.111516
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Micro Electro Mechanical System (MEMS) gas sensors based on sputtered SnO2 thin films have been widely studied for emitted gases and VOCs due to their advantages such as low cost, small size, and high sensitivity. In this review, authors review articles focusing on the influence of sputtering parameters on sputtered SnO2 thin films, in which the influence of sputtering angle, pressure, power, and atmosphere, and substrate temperature, and film thickness are discussed in depth in the context of their effects on the physical properties of the sputtered SnO2 thin films. Subsequently, the practical utilizations of gas sensors based on sputtered SnO2 thin films for detection of H2, VOCs, H2S, NO2, and NH3 are also discussed. The research advances and inadequacies of the sensors are summarized from the perspective of practical commercial gas sensors. Furthermore, the challenges and opportunities for gas-sensing film based on sputtered SnO2 films are addressed. Particularly, how to decrease the optimal working temperature is theoretically analyzed.
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页数：17
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