SnS-functionalized SnO2 nanowires for low-temperature detection of NO2 gas

被引：21

作者：

Bang, Jae Hoon ^{[1
]}

Lee, Namgue ^{[2
]}

Mirzaei, Ali ^{[3
,4
]}

Choi, Myung Sik ^{[1
]}

Choi, Hyeong Su ^{[1
]}

Park, Hyunwoo ^{[1
]}

Jeon, Hyeongtag ^{[1
,2
]}

Kim, Sang Sub ^{[5
]}

Kim, Hyoun Woo ^{[1
,3
]}

机构：

[1] Hanyang Univ, Div Mat Sci & Engn, Seoul 133791, South Korea

[2] Hanyang Univ, Dept Nanoscale Semicond Engn, Seoul 133791, South Korea

[3] Hanyang Univ, Res Inst Ind Sci, Seoul 133791, South Korea

[4] Shiraz Univ Technol, Dept Mat Sci & Engn, Shiraz, Iran

[5] Inha Univ, Dept Mat Sci & Engn, Incheon 402751, South Korea

来源：

MATERIALS CHARACTERIZATION | 2021年 / 175卷

基金：

新加坡国家研究基金会;

关键词：

Gas sensor; NO2; gas; SnS; SnO2; Nanowires; Sensing mechanism; SENSING PROPERTIES; ROOM-TEMPERATURE; SENSORS; NANOPARTICLES; GENERATION; MORPHOLOGY; LAYER; AU;

D O I：

10.1016/j.matchar.2021.110986

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We explored NO2 sensing performance of bare and SnS nanoparticle (NP)-functionalized SnO2 nanowires (NWs). The SnO2 NWs were synthesized and functionalization with SnS NPs was done by atomic layer deposition with subsequent annealing. The NO2 gas sensing results revealed that at temperatures up to 100 degrees C, the performance of the SnS-coated SnO2 NWs was better than bare SnO2 NWs. Moreover, the response time of SnS-coated SnO2 NWs to 2 ppm NO2 was 69 s at 100 degrees C, namely 9.1 times faster than that of bare SnO2 NWs. The sensing mechanisms related to the SnS-functionalized SnO2 gas sensor were proposed. The obtained results could present possibilities for the realization of low-temperature SnO2 NW-based gas sensors.

引用

页数：11

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