Co-Doped LaFeO3 Gas Sensor for Fast Low-Power Acetone Detection

被引：9

作者：

Jing, Zhao-Jun ^{[1
,2
]}

Zhong, Zhi-Cheng ^{[1
,2
]}

Zhang, Chun-Ming ^{[1
,2
]}

Gao, Qi-Chen ^{[1
,2
]}

机构：

[1] Jilin Univ, Minist Educ, Key Lab Earth Informat & Instrumentat, Changchun 130012, Peoples R China

[2] Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130012, Peoples R China

来源：

JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS | 2022年 / 17卷 / 05期

关键词：

LaFeO3; Co-Doping; Gas Sensor; Acetone; SENSING PERFORMANCE;

D O I：

10.1166/jno.2022.3251

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：

Co-doped LaFe1-xCoxO3 ( x = 0, 0.1, 0.2, 0.4, 0.6, 0.9) nanomaterial films were prepared via a citric acidassisted sol-gel method and characterized by various techniques. Compared with pure LaFeO3, the optimum operating temperature of the LaFe0.9Co0.1O3 gas sensor dropped to 110 degrees C from 140 degrees C. The response value to 100 ppm acetone was 35.89, with a fast response-recovery time of 14/9 s. The enhanced gas sensitivity may be attributed to the higher number of surface oxygen vacancies and larger specific surface area of LaFe0.9Co0.1O3. Doping with Co ions improved the moisture resistance of the LaFeO3 sensor at 18%-54% relative humidity. Appropriate doping of Co3+ into LaFeO3 nanofibers is a promising method for designing and fabricating an acetone sensor with high gas-sensing performance.

引用

页码：775 / 784

页数：10

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