Portable and Room Temperature Operating H2S Gas Detection and Alert System Using Nanocrystalline SnO2 Thin Films

被引：2

作者：

Kanth, Supriya ^{[1
,2
]}

Chikara, Ajai Kumar ^{[1
,3
]}

Choudhury, Sipra ^{[1
,2
]}

Betty, C. A. ^{[1
,2
]}

机构：

[1] Homi Bhabha Natl Inst, Mumbai 400094, India

[2] BARC, Chem Div, Mumbai 400085, India

[3] BARC, Radiol Phys & Advisory Div, Mumbai 400085, India

来源：

IEEE SENSORS LETTERS | 2023年 / 7卷 / 05期

关键词：

Sensor systems; chemiresistive sensor; electronic alarm; hydrogen sulphide (H2S) sensor; nanostructured tin oxide (SnO2); portable gas sensor; wireless sensor; SENSOR; NANOCOMPOSITE;

D O I：

10.1109/LSENS.2023.3267510

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：

Portable, compact, wireless, and hand-held electronic alarms which can detect hydrogen sulphide (H2S) gas at room temperature from 1 to 40 ppm is fabricated using nanostructured tin oxide (SnO2) thin film deposited on quartz using the Langmuir Blodgett technique. It was demonstrated that SnO2 thin film with gold contacts works as a chemiresistive, selective, and sensitive sensor for H2S gas at room temperature. Few SnO2 thin films were studied for extracting the sensitivity and accuracy parameters of the sensor. Using the optimized parameters, an electronic alarm with less than 5 V input power requirement was fabricated to make it inherently safe for explosive environments. Specificity, reliability and stability studies of the sensors showed satisfactory performance for using these sensors for monitoring H2S leak. Along with the 3-D printed light weight gas sensor housing, it makes a hazard free, compact, reliable, and versatile sensing device.

引用

页数：4

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