Enhanced ethanol sensing performance of mesoporous Sn-doped ZnO

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• 作者：Sicheng Luo ; Yue Shen ; ^{yueshen@shu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Zhongrui Wu ; Meng Cao ; ^{caomeng@shu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Feng Gu ; Linjun Wang
• 关键词：ZnO ; Sn-doped ; Mesoporous ; Ethanol ; Gas sensing
• 刊名：Materials Science in Semiconductor Processing
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：41
• 期：Complete
• 页码：535-543
• 全文大小：2778 K

文摘

Mesoporous ZnO and Sn-doped ZnO were greenly synthesized by a low-cost and simple hydrothermal strategy assisted with Pluronic P123 (poly (ethylene glycol)-block-poly (propylene glycol)-block-poly (ethylene glycol)) as the surface active agent. The thick films of the gas sensing devices were prepared by a coating process. The responses to ethanol vapor of pure ZnO and Sn-doped thick films were investigated in the temperature range of 260–400 °C. According to the results, Sn-doped ZnO samples not only had obvious response to ethanol vapor, but exhibited excellent sensitivity as well. When the concentration of ethanol reached 100 ppm, sensitivity of Sn-doped ZnO (8.5 at%) reached 54.386 at 340 °C, which was about four-fold than that of pure ZnO.