Temperature-Programmed Technique Accompanied with High-Throughput Methodology for Rapidly Searching the Optimal Operating Temperature of MOX Gas Sensors

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• 作者：Guozhu Zhang ; Changsheng Xie ; Shunping Zhang ; Jianwei Zhao ; Tao Lei ; Dawen Zeng
• 刊名：ACS Combinatorial Science
• 出版年：2014
• 出版时间：September 8, 2014
• 年：2014
• 卷：16
• 期：9
• 页码：459-465
• 全文大小：587K
• ISSN：2156-8944

文摘

A combinatorial high-throughput temperature-programmed method to obtain the optimal operating temperature (OOT) of gas sensor materials is demonstrated here for the first time. A material library consisting of SnO₂, ZnO, WO₃, and In₂O₃ sensor films was fabricated by screen printing. Temperature-dependent conductivity curves were obtained by scanning this gas sensor library from 300 to 700 K in different atmospheres (dry air, formaldehyde, carbon monoxide, nitrogen dioxide, toluene and ammonia), giving the OOT of each sensor formulation as a function of the carrier and analyte gases. A comparative study of the temperature-programmed method and a conventional method showed good agreement in measured OOT.

Keywords:

high-throughput screening; gas sensor; arrays; temperature-dependent conductivity; isothermal technique; oxide materials