Simple fabrication process for 2D ZnO nanowalls and their potential application as a methane sensor

Tse Pu Chen, Sheng Po Chang, Fei Yi Hung, Shoou Jinn Chang, Zhan Shuo Hu, Kuan Jen Chen

研究成果: Article同行評審

47 引文 斯高帕斯(Scopus)

摘要

Two-dimensional (2D) ZnO nanowalls were prepared on a glass substrate by a low-temperature thermal evaporation method, in which the fabrication process did not use a metal catalyst or the pre-deposition of a ZnO seed layer on the substrate. The nanowalls were characterized for their surface morphology, and the structural and optical properties were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and photoluminescence (PL). The fabricated ZnO nanowalls have many advantages, such as low growth temperature and good crystal quality, while being fast, low cost, and easy to fabricate. Methane sensor measurements of the ZnO nanowalls show a high sensitivity to methane gas, and rapid response and recovery times. These unique characteristics are attributed to the high surface-to-volume ratio of the ZnO nanowalls. Thus, the ZnO nanowall methane sensor is a potential gas sensor candidate owing to its good performance.

原文English
頁(從 - 到)3941-3950
頁數10
期刊Sensors (Switzerland)
13
發行號3
DOIs
出版狀態Published - 2013 三月

All Science Journal Classification (ASJC) codes

  • 分析化學
  • 生物化學
  • 原子與分子物理與光學
  • 儀器
  • 電氣與電子工程

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