ZnO nanowire-based CO sensors prepared on patterned ZnO:Ga/SiO2/Si templates

Ting Jen Hsueh, Yi Wen Chen, Shoou Jinn Chang, Sea Fue Wang, Cheng Liang Hsu, Yan Ru Lin, Tzer Shen Lin, I. Cherng Chen

研究成果: Article同行評審

88 引文 斯高帕斯(Scopus)

摘要

This investigation discusses the growth of high-density single crystalline ZnO nanowires on patterned ZnO:Ga/SiO2/Si templates and the fabrication of ZnO nanowire-based CO gas sensors. The ZnO nanowires grown on a sputtered ZnO:Ga layer were vertically aligned while those grown directly on a SiO2 layer were randomly oriented. Additionally, the average length of the nanowires increased and the average diameter of the nanowires decreased as the amount of zinc metal powder in the quartz tube was increased from 0.1 to 0.25 g. As the amount of zinc metal power increased to 0.3 g, the nanowires became markedly shorter. Measuring the resistivity change of the samples at 320 °C indicated that the sensor responses (((Ra - Rb)/Ra) × 100%, Ra is the resistivity in air and Rb in CO gas) of the ZnO nanowire CO sensors prepared with 0.1, 0.15, 0.2, 0.25 and 0.3 g zinc metal powder were 5%, 8%, 35%, 57% and 29%, respectively.

原文English
頁(從 - 到)498-503
頁數6
期刊Sensors and Actuators, B: Chemical
125
發行號2
DOIs
出版狀態Published - 2007 八月 8

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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