ZnO-based ultraviolet photodetectors with novel nanosheet structures

Sheng Joue Young, Yi Hsing Liu, Chih Hung Hsiao, Shoou Jinn Chang, Bo Chin Wang, Tsung Hsien Kao, Kai Shiang Tsai, San Lein Wu

研究成果: Article同行評審

26 引文 斯高帕斯(Scopus)

摘要

This study presents the fabrication of ZnO nanosheets on a glass substrate using a room-temperature (approximately 25 °C) solution method. The average length and diameter of the ZnO nanosheets were 1.2 μm and approximately 5 nm, respectively. The ultraviolet (UV)-to-visible rejection ratio of the sample is approximately 42 when biased at 1 V, and the fabricated UV photodetector is visible-blind with a sharp cutoff at 370 nm. The transient time constants measured during the rise time and fall time were τ r = 5.37 s and 6.02 s, respectively. The low-frequency noise spectra obtained from the UV photodetector were caused purely by the 1/ f noise. The noise-equivalent power and normalized detectivity (D*) of the ZnO nanosheet photodetector were 6.12 × 10 -9W and 2.17 × 10 9 cm·Hz0.5 W -1, respectively.

原文English
文章編號6704287
頁(從 - 到)238-244
頁數7
期刊IEEE Transactions on Nanotechnology
13
發行號2
DOIs
出版狀態Published - 2014 三月

All Science Journal Classification (ASJC) codes

  • 電腦科學應用
  • 電氣與電子工程

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