Enhanced UV photoresponse in nitrogen plasma ZnO nanotubes

N. Chantarat, Yu Wei Chen, San-Yuan Chen*, Chin Ching Lin

*此作品的通信作者

研究成果: Article同行評審

31 引文 斯高帕斯(Scopus)

摘要

The photoresponse behavior of one-dimensional ZnO nanowires (NWs) and nanotubes (NTs) grown on ITO-coated glass substrates via a wet-chemical route was investigated. The photoluminescence spectra exhibited a decrease in the deep-level intensity, indicating that the oxygen defects and impurities are occupied by the presence of N ions in the ZnO NT matrix after a nitrogen plasma treatment. I-V tests demonstrate an enhanced dark current (4.83 × 10 -7A) after an extended plasma treatment of up to 900 s for ZnO NTs compared to that (0.571 × 10-7A) of NWs. Furthermore, the ZnO NTs show the highest reliable photoresponse, 20 times that of NWs under UV irradiation (325nm) in air at room temperature. It is believed that nitrogen plasma ZnO nanotubes can potentially be useful in the designs of 1D ZnO-based solar cells and optoelectronic devices.

原文English
文章編號395201
期刊Nanotechnology
20
發行號39
DOIs
出版狀態Published - 21 九月 2009

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