Enhanced photoconduction of free-standing ZnO nanowire films by L-lysine treatment

被引：20

作者：

Liu, Jinzhang ^{[1
]}

Park, Jaeku ^{[1
]}

Park, Kyung Ho ^{[2
]}

Ahn, Yeonghwan ^{[1
]}

Park, Ji-Yong ^{[1
]}

Koh, Ken Ha ^{[1
]}

Lee, Soonil ^{[1
]}

机构：

[1] Ajou Univ, Div Energy Syst Res, Suwon 443749, South Korea

[2] Korea Adv Nano Fab Ctr, Suwon 443270, South Korea

来源：

NANOTECHNOLOGY | 2010年 / 21卷 / 48期

基金：

新加坡国家研究基金会;

关键词：

PHOTORESPONSE;

D O I：

10.1088/0957-4484/21/48/485504

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Flexible paper-like ZnO nanowire films are fabricated and the effect of L-lysine passivation of the nanowire surfaces on improving the UV photoresponse is studied. We prepare three types of nanowires with different defect contents, and find that the L-lysine treatment can suppress the oxygen-vacancy-related photoluminescence as well as enhance the UV photoconduction. The nanowires with fewer defects gain larger enhancement of UV photoconduction after L-lysine treatment. Reproducible UV photoresponse of the devices in humid air is obtained due to L-lysine surface passivation, ruling out the influence of water molecules in degrading the UV photocurrent.

引用

页数：7

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