Rapidly synthesized ZnO nanowires by ultraviolet decomposition process in ambient air for flexible photodetector

被引：56

作者：

Wu, Jyh Ming ^{[1
]}

Chen, Yi-Ru ^{[1
]}

Lin, Yu-Hung ^{[2
]}

机构：

[1] Feng Chia Univ, Dept Mat Sci & Engn, Taichung 40724, Taiwan

[2] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

来源：

NANOSCALE | 2011年 / 3卷 / 03期

关键词：

LOW-TEMPERATURE; ORIENTED ATTACHMENT; NANORODS; ZINC; NANOSTRUCTURES; GROWTH; ARRAYS; NANOPARTICLES; DEPOSITION; PHOTONICS;

D O I：

10.1039/c0nr00595a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We are the first group to use a simple direct ultraviolet light (UV, lambda = 365 nm, I = 76 mW cm(-2)) in a decomposition process to fabricate ZnO nanowires on a flexible substrate using a zinc acetylacetonate hydrate precursor in ambient air. ZnO nanocrystal (or nanowire) production only requires three to ten minutes. A field emission scanning electron microscopy (FESEM) image reveals a high aspect ratio of the ZnO nanowires, which are grown on a substrate with a diameter of similar to 50-100 nm, and a length of up to several hundred microns. High resolution transmission electron microscopy (HRTEM) images reveal that the nanowires consist of many single crystalline ZnO nanoparticles that grow along the c axis, which suggests an oriented attachment process. A potential application for flexible UV photodetectors was investigated using a UV lamp (lambda = 365 nm, I = 2.34 mW cm(-2)). A significant ratio of photocurrent to dark current-around 11 300%-was achieved.

引用

页码：1053 / 1058

页数：6

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