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Rapidly Synthesized ZnO Nanowires by Ultraviolet Decomposition Process in Ambient Air for Flexible Photodetector

Rapidly Synthesized ZnO Nanowires by Ultraviolet Decomposition Process in Ambient Air for Flexible Photodetector

Jyh Ming Wu, Yi-Ru Chen, Yu-Hung Lin

Nanoscale. 2011 Mar;3(3):1053-8.

PMID: 21157602

Abstract:

We are the first group to use a simple direct ultraviolet light (UV, λ=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 ∼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 (λ=365 nm, I=2.34 mW cm(-2)). A significant ratio of photocurrent to dark current--around 11,300%--was achieved.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP108503475	Zinc acetylacetonate hydrate		108503-47-5	Price

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