Sonochemical synthesis and optical properties of amorphous ZnO nanowires |
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Authors: | ShaoMin Zhou RuiJian Yuan ShiYun Lou YongQiang Wang HongLei Yuan GongYu Zhu LiSheng Liu YaoMing Hao Ning Li |
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Affiliation: | (1) Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, 475004, People’s Republic of China |
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Abstract: | Large-scale amorphous wire-like ZnO nanostructures were prepared by ultrasonic spray pyrolysis Zn(CO)5 without involvement of any template or patterned catalyst. The as-obtained amorphous ZnO nanowires were characterized using scanning/transmission electron microscopy, X-ray diffraction/photoelectron spectroscopy, energy-dispersed X-ray spectrometry, selected area electronic diffraction, and high-resolution transmission electron microscopy. The results reveal the as-made noncrystalline samples are about 30–60 nm in diameter and several tens of microns in length and the growth mechanism is tentatively proposed as the self-assembly soft template mechanism. The photoluminescence spectra in all of the as-studied specimens exhibit one wide visible emission peak in about 508 nm. The corresponding PL intensity greatly increased with an annealing temperature, which has an application for a high efficiency vacuum fluorescent displays and a low-voltage phosphor. |
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