Origin of the red emission in zinc oxide nanophosphors

被引：271

作者：

Kumar, Vinod ^{[1
]}

Swart, H. C. ^{[1
]}

Ntwaeaborwa, O. M. ^{[1
]}

Kroon, R. E. ^{[1
]}

Terblans, J. J. ^{[1
]}

Shaat, S. K. K. ^{[1
]}

Yousif, A. ^{[1
]}

Duvenhage, M. M. ^{[1
]}

机构：

[1] Univ Orange Free State, Dept Phys, ZA-9300 Bloemfontein, South Africa

来源：

MATERIALS LETTERS | 2013年 / 101卷

基金：

新加坡国家研究基金会;

关键词：

Defects; Phosphors; XPS; ZnO; ZNO NANOPARTICLES; CATHODOLUMINESCENCE; PHOTOLUMINESCENCE; LAYERS; GREEN; FILMS; XPS;

D O I：

10.1016/j.matlet.2013.03.073

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

UV and orange-red light emitting zinc oxide nano-phosphors (ZnO NPr) were synthesised by a combustion method using zinc nitrate and zinc acetate as precursors and urea as a fuel. Hexagonal wurtzite structures of ZnO were synthesised. X-ray photoelectron spectroscopy (XPS) indicated that the O1s peak consist of three components: O1 (ZnO), O2 (deficient oxygen; OH groups) and O3 (adsorbed species) centred at 530.3, 531.2 and 532.6 eV, respectively. A broad orange-red emission from 500 to 850 nm was obtained from the ZnO NPr prepared with the nitrate precursor which may be attributed to different kinds of defects, and a sharp UV band, due to the possible passivation of defects, at 392 nm from ZnO NPr prepared with acetate precursor. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：57 / 60

页数：4

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