Zinc oxide micro- and nanoparticles: Synthesis, structure and optical properties

被引：21
|
作者：
Kumari, Latha [1 ]
Li, W. Z. [1 ]
Vannoy, Charles H. [2 ]
Leblanc, Roger M. [2 ]
Wang, D. Z. [3 ]
机构：
[1] Florida Int Univ, Dept Phys, Miami, FL 33199 USA
[2] Univ Miami, Dept Chem, Coral Gables, FL 33124 USA
[3] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA
来源：
MATERIALS RESEARCH BULLETIN | 2010年 / 45卷 / 02期
基金：
美国国家科学基金会;
关键词：
Nanostructures; Optical properties; Chemical synthesis; Electron microscopy; X-ray diffraction; ZNO NANOROD ARRAYS; LARGE-SCALE FABRICATION; SIZE QUANTIZATION; NANOWIRE ARRAYS; FIELD-EMISSION; QUANTUM DOTS; GROWTH; ROUTE; NANOSTRUCTURES; DEPOSITION;
D O I：
10.1016/j.materresbull.2009.09.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Zinc oxide (ZnO) spherical nanoparticles (SNPs) and bitter-melon-like (BML) microparticles were synthesized by a hydrothermal route using a zinc (Zn) plate as a source and substrate at various synthesis conditions. The structural analysis confirmed the formation of ZnO with hexagonal wurtzite phase on the hexagonal Zn substrate with growth of the ZnO microparticles along the [1 0 1] direction. The UV-vis absorption spectra of the ZnO microparticles indicated absorption peaks in the UV region which can be attributed to the band gap of ZnO. The room temperature photoluminescence (PL) of the ZnO microparticles exhibited a broad emission band, which is fitted with four Gaussian peaks and were assigned to transitions involving free excitons and various defect centers. The growth model for the formation of ZnO micro- and nanoparticles is presented. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：190 / 196
页数：7
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