Size-Controlled Synthesis and Optical Properties of Small-Sized ZnO Nanorods

被引：86

作者：

Chen, Y. W. ^{[1
]}

Qiao, Q. ^{[1
]}

Liu, Y. C. ^{[1
]}

Yang, G. L. ^{[2
]}

机构：

[1] NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Key Lab UV Light Emitting Mat & Technol, Minist Educ, Changchun 130024, Peoples R China

[2] Drexel Univ, Dept Phys, Philadelphia, PA 19104 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 18期

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

THIN-FILMS; CONTROLLED GROWTH; AQUEOUS-SOLUTIONS; ARRAYS; NANOWIRES; PHOTOLUMINESCENCE; DEPOSITION; NANOBELTS; ROUTE;

D O I：

10.1021/jp809778w

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

One-dimensional ZnO nanorods with very small diameters in the range of 10 +/- 2 nm were fabricated by facile sol-gel and hydrothermal methods. The structural, morphologic and optical properties of ZnO nanorods were investigated using X-ray diffraction, electron microscopy, and photoluminescence (PL). A strong ultraviolet (UV) near-band-edge emission peak at 373 nm (3.32 eV) was observed, while the deep-level emission band was too weak to observe at room temperature. The UV emission peak has an obvious blue shift compared to the samples with a larger size, which was attributed to the size-decreased nanorods. The large ratio of the UV emission to visible emissions in PL spectra can be obtained in small-sized ZnO nanorods. Furthermore, the morphologic and optical properties of ZnO nanorods can be adjusted by controlling the reactant concentration and reaction time. The possible growth mechanism of the nanorods is proposed.

引用

页码：7497 / 7502

页数：6

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