Observation of two-photon-induced photoluminescence in ZnO microtubes

被引：44
|
作者：
Zhang, CF [1 ]
Dong, ZW
You, GJ
Qian, SX
Deng, H
Gao, H
Yang, LP
Li, Y
机构：
[1] Fudan Univ, State Key Lab Surface Phys, Dept Phys, Shanghai 200433, Peoples R China
[2] Univ Elect Sci & Technol China, Sch Microelect & Solid State Elect, Chengdu 610054, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 05期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.1996848
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The micrometer-sized ZnO tubes were fabricated by a hydrothermal method and characterized by scanning electron microscopy, high resolution transmission microscopy and micro-Raman spectroscopy. Photoluminescence (PL) emission from ZnO microtubes excited by light in the ultraviolet range from xenon lamp was measured. By using nanosecond laser beam at 527 nm to excite ZnO microtube, we observed two-photon induced PL emission with an intense peak at 3.15 eV and a weak peak at 2.65 eV, which was confirmed by the quadratic dependence of the emission intensity on the excitation power. (c) 2005 American Institute of Physics.
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页数：3
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