Visible photoluminescence in ZnO tetrapod and multipod structures

被引：150

作者：

Djurisic, AB

Leung, YH

Choy, WCH

Cheah, KW

Chan, WK

机构：

[1] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[2] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China

[3] Hong Kong Baptist Univ, Dept Phys, Kowloon Tong, Hong Kong, Peoples R China

[4] Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 14期

关键词：

D O I：

10.1063/1.1695633

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The properties of ZnO tetrapod and multipod structures were investigated using scanning electron microscopy, x-ray diffraction, photoluminescence (PL), and electron paramagnetic resonance (EPR) spectroscopy. While there is relationship between g=1.96 EPR and green PL in some of the samples, this is not the case for all the samples. Therefore, the commonly assumed transition between a singly charged oxygen vacancy and photoexcited hole [K. Vanheusden, C. H. Seager, W. L. Warren, D. R. Tallant, and J. A. Voigt, Appl. Phys. Lett. 68, 403 (1996)] does not explain the green emission in all ZnO samples. The green emission likely originates from surface defects. (C) 2004 American Institute of Physics.

引用

页码：2635 / 2637

页数：3

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