Catalyst-free pulsed-laser-deposited ZnO nanorods and their room-temperature photoluminescence properties

被引：103

作者：

Liu, ZW ^{[1
]}

Ong, CK

Yu, T

Shen, ZX

机构：

[1] Natl Univ Singapore, Dept Phys, Ctr Supercond & Magnet Mat, Singapore 117542, Singapore

[2] Nanyang Technol Univ, Div Phys & Appl Phys, Singapore 637616, Singapore

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 05期

关键词：

D O I：

10.1063/1.2168675

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

ZnO nanorods with various diameters were synthesized on both sapphire and silicon substrates by a pulsed-laser-deposition technique without a catalyst using relatively high background oxygen pressure (5-20 Torr) and substrate temperature (550 degrees C-700 degrees C). The photoluminescence (PL) properties of the nanorods were investigated. The difference in PL emission intensity for the samples produced at various oxygen pressures has been attributed to the size difference and surface status of the nanorods. The increased deep level emission with increasing temperature resulted from the size difference and increasing oxygen evaporating. The effect of substrate nature on the PL property has also been investigated. (c) 2006 American Institute of Physics.

引用

页码：1 / 3

页数：3

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