Photoluminescence properties: Catalyst-free ZnO nanorods and layers versus bulk ZnO

被引：27

作者：

Al-Suleiman, M. ^{[1
]}

Mofor, A. Che ^{[1
]}

El-Shaer, A. ^{[1
]}

Bakin, A. ^{[1
]}

Wehmann, H. -H. ^{[1
]}

Waag, A. ^{[1
]}

机构：

[1] Tech Univ Braunschweig, Inst Semicond Technol, D-38106 Braunschweig, Germany

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 23期

关键词：

D O I：

10.1063/1.2399349

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this contribution, we compare the photoluminescence properties of ZnO nanorods and epilayers with those of bulk ZnO. Owing to the high aspect ratio (length of 4-14 mu m, diameter of 80-500 nm), the characterized ZnO nanorods show very good optical properties. Due to the high surface-to-volume ratio in ZnO nanorods, surface excitons dominate at low temperature. The optical properties of nanorod ensembles improve with increasing nanorod length. The photoluminescence emission from free A excitons was intense in the ZnO layer at 13 K. (c) 2006 American Institute of Physics.

引用

页数：3

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