Optical and structural properties of Eu-diffused and doped ZnO nanowires

被引：19

作者：

Pan, C. J. ^{[3
]}

Chen, C. W. ^{[4
]}

Chen, J. Y. ^{[5
]}

Huang, P. J. ^{[4
]}

Chi, G. C. ^{[4
,5
]}

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

Ren, F. ^{[2
]}

Pearton, S. J. ^{[1
]}

机构：

[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

[2] Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA

[3] Natl Cent Univ, Ctr Opt Sci, Tao Yuan 32001, Taiwan

[4] Natl Cent Univ, Dept Phys, Tao Yuan 32001, Taiwan

[5] Natl Cent Univ, Dept Opt & Photon, Tao Yuan 32001, Taiwan

来源：

APPLIED SURFACE SCIENCE | 2009年 / 256卷 / 01期

基金：

美国国家科学基金会;

关键词：

ZnO nanowires; BEAM EPITAXY; GAN; PHOTOLUMINESCENCE; GROWTH; FILMS; TM; NANOCRYSTALS; TEMPERATURE; ER;

D O I：

10.1016/j.apsusc.2009.07.108

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：

Single crystal ZnO nanowires diffused with europium (Eu) from a solid source at 900 degrees C for 1 h or doped with Eu during growth have been characterized. The ZnO nanowires were grown by chemical vapor deposition on Si substrates employing Au as a catalyst. The diameter of the resulting nanowires was similar to 200 nm with a length of 1 mu m. Photoluminescence spectra excited by a He-Cd laser at room temperature showed the green luminescence at 515 nm in Eu-diffused nanowires. A small red shift of near-band-edge emission of ZnO nanowires was observed in the diffused wires, but sharp emission from Eu-3 ions was not present. Transmission electron microscopy shows crystalline Eu2O3 formation on the diffused nanowire surface, which forms a coaxial heterostructure system. When Eu was incorporated during the nanowire growth, the sharp D-5(0)-F-7(2) transition of the Eu3+ ion at around 615 nm was observed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：187 / 190

页数：4

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