UV and green photoluminescence from spark-processed zinc

被引：22

作者：

Chang, SS ^{[1
]}

Choi, GJ

Park, HJ

Stora, ME

Hummel, RE

机构：

[1] Kangnung Natl Univ, Dept Ceram Engn, Kangwondo 210702, Kangnung, South Korea

[2] Korea Inst Sci & Technol, Clean Technol Res Ctr, Seoul 130650, South Korea

[3] Hankuk Univ Foreign Studies, Fac Nat Sci, Seoul 130791, South Korea

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

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2001年 / 83卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

decay time; photoluminescence; spark-processed Zn; XPS;

D O I：

10.1016/S0921-5107(00)00799-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoluminescence (PL) and scanning electron microscopy studies (SEM) have been performed on spark-processed zinc (sp-Zn). Furthermore, temperature-dependent PL spectra, decay dynamics, and X-ray photoelectron spectroscopy (XPS) have been taken. The area just below the spark-processing electrode is highly fragmented and heavily oxidized. The PL spectrum of sp-Zn peaks at 3.3 eV, that is, in the UV spectral range. and has the characteristics of the band-gap emission of bulk ZnO. Further, the surrounding area of sp-Zn displays a green PL having a maximum intensity near 2.3 eV. The green luminescence band of sp-Zn shows an unusual red shift in the PL peak energy with decreasing temperature. The possible mechanisms causing the observed PL properties of sp-Zn are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：29 / 34

页数：6

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