Title of article
UV and green photoluminescence from spark-processed zinc
Author/Authors
Chang، نويسنده , , Sung-Sik and Choi، نويسنده , , G.J. and Park، نويسنده , , H.J. and Stora، نويسنده , , M.E. and Hummel، نويسنده , , R.E.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
6
From page
29
To page
34
Abstract
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.
Keywords
Photoluminescence , XPS , Decay time , Spark-processed Zn
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Serial Year
2001
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Record number
2137248
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