標題: Charge Transfer Luminescence of Several Zirconium-Containing Compounds Using Synchrotron Radiation
作者: Wang, De-Yin
Chen, Teng-Ming
Cheng, Bing-Ming
應用化學系
Department of Applied Chemistry
關鍵字: barium compounds;calcium compounds;charge exchange;doping;europium;photoluminescence;radiation quenching;zirconium compounds
公開日期: 2011
摘要: Photoluminescence properties of pristine and Eu(2+)-doped zirconates, viz. BaZr(PO(4))(2), BaZr(4)(PO(4))(6), Ba(2)Zr(2)Si(3)O(12), and Ca(3)ZrSi(2)O(9), excited by vacuum ultraviolet (VUV) light using synchrotron radiation were studied. The undoped zirconates show self-activated emission in the 300-340 nm region under VUV excitation, which is ascribed to the Zr(4+)-O(2-) charge transfer luminescence. Upon doping Eu(2+) into these compounds, no Eu(2+) emission was observed in the rest of compounds, except for a weak Eu(2+) emission observed in Ba(2)Zr(2)Si(3)O(12):Eu(2+). The quenching of Eu(2+) luminescence is rationalized as the presence of Zr(4+)-Eu(2+) metal-metal charge transfer. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3605475] All rights reserved.
URI: http://hdl.handle.net/11536/25960
http://dx.doi.org/10.1149/1.3605475
ISSN: 1099-0062
DOI: 10.1149/1.3605475
期刊: ELECTROCHEMICAL AND SOLID STATE LETTERS
Volume: 14
Issue: 9
起始頁: J61
結束頁: J63
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