The reduction of Cu2+ to Cu+ and optical properties of Cu+ ions in Cu-doped and Cu/Al-codoped high silica glasses sintered in an air atmosphere

被引：70
|
作者：
Zhang, Qiang [1 ,2 ]
Chen, Guorong [3 ]
Dong, Guoping [1 ,2 ]
Zhang, Guang [1 ,2 ]
Liu, Xiaofeng [1 ,2 ]
Qiu, Jianrong [4 ]
Zhou, Qinling [1 ]
Chen, Qingxi [1 ]
Chen, Danping [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat Sci & Technol High Power Lasers, Shanghai 201800, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[3] E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China
[4] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2009年 / 482卷 / 4-6期
关键词：
ABSORPTION SPECTRA; NANOPOROUS GLASS; CUPRIC ION; COPPER; SPECTROSCOPY; DECOMPOSITION; LUMINESCENCE; CATALYSTS; ZEOLITES; EMISSION;
D O I：
10.1016/j.cplett.2009.09.105
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：
Cu-doped and Cu/Al-codoped high silica glasses (HSGes) are prepared by doping Cu2+ ions or codoping Cu2+ ions and Al3+ ions in porous glasses and then sintering at 1200 degrees C in air and the reduction of Cu2+ ions is observed in Cu/Al-codoped HSGes. With increasing the Al/Cu molar ratio, the color of the samples changes from brown to colorless gradually. Strong and broad glaucous emission from the monomer and dimmer Cu+ ions are observed when exciting the colorless samples with ultraviolet light. Absorption, photoluminescence, electron spin resonance (ESR) spectra and X-ray photoelectron spectroscopy (XPS) are carried out to investigate this phenomenon. The mechanism of this change is presented. (C) 2009 Elsevier B. V. All rights reserved.
引用
收藏
页码：228 / 233
页数：6
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