文献类型：期刊文献

英文题名：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

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

年份：2009

卷号：482

期号：4-6

起止页码：228

外文期刊名：CHEMICAL PHYSICS LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000271265200010)】；

语种：英文

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.