文献类型：会议论文

英文题名：Photoluminescence of undoped and B-doped ZnO in silicate glasses

作者：Ding, Lihua[1];Yang, Yunxia[1];Jiang, Xiongwei[2,3];Zhu, Congshan[2,3];Chen, Guorong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat Minist Educ, Shanghai 200237, Peoples R China;[2]China Acad Sci, Shanghai Inst Opt & Fine Mech, Photon Craft Project, Shanghai 201800, Peoples R China;[3]Japan Sci & Technol Agcy, Shanghai 201800, Peoples R China

会议论文集：Joint Conference of the International Symposium on Glass/Annual Meeting of the International-Commission-on-Glass

会议日期：APR 10-14, 2005

会议地点：Shanghai, PEOPLES R CHINA

语种：英文

外文关键词：optical properties; luminescence; oxide glasses; silicates

摘要：Photoluminescence of undoped and B-doped ZnO in silicate glasses was investigated by varying the concentration of ZnO (3550 mol%) and B dopant (0-10 mol%) in the glass matrices. The broad and intense near band edge emissions were observed while the visible light emission was very weak. UV luminescence in all samples was red-shifted relative to the exciton transition in bulk ZnO and enhanced by decreased ZnO concentration due to higher degree of structural integrity and the lower aggregation degree of ZnO. Donor B dopant played the double roles of filling conduction bands to broaden band gap when its concentration was lower than 5 mol%, and emerging with conduction bands to narrow the gap when B dopant exceeded this value. (c) 2007 Elsevier B.V. All rights reserved.