文献类型：期刊文献

英文题名：Expanded and Enhanced Deep-UV Excitations of Mn2+-Doped Phosphate Glasses Sensitized by Gd3+ Ions

作者：Xia, Fanshu[1];Liu, Yinyao[1];Wang, Yiqun[1];Chen, Guorong[1]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：98

期号：9

起止页码：2720

外文期刊名：JOURNAL OF THE AMERICAN CERAMIC SOCIETY

收录：;EI(收录号：20153001062625);WOS:【SCI-EXPANDED(收录号:WOS:000362229400012)】；

基金：This study was supported by Shanghai Leading Academic Discipline Project (no. B502), Shanghai Key Laboratory Project (08DZ2230500) and Research Funds for the Doctoral Program by Ministry of Education of China (20120074110018).

语种：英文

外文关键词：Energy harvesting - Glass - Energy transfer

摘要：Mn2+-doped phosphate glasses sensitized by Gd3+ ions are investigated. Enhanced photoluminescence (PL) properties of the samples are found with the excitations expanding toward the deep-UV part of the spectrum. PL emission and excitation spectra correlated with the lifetime data consistently present evidences of the enhanced Mn2+ emission in association with the energy transfer from Gd3+ ions. In particular, the Gd3+ codoping benefits greatly the energy harvesting of Mn2+ ions, resulting in the enhanced and tunable excitations of Mn2+ ions which expand toward the deep-UV part of the spectrum at 273 and 311nm, respectively. Thus by Gd3+ sensitizing, the excitation source of the Mn2+ emission has covered the broad range of the spectrum from the original blue and near-UVA to the deep-UVB and UVC together with the enhanced emission in the green-to-red spectral region. The possible energy-transfer mechanisms involved are discussed.