作者: Yang Kuisheng , Zheng Fang , Wu Rina , Li Hansheng , Zhang Xiyan
DOI: 10.1016/S1002-0721(07)60350-0
关键词:
摘要: … + to Er3+ increases, the up-conversion luminescent intensity becomes stronger and stronger till the proportion of Yb3+ to Er3+ achieves to 7 : 1 . Then the luminescent intensity begins …