White light luminous properties and energy transfer mechanism of rare earth ions in Ce3+/Tb3+/Sm3+ co-doped glasses

• DOI: 10.1007/s00339-013-7995-6
• Publication Date: 2013-10-22T19:26:11Z
• Authors: Qiaoqiao Chen; Nengli Dai; Zijun Liu; Yingbo Chu; Baoyuan Ye; Haiqing Li; Jinggang Peng; Zuowen Jiang; Jinyan Li; Fang Wang; Luyun Yang
• Keywords: Color rendering index; Luminous efficacy; Borosilicate glass; Color temperature; Photon Upconversion

We report on a kind of Ce3+/Tb3+/Sm3+ co-doped borosilicate glasses which can emit white light luminescence combined with red, green and blue fluorescence. In this manuscript, the energy transfer mechanism between Ce3+ and Tb3+ ions, Ce3+ and Sm3+ ions, and Tb3+ and Sm3+ ions is discussed by analysis of the steady and transient luminescence spectra of the doped ions. Based on the energy transfer mechanism, the near-ideal white light emission from the Ce3+/Tb3+/Sm3+ co-doped glasses with the color coordinate (x=0.335, y=0.337) has been observed under 350-nm excitation. Meanwhile, the calculated parameters such as color rendering index (78–81) and color temperature (4717–5372 K), characterizing luminous properties, show that the glasses can be potential candidates for displays and lighting.