Novel optical characteristics of Eu2+ doped and Eu2+, Ce3+ co-doped LiSi2N3 phosphors by gas-pressed sintering
作者： Quansheng Wu , Yanyan Li , Xicheng Wang , Zhengyan Zhao , Chuang Wang
DOI: 10.1039/C4RA05502K
关键词:
摘要: Eu2+ doped and Eu2+, Ce3+ co-doped LiSi2N3 phosphors were successfully prepared by gas-pressed sintering in this study. The dominant excitation band of LiSi2N3:Eu2+ was found at about 355 nm exhibited a broad-band yellow emission centered 592 instead the early reports 310 580 nm, respectively. shifting behavior dominantly contributed to different oxygen content host. second luminescent center formed introduction into nitride discussed detail. detailed energy transfer mechanism from host is also reported notable unusual redshift observed phosphors.
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