Self-reduction of Yb3+ to Yb2+ and red persistent luminescence of Na2CaGe2O6:Yb2+ phosphor
作者： Zhidong Ma , Shicheng Tian , Hao Wu , Jiachi Zhang , Huihui Li
DOI: 10.1016/J.CERAMINT.2018.05.078
关键词:
摘要: Abstract Phosphors are luminescent materials that widely used in the lighting and displays of today's world. A reduction-atmosphere is commonly to synthesize efficient broadband phosphors activated by divalent rare earth ions. In this work, we first report unusual self-reduction Yb 3+ 2+ air Na 2 CaGe O 6 (NCGO), which shows red persistent luminescence (PersL). The effect revealed be associated with appropriate structure NCGO. On basis investigations, summarize basic structural conditions mechanisms effect. This important finding will enlighten us a new approach for designing germanate PersL phosphors. addition, properties NCGO:Yb also investigated.
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