Chinese Optics Letters, 2014, 12 (5): 051602, Published Online: May. 6, 2014
Effects of charge compensation on red emission in CaYAl3O7:Eu3+ phosphor Download: 750次
160.5690 Rare-earth-doped materials 170.6280 Spectroscopy, fluorescence and luminescence 230.3670 Light-emitting diodes
Abstract
Monovalent ions Li+, Na+, and K+, as charge compensators, are introduced into CaYAl3O7: M (M=Eu3+, Ce3+) in this letter. Their crystal phases and photoluminescence properties of different alkali metal ions doped in CaYAl3O7 are investigated. In addition, the influence of charge compensation ion Li+ which has a more obvious role in improving luminescence intensity on CaYAl3O7: Eu3+ phosphor is intentionally discussed in detail and a possible mechanism of charge compensation is given. The enhancement of red emission centered at 618 nm belonging to Eu3+ is achieved by adding alkali metal ion Li+ under 393-nm excitation.
Hongling Yu, Xue Yu, Xuhui Xu, Qing Jiao, Tingming Jiang, Xuee Liu, Dacheng Zhou, Jianbei Qiu. Effects of charge compensation on red emission in CaYAl3O7:Eu3+ phosphor[J]. Chinese Optics Letters, 2014, 12(5): 051602.