Luminescent characteristics of LiCaBo3:M (M=Eu, Sm, Tb, Ce, Dy) phosphor for white LED |
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Authors: | Panlai Li Zhijun Wang Zhiping Yang Qinglin Guo Xu Li |
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Institution: | College of Physics Science and Technology, Hebei University, Baoding 071002, China |
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Abstract: | LiCaBO3:M (M=Eu3+, Sm3+, Tb3+, Ce3+, Dy3+) phosphors were synthesized by a normal solid-state reaction using CaCO3, H3BO3, Li2CO3, Na2CO3, K2CO3, Eu2O3, Sm2O3, Tb4O7, CeO2 and Dy2O3 as starting materials. The emission and excitation spectra were measured by a SHIMADZU RF-540 UV spectrophotometer. And the results show that these phosphors can be excited effectively by near-ultraviolet light-emitting diodes (UVLED), and emit red, green and blue light. Consequently, these phosphors are promising phosphors for white light-emitting diodes (LEDs). Under the condition of doping charge compensation Li+, Na+ and K+, the luminescence intensities of these phosphors were increased. |
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Keywords: | White LED LiCaBO3:M (M=Eu3+ Sm3+ Tb3+ Ce3+ Dy3+) Photoluminescence |
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