论文部分内容阅读
K2Ba(MoO4)2:Eu3+ phosphors were synthesized by solid-state reaction. The emission and excitation spectra of K2 Ba(MoO4)2:Eu3+ phosphors exhibited that the phosphors could be effectively excited by near ultraviolet (394 nm) and blue (465 nm) light, and emitted red light at 616 nm. The influence of Eu3+concentration, sintering temperature and charge compensators (K+, Na+ or Li+ ) on the emission intensity were investigated. The results indicated that concentration quenching of Eu3+ was not observed within 30mol.% Eu 3+, 600 oC was a suitable sintering temperature for preparation of K2 Ba(MoO4)2:Eu3+phosphors, and K+ ions gave the best improvement to enhance the emission intensity. The CIE chromaticity coordinates of K2 Ba(MoO4)2:0.05Eu3+phosphor were calculated to be (0.68, 0.32), and color purity was 97.4%.
The emission and excitation spectra of K2 Ba (MoO4) 2: Eu3 + phosphors showed that the phosphors could be able to be excited by near ultraviolet (394 nm) and blue (465 The influence of Eu3 + concentration, sintering temperature and charge compensators (K +, Na + or Li +) on the emission intensity were investigated. The results indicates that concentration quenching of Eu3 + was not observed within The CIE chromaticity coordinates of K2 Ba (MoO4) 2: Eu3 + phosphors, and K + ions gave the best improvement to enhance the emission intensity. ) 2: 0.05Eu3 + phosphor were calculated to be (0.68, 0.32), and color purity was 97.4%.