LiCa3MgV3O12:Sm3+: A new high-efficiency white-emitting phosphor |
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Authors: | Xiaoyong Huang Heng Guo |
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Affiliation: | Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, PR China |
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Abstract: | A novel single-phased white-light-emitting phosphor Sm3+ doped LiCa3MgV3O12 (LCMV) was developed. The LCMV host was one self-activated bluish-green emitting phosphor, which possessed an efficient excitation band in the 250–400?nm wavelength range and showed an intense broadband bluish-green emission with internal quantum efficiency (IQE) of 39%. Doping Sm3+ ions in to LCMV host induced tunable-color emissions, due to the energy transfer from VO4]3? to Sm3+ ions. Importantly, under 340?nm excitation, the LCMV:Sm3+ can emitted bright white light by combining the self-activated luminescence of LCMV host and the red emissions of Sm3+ ions, and the IQE of the white-emitting composition-optimized LCMV:0.01Sm3+ phosphors reached up to 45%. These white-emitting LCMV:Sm3+ phosphors have potential applications in white light-emitting diodes and optical display devices. |
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Keywords: | Phosphors Rare-earth Photoluminescence Energy transfer White emissions |
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