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Low thermal quenching and high-efficiency Ce, Tb-co-doped Ca3Sc2Si3O12 green phosphor for white light-emitting diodes |
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| Authors: | Yibo Chen Kok Wai Cheah |
| Affiliation: | a School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China b State Key Laboratory of Optoelectronic Materials and Technologies, Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China c Department of Physics, Hong Kong Baptist University, Hong Kong, China |
| Abstract: | Low thermal quenching and high-efficiency Ca3Sc2Si3O12:Ce3+ (CSSO:Ce3+) phosphors with co-doping Tb3+ ion were prepared by a solid state method and the properties of these phosphors were investigated. The results showed that co-doping of Tb3+ not only enhances the photoluminescence remarkably and decreases the thermal quenching of the phosphor, but also heightens the performances of the LEDs fabricated with the phosphor. A high-efficiency and low color temperature white LED was fabricated with the prepared CSSO:1%Ce3+, 0.5%Tb3+ and a red phosphor, indicating that CSSO:1%Ce3+,0.5%Tb3+ phosphor is a suitable green phosphor for the fabrication of high-efficiency white LEDs. |
| Keywords: | LED Phosphor Ca3Sc2Si3O12:Ce3+ Co-doping |
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