EFFECT OF THE GREEN-EMITTING CaF2:Ce3+,Tb3+ PHOSPHORPARTICLES’ SIZE ON COLOR RENDERING INDEX AND COLOR QUALITYSCALE OF THE IN-CUP PACKAGING MULTICHIP WHITE LEDs

[摘要] In this paper, we investigate the effect of the green-emitting CaF2:Ce3+,Tb3+ phosphorparticle’s size on the color rendering index (CRI) and the color quality scale (CQS) of thein-cup packaging multichip white LEDs (MCW-LEDs). For this purpose, 7000K and8500K in-cup packaging MCW-LEDs is simulated by the commercial software LightTools. Moreover, scattering process in the phosphor layers is investigated by using MieTheory with Mat Lab software. Finally, the research results show that the green-emittingCaF2:Ce3+,Tb3+ phosphor’s size crucially influences on the CRI and CQS. From that pointof view, CaF2:Ce3+,Tb3+ can be proposed as a potential practical direction formanufacturing the in-cup packaging phosphor WLEDs.

[学科分类] 生物技术

[关键词] WLEDs;Green-emitting;CaF2:Ce3+;Tb3+ phosphor;CRI;CQS;Mie Theory