Jang, Ho Seong Kim, Hyun You Kim, Yang-Soo Lee, Hyuck Mo Jeon, Duk Young 2024-01-20T15:33:03Z 2024-01-20T15:33:03Z 2021-09-05 2012-01-30 1094-4087 https://pubs.kist.re.kr/handle/201004/129628 A new yellow-emitting gamma-Ca2SiO4:Ce3+, Li+ phosphor was synthesized via a solid-state reaction. The phosphor showed a strong yellow emission with a wide bandwidth of 135.4 nm under blue light excitation. Absorption and photoluminescence measurements and density functional theory calculations suggest that the luminescence of the phosphor can be attributed primarily to the transitions of 5d -> 4f (F-2(7/2) and F-2(5/2)) of Ce3+ ions occupying Ca(1) sites in the host crystal. White light-emitting diodes (LEDs) were fabricated by combining this phosphor with a blue LED, and excellent white light with a high color rendering index of 86 was created owing to the wide emission bandwidth of the phosphor. (C) 2012 Optical Society of America English OPTICAL SOC AMER EMISSION SILICATE PHOTOLUMINESCENCE COLOR CE3+ SR3SIO5-CE3+ NANOCRYSTALS SUBSTITUTION BLUE Yellow-emitting gamma-Ca2SiO4:Ce3+, Li+ phosphor for solid-state lighting: luminescent properties, electronic structure, and white light-emitting diode application Article 10.1364/OE.20.002761 1 OPTICS EXPRESS, v.20, no.3, pp.2761 - 2771 OPTICS EXPRESS 20 3 2761 2771 scie scopus 000300499500081 2-s2.0-84863011713 Optics Optics Article EMISSION SILICATE PHOTOLUMINESCENCE COLOR CE3+ SR3SIO5-CE3+ NANOCRYSTALS SUBSTITUTION BLUE Phosphor white LED photoluminescence