Yellow-emitting γ-Ca2SiO4:Ce3+, Li+ phosphor for solid-state lighting: luminescent properties, electronic structure, and white light-emitting diode application

Optics Express
Ho Seong JangDuk Young Jeon

Abstract

A new yellow-emitting γ-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 (2F(7/2) and 2F(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.

Citations

Apr 20, 2016·ACS Applied Materials & Interfaces·Dawei WenMasato Kakihana
Aug 8, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Zhijuan LuDajian Wang
Nov 11, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Yan GaoTao Yang

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