掺Bi(2+)的硫酸钡作为白光发光二极管红色荧光粉的光致发光

Photoluminescence of Bi(2+)-doped BaSO4 as a red phosphor for white LEDs.

作者信息

Cao Renping, Peng Mingying, Qiu Jianrong

机构信息

State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510640, China.

出版信息

Opt Express. 2012 Nov 5;20(23):A977-83.

PMID:23326845

Abstract

Bi(2+)-doped BaSO(4) phosphor was synthesized in air via solid state reaction method. Three excitation bands and one emission band were observed at 260 nm ((2)P(1/2) → (2)S(1/2)), 452 nm ((2)P(1/2) → (2)P(3/2)(2)), 592 nm ((2)P(1/2) → (2)P(3/2)(1)), and 627 nm ((2)P(3/2)(1) → (2)P(1/2)), respectively. W-LEDs were demonstrated by using a blend composition of BaSO(4):Bi(2+) and YAG:Ce(3+) phosphors pumped with a 455 nm blue LEDs chip. The results indicate that BaSO(4):Bi(2+) phosphor is suitable as potential red phosphor for application in W-LEDs excited with blue LEDs chip.

摘要

通过固态反应法在空气中合成了Bi(2+)掺杂的BaSO(4)荧光粉。观察到三个激发带和一个发射带，分别位于260 nm（(2)P(1/2) → (2)S(1/2)）、452 nm（(2)P(1/2) → (2)P(3/2)(2)）、592 nm（(2)P(1/2) → (2)P(3/2)(1)）和627 nm（(2)P(3/2)(1) → (2)P(1/2)）。通过使用由BaSO(4):Bi(2+)和YAG:Ce(3+)荧光粉组成的混合物，并由455 nm蓝色发光二极管芯片泵浦，展示了白光发光二极管。结果表明，BaSO(4):Bi(2+)荧光粉适合作为潜在的红色荧光粉应用于由蓝色发光二极管芯片激发的白光发光二极管中。