Luminescent Properties of Sr4Si3O8Cl4:Eu2+, Bi3+ Phosphors for Near UV InGaN-Based Light-Emitting-Diodes

Applied Sciences

Wangqing Shen¹  Yiwen Zhu²  Zhengling Wang² 

[1] College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang 641112, China; E-Mail:;Key Laboratory of Comprehensive Utilization of Mineral Resources in Ethnic Regions, Joint Research Centre for International Cross-Border Ethnic Regions Biomass Clean Utilization in Yunnan, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500, China; E-Mail:

关键词: luminescent properties;    phosphors;    light-emitting diodes;    Sr₄Si₃O₈Cl₄;   

DOI  :  10.3390/app5041494

来源: mdpi

【 摘 要 】

Sr₄Si₃O₈Cl₄ co-doped with Eu²⁺, Bi³⁺ were prepared by the high temperature reaction. The structure and luminescent properties of Sr₄Si₃O₈Cl₄:Eu²⁺, Bi³⁺ were investigated. With the introduction of Bi³⁺, luminescent properties of these phosphors have been optimized. Compared with Sr_3.90Si₃O₈Cl₄:0.10Eu²⁺, the blue-green phosphor Sr_3.50Si₃O₈Cl₄:0.10Eu²⁺, 0.40Bi³⁺ shows stronger blue-green emission with broader excitation in near-UV range. Bright blue-green light from the LED means this phosphor can be observed by the naked eye. Hence, it may have an application in near UV LED chips.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.