Luminescent properties of Ca3SiO4Cl2 co-doped with Ce(3+) and Eu(2+) for near-ultraviolet light-emitting diodes

Wangqing Shen; Yiwen Zhu; Zhengliang Wang

doi:10.1002/bio.2922

Luminescent properties of Ca3SiO4Cl2 co-doped with Ce(3+) and Eu(2+) for near-ultraviolet light-emitting diodes

Luminescence. 2015 Dec;30(8):1409-12. doi: 10.1002/bio.2922. Epub 2015 Apr 19.

Authors

Wangqing Shen¹, Yiwen Zhu², Zhengliang Wang²

Affiliations

¹ College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang, Sichuan, 641112, People's Republic of China.
² Engineering Research Center of Biopolymer Functional Materials of Yunnan, School of Chemistry and Biotechnology, Yunnan Minzu University, Kunming, Yunnan, 650500, People's Republic of China.

PMID: 25892443
DOI: 10.1002/bio.2922

Abstract

Ca3SiO4Cl2 co-doped with Ce(3+),Eu(2+) was prepared by high temperature reaction. The structure, luminescent properties and the energy transfer process of Ca3SiO4Cl2:Ce(3+),Eu(2+) were investigated. Eu(2+) ions can give enhanced green emission through Ce(3+) → Eu(2+) energy transfer in these phosphors. The green phosphor Ca2.9775SiO4Cl2:0.0045Ce(3+),0.018Eu(2+) showed intense green emission with broader excitation in the near-ultraviolet light range. A green light-emitting diode (LED) based on this phosphor was made, and bright green light from this green LED could be observed by the naked eye under 20 mA current excitation. Hence it is considered to be a good candidate for the green component of a three-band white LED.

Keywords: Ca3SiO4Cl2; light-emitting diodes; luminescent properties; phosphor.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Cerium / chemistry*
Energy Transfer
Europium / chemistry*
Luminescence
Luminescent Agents / chemistry*
Ultraviolet Rays

Substances

Luminescent Agents
Cerium
Europium