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Luminescent properties of Ca 3 SiO 4 Cl 2 co‐doped with Ce 3+ and Eu 2+ for near‐ultraviolet light‐emitting diodes
Author(s) -
Shen Wangqing,
Zhu Yiwen,
Wang Zhengliang
Publication year - 2015
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2922
Subject(s) - phosphor , green light , doping , luminescence , ultraviolet , analytical chemistry (journal) , light emitting diode , ion , materials science , energy transfer , ultraviolet light , chemistry , optoelectronics , blue light , chromatography , organic chemistry , molecular physics
Abstract Ca 3 SiO 4 Cl 2 co‐doped with Ce 3+ ,Eu 2+ was prepared by high temperature reaction. The structure, luminescent properties and the energy transfer process of Ca 3 SiO 4 Cl 2 : 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 Ca 2.9775 SiO 4 Cl 2 :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. Copyright © 2015 John Wiley & Sons, Ltd.