Luminescent properties of Ca3SiO4Cl2 co‐doped with Ce3+ and Eu2+ for near‐ultraviolet light‐emitting diodes |
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| Authors: | Wangqing Shen Yiwen Zhu Zhengliang Wang |
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| Institution: | 1. College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang, Sichuan, 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, People's Republic of China |
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| Abstract: | Ca3SiO4Cl2 co‐doped with Ce3+,Eu2+ was prepared by high temperature reaction. The structure, luminescent properties and the energy transfer process of Ca3SiO4Cl2: Ce3+,Eu2+ were investigated. Eu2+ ions can give enhanced green emission through Ce3+ → Eu2+ energy transfer in these phosphors. The green phosphor Ca2.9775SiO4Cl2:0.0045Ce3+,0.018Eu2+ 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. |
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| Keywords: | luminescent properties phosphor light‐emitting diodes Ca3SiO4Cl2 |
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