Luminescent properties of Ca3SiO4Cl2 co-doped with Ce(3+) and Eu(2+) for near-ultraviolet light-emitting diodes.
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.
['Shen|Wangqing|W|', 'Zhu|Yiwen|Y|', 'Wang|Zhengliang|Z|']
D002563:Cerium D004735:Energy Transfer D005063:Europium D049449:Luminescence D049408:Luminescent Agents D014466:Ultraviolet Rays
luminescent properties Ca3SiO4Cl2 light-emitting diodes phosphor