期刊
OPTICS LETTERS
卷 34, 期 24, 页码 3833-3835出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.34.003833
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资金
- National Basic Research Program of China [2007CB935502, 2010CB327704]
- National Natural Science Foundation of China (NSFC) [60977013, 50702057, 50872131, 20921002]
Nanocrystalline LaOCl:Tb3+/Sm3+ phosphors were synthesized by a Pechini-type sol-gel process. Under UV and electron-beam excitation, LaOCl:Tb3+/Sm3+ show the characteristic emission of Tb3+ (D-5(3,4) -> F-7(6), ... (2)) and Sm3+ ((4)G(5/2) -> H-6(5/2),(7/2),(9/2)), respectively. In particular, the cathodoluminescence (CL) color of LaOCl:Tb3+ can be tuned from blue to green by changing Tb3+-doped concentration, and their CL intensities (brightness) are higher than those of commercial products Y2SiO5:Ce3+ and ZnO:Zn, respectively. White CL can be realized by codoping with Tb3+ and Sm3+ in a single-phase LaOCl host. The obtained white light is very close to the standard white light. These phosphors are promising for application in field-emission displays. (C) 2009 Optical Society of America
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