Surface-treatment of Alkaline Earth Sulfides Based Phosphor

Chemical Research in Chinese Universities ›› 2004, Vol. 20 ›› Issue (3): 253-257.

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Surface-treatment of Alkaline Earth Sulfides Based Phosphor

GUO Chong-feng, CHU Ben-li, XU Jian, SU Qiang

State Key laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Yat-sen Sun University, Guangzhou 510275, P. R. China

Received:2003-06-26 Online:2004-06-24 Published:2011-08-06
Supported by:
Supported by the National Natural Science Foundation of China(No.20171046) and the Natural Science Foundation of Guangdong Province(No.21423452).

Abstract

Abstract: A series of alkaline earth sulfides based phosphors Ca_0.8Sr_0.2S∶Eu²⁺, Tm³⁺ were covered with a layer of protective coating with alkaline earth fluorides by heating the mixture of phosphor and NH₄HF₂ at elevated temperatures. The coatings were characterized by means of XRD and SEM. The optical properties of the coated phosphors and the influences of the coating on their properties have been discussed extensively. The stabilities of the coated and uncoated phosphors have been compared.

Key words: Alkaline earth sulfides, Phosphor, Coating

GUO Chong-feng, CHU Ben-li, XU Jian, SU Qiang . Surface-treatment of Alkaline Earth Sulfides Based Phosphor[J]. Chemical Research in Chinese Universities, 2004, 20(3): 253-257.

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Surface-treatment of Alkaline Earth Sulfides Based Phosphor

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