Optimized photoluminescence of red phosphor K_(2)LiAlF_(6):Mn^(4+)synthesized by a cation-exchange method  

作　　者：ZHU YiWen LIU Yong HUANG Lin XUAN TongTong WANG Jing 

机构地区：[1]Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry,State Key Laboratory of Optoelectronic Materials and Technologies,KLGHEI of Environment and Energy Chemistry,School of Chemistry,Sun Yat-sen University,Guangzhou 510275,China [2]Guzhen Productivity Promotion Center,Zhongshan 528400,China

出　　处：《Science China(Technological Sciences)》2017年第10期1458-1464,共7页中国科学（技术科学英文版）

基　　金：the National Basic Research Program of China(Grant No.2014CB643801);the National Natural Science Foundation of China(Grant Nos.51572302 and 21271191);the Joint Funds of the National Natural Science Foundation of China and Guangdong Province(Grant No.U1301242);Teamwork Projects of Guangdong Natural Science Foundation(Grant No.S2013030012842);Guangdong Science&Technology Project(Grant No.2015B090926011);the Natural Science Foundation of Guangdong Province(Grant No.2014A030313114);China Postdoctoral Science Foundation(Grant No.2014M562237)

摘　　要：Red phosphor K2LiA1F6：Mn4＋ has been synthesized by a cation-exchange method in HF solution. To optimize their optical properties, phosphors were synthesized using different reaction conditions. The K2LiA1F6：0.5%Mn4＋ synthesized at 20℃ for 4 h shows the highest luminescence intensity. The temperature-dependent emission intensity of the phosphor was investigated, and it was found to exhibit good thermal stability, making it a promising red phosphor candidate for warm WLEDs.

关 键 词：PHOTOLUMINESCENCE red phosphor K_(2)LiAIF_(6):Mn^(4+) cation-exchange method 

分 类 号：TQ422[化学工程]