Structural characterization and optical properties of long-lasting CaAl2O4：Eu2＋,Nd3＋ phosphors synthesized by microwave-assisted chemical co-precipitation  

作　　者：余媛 王建 王纪冬 李婧 朱亚楠 李晓强 宋晓蕾 葛明桥 

机构地区：[1]Key Laboratory of Eco- Textile of Ministry of Education, College of Textiles and Clothing, Jiangnan University, Wuxi 214122, China

出　　处：《Journal of Rare Earths》2017年第7期652-657,共6页稀土学报（英文版）

基　　金：Project supported by the Fundamental Research Funds for the Central Universities(JUSRP51723B);National Natural Science Foundation of China(51503083);Jiangsu Province Ordinary University Academic Degree Graduate Student Scientific Research Innovation Projects(KYLX16_0798);the Priority Academic Program Development of Jiangsu Higher Education Institutions;Production,Education&Research Cooperative Innovation Fund Project of Jiangsu Province(BY2015057-23)

摘　　要：The present paper reported the structural and luminescent properties of Eu^（2＋） and Nd^（3＋） doped CaAl_2O_4 phosphor. The samples were prepared by microwave-assisted chemical co-precipitation（MA-CCP）, a synthesis technique which is suitable for small and uniform particle that could be used directly without grinding. The effects of different microwave temperatures on structure and photoluminescence behavior were studied. Formation of a phosphor and phase purity were confirmed by X-ray diffraction technique（XRD） with variable microwave temperatures. XRD analysis showed that the phosphors prepared by MA-CCP method at the temperature of 750, 900oC, respectively and solid-state reaction（SSR） method at 1300oC consisted of impurities. Commission Internationale de L＇Eclairage（CIE） color coordinates of CaAl_2O_4：Eu^（2＋）,Nd^（3＋） were suitable as blue light emitting phosphor. Excitation and emission peaks of the samples prepared by different methods in this study were almost the same. The images of SEM showed that the size of the phosphors prepared by MA-CCP method reached a submicrometer.The present paper reported the structural and luminescent properties of Eu^（2＋） and Nd^（3＋） doped CaAl_2O_4 phosphor. The samples were prepared by microwave-assisted chemical co-precipitation（MA-CCP）, a synthesis technique which is suitable for small and uniform particle that could be used directly without grinding. The effects of different microwave temperatures on structure and photoluminescence behavior were studied. Formation of a phosphor and phase purity were confirmed by X-ray diffraction technique（XRD） with variable microwave temperatures. XRD analysis showed that the phosphors prepared by MA-CCP method at the temperature of 750, 900oC, respectively and solid-state reaction（SSR） method at 1300oC consisted of impurities. Commission Internationale de L＇Eclairage（CIE） color coordinates of CaAl_2O_4：Eu^（2＋）,Nd^（3＋） were suitable as blue light emitting phosphor. Excitation and emission peaks of the samples prepared by different methods in this study were almost the same. The images of SEM showed that the size of the phosphors prepared by MA-CCP method reached a submicrometer.

关 键 词：CaAl2O4 Eu2＋ Nd3＋ microwave co-precipitation optical properties structural rare earths 

分 类 号：TQ422[化学工程]