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

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...

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Published inJournal of rare earths Vol. 35; no. 7; pp. 652 - 657
Main Author 余媛 王建 王纪冬 李婧 朱亚楠 李晓强 宋晓蕾 葛明桥
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.2017
Subjects
CaAl2O4:Eu2+,Nd3
co-precipitation
microwave
optical properties
rare earths
structural
XRD分析
X射线衍射技术
光学性质
化学共沉淀法
合成技术
微波辅助
结构表征
荧光粉
co-precipitation
optical properties
structural
CaAl2O4:Eu2+,Nd3
microwave
rare earths
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Summary: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.
Bibliography: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.
11-2788/TF
CaAl2O4 Eu2＋ Nd3＋ microwave co-precipitation optical properties structural rare earths
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(17)60959-1