Luminescence of ZnIn_2S_4 and ZnIn_2S_4:Cu Single Crystals
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概要
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Single crystals of ZnIn_2S_4 and Znin_2S_4:Cu were grown by the method of the chemical transport reactions, The space group for the crystal structure was determined to be the rhombohedral C^k_<8r>(R3m) group. It was found that both ZnIn_2S_4 and ZnIn_2S_4:Cu crystals show fairly bright red luminescence. The characteristics of the luminescence and photoconductivity were measured in detail. The origin of the luminescence centers was discussed with the assistance of knowledge on ZnS type phospbors. The center for the red Iuminescence in ZnIn_2S_4:Cu may be the same type of center as that for the copper-green luminescence in ZnS, the luminescence transition being, therefore, probably that of free electron to the acceptor1ike level of copper at zinc site. As for the red luminescence in the undoped crylsal, it is suggested that the crystal involves two kinds of centers, i.e. the red luminescence center due to copper contained as impurity and the self-activated center due to iodine, which has been used as transporter, acting as coactivator.
- 社団法人日本物理学会の論文
- 1964-07-05
著者
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Shionoya Shigeo
The Institute For Solid State Physics The University Of Tokyo
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Tamoto Yusaku
The Institute For Solid State Physics The University Of Tokyo
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