Polarization of the Green-Copper Luminescence in Hexagonal ZnS Single Crystal
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概要
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The polarization characteristics of the green-copper luminescence in a hexagonal ZnS:Cu,Al single crystal grown from the melt were investigated. The luminescence is polarized preferentially perpendicular to the c-axis, independently of the polarization and wavelength of excitation light. It is concluded that the luminescence center does not have a symmetry lower than that of the host lattice and is probably composed of a substitutional non-associated Cu^<+> ion. Two different types of arguments for the polarization results are presented; i.e. one which pays attention to the symmetry of the energy bands and the other in which the nature of the Cu+ levels is considered in terms of the crystal field theory. It appears most plausible to say that the luminescence is due to the recombination of a free or nearly free electron with a hole at the 3d-e(t_z) orbit of Cu^+.
- 社団法人日本物理学会の論文
- 1965-11-05
著者
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Koda Takao
The Institute For Solid State Physics The University Of Toky
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Shionoya Shigeo
The Institute For Solid State Physics The University Of Tokyo
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KOBAYASHI Yoshitomo
The Institute for Solid State physics, The University of Tokyo
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Kobayashi Yoshitomo
The Institute For Solid State Physics The University Of Tokyo
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