Luminescence Excitation Spectra and Their Exciton Structures of ZnS Phosphors : I. Mn, (Cu, Al), (Ag, Al) and (Au, Al) Doped Phosphors
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概要
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Single-ion luminescence due to Mn<2+> and donor-acceptor pair luminescence due to (Cu, Al), (Ag, Al) and (Au, Al) centered in hexagonal ZnS have been investigated at 75 K with a major focus on exciton structures in the excitation spectra. Appearance of exciton peaks in Mn<2+> luminescence excitation spectra indicates that the isoelectronic Mn center can bind a free exciton. Such an exciton binding is caused by the hole-binding nature of the Mn center. The A_1 exciton line is accompanied by an oscillatory structure with constant intervals of 356 cm<-1> due to indirect hot exciton creation. Exciton structure in the DA pair excitation spectra varies from ambiguous to distinctive dips with increasing monitored wavelength. Distant DA pairs do not bind free excitons, but close pairs can do so.
- 社団法人応用物理学会の論文
- 1980-02-05
著者
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Kawai Hiroji
Sony Corporation Research Center
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Kawai Hiroji
Sony Corporation Frontier Science Laboratories
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HOSHINA Teruhiko
Sony Corporation Research Center
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