Luminescence Excitation Spectra and Their Exciton Structures of ZnS Phosphors. : II. Al and Te Doped Phosphors
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概要
- 論文の詳細を見る
UV emission bands designated Al-SAL and Te-BE due to Al and Te, respectively, in hexagonal ZnS have been investigated at 75 K or with varying temperature with the major focus on exciton structures in the excitation spectra. The concentration and temperature variations of the exciton structures show that the Al-SAL and Te-BE bands are composed of two bands ; one is due to bound exciton recombination, and the other results from electron-hole recombination at pairs of shallow donors and isoelectronic centers. In the Te-doped samples, the isoelectronic center responsible is tellurium substituting for sulfur, but that due to Al doping has not been identified yet. Two kinds of edge omission are also observed ; one is due to donor-acceptor pairs and is accompanied by a series of peaks with equidistant intervals of 335 cm<-1>, and the other involves isoelectronic centers.
- 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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