Screening and Stark Effects Due to Impurities on Excitons in CdS
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概要
- 論文の詳細を見る
Properties of intrinsic and bound excitons in CdS with Cl donor concentrations over a wide range are investigated by measuring emission and reflection spectra at liquid helium temperature. As a result two characteristic properties of excitons are observed. 1) The binding energy of exditons decreases with increasing donor concentration, but the dependence on the concentration is different between intrinsic and bound excitons. 2) The emission line due to bound exciton shows asymmetric broadening with a tail extending to lower energies at high donor concentrations. According to Hanamura's theoretical work in the succeeding paper, the first behavior of the decrease of binding energy is ascribed to the screening effect of donor electrons on excitons. The second feature of anomalous line shape is concluded to be a consequence of the Stark effect due to charged impurities on bound exciton. On the basis of these interpretations very good agreement has been obtained between experiment and theory.
- 社団法人日本物理学会の論文
- 1970-01-05
著者
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Shionoya Shigeo
The Institute For Solid State Physics The University Of Tokyo
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Morigaki Kazuo
The Institute For Solid State Physics The University Of Tokyo
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Kukimoto Hiroshi
The Institute For Solid State Physics The University Of Tokyo
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Toyotomi Seizo
The Institute For Solid State Physics The University Of Tokyo
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TOYOTOMI Seizo
The Institute for Solid State Physics, The University of Tokyo
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