Diffusion of Excitons in KI Crystals
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概要
- 論文の詳細を見る
Under the excitations in the fundamental absorption bands, luminescence and excitation spectra for doped impurities as well as a self trapped exciton in a KI crystal are studied in detail at a temperature range of 5∼100 K. In doped crystals, impurity luminescence are induced instead of the intrinsic luminescence at 3.01 eV which comes from the self trapped exciton under the excitation in the first exciton absorption band. The induced impurity luminescence are confirmed to be due to collision of free excitons with doped impurities. The diffusion coefficient of the free exciton is found to be proportional to T^<-1/2> below 40 K and above that temperature to T^<1/2[exp(hω/kT)-1]. The value of the diffusion coefficient is estimated to be about 0.1 cm^2 sec^<-1> at 5 K.
- 社団法人日本物理学会の論文
- 1975-08-15
著者
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NISHIMURA Hitoshi
Departments of Oral Surgery, Nihon University School of Dentistry at Matsudo
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TOMURA Masao
Department of Applied Physics,Osaka City University
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Tomura Masao
Department Of Applied Physics Osaka City University
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Nishimura Hitoshi
Department Of Analytical And Bioinorganic Chemistry Kyoto Pharmaceutical University
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