Photoacoustic Spectroscopy of Cu Impurities in Ceramic ZnS
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概要
- 論文の詳細を見る
Photoacoustic spectroscopy is used to study the heat generated by nonradiative processes due to Cu impurities in ceramic ZnS. It can provide information on optical absorption for ceramics because of the detection of a signal directly proportional to thermal energy induced by the absorbed photons. Photoacoustic spectra of ceramic ZnS containing Cu impurities depend on the concentration of Cu impurities. Photoacoustic signal intensities plotted semilogarithmically vary linearly with photon energy below the fundamental absorption edge. The steepness factor for ZnS which characterizes the slope in a semilogarithmic plot decreases with rising concentration of Cu impurities, indicating the structural disorder caused by the Cu impurities. The photoacoustic signal intensity for a state with a photon energy of 1.65 eV, which is considered the charge transfer transition from S^<2-> to Cu^<2+>, increases with rising concentration of Cu impurities concentration indicating an increase in charge transfer transitions.
- 社団法人応用物理学会の論文
- 1997-05-30
著者
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Toyoda Taro
Department Of Applied Physics And Chemistry The University Of Electro-communications
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SHINOYAMA Kazuki
Department of Applied Physics and Chemistry, The University of Electro-Communications
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Shinoyama Kazuki
Department Of Applied Physics And Chemistry The University Of Electro-communications
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