PHOTOINDUCED PHENOMENA OF CHALCOGEN MICROCLUSTERS CONFINED IN THE ZEOLITE CAGES

K. Maruyama, T. Tsuzuki, M. Yao and H. Endo
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K. Maruyama: Faculty of Science, Niigata University, Niigata 950–21, Japan
T. Tsuzuki: Faculty of Science, Kyoto University, Kyoto 606–01, Japan
M. Yao: Faculty of Science, Kyoto University, Kyoto 606–01, Japan
H. Endo: Faculty of Engineering, Fukui Institute of Technology, Fukui 910, Japan

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 711-715

Abstract: Photoacoustic spectroscopy measurements have been carried out on the Se-ring microclusters confined in the cages of zeolite 4A. The shift of photoabsorption edge and the new absorption bands around 1.5 and 1.9 eV appeared by illumination of the light having the band-gap energy at low temperature. These phenomena may be associated with the distortion of Se ring and the formation of dangling bonds. Mixing of S or Te to the Se microclusters causes appreciable change in the photoinduced phenomena.

Date: 1996
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DOI: 10.1142/S0218625X96001285

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