OPTICAL PROPERTIES OFCdSANDSeCLUSTERS IN ZEOLITES

T. Arai, M. Murai, J. Ohmori, K. Matsuishi and S. Onari
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T. Arai: Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
M. Murai: Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
J. Ohmori: Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
K. Matsuishi: Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
S. Onari: Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 707-710

Abstract: We have studied the electronic and vibrational properties ofCdSandSeclusters in zeolites by Raman scattering and photoluminescence measurements.CdSclusters were formed photochemically through the dissociation ofS8molecules in A and X types ofCd2+-exchanged zeolites by laser irradiation, whileCdSeclusters were not successfully produced in the same manner. The 1LO mode ofCdSat300cm−1shifts to lower frequencies in the zeolites in comparison with that of bulkCdS, indicating the effect of phonon confinement. Se clusters incorporated into zeolites with different pore sizes (3A, 4A, 5A, and 13X) exhibit strong dependence of the structural phase stability and the structural unit on the geometrical constraints of zeolites.

Date: 1996
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DOI: 10.1142/S0218625X96001273

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