Q-dots and Q-wires in the microporous and mesoporous zeolite as matrix host-guest and guest-guest interaction

German M. Tel'biz; Olexyi V. Shvets; Michail S. Brodyn; Volodymyr L. Vozny

doi:10.1117/12.425424

17 April 2001 Q-dots and Q-wires in the microporous and mesoporous zeolite as matrix host-guest and guest-guest interaction

German M. Tel'biz, Olexyi V. Shvets, Michail S. Brodyn, Volodymyr L. Vozny

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Proceedings Volume 4413, International Conference on Solid State Crystals 2000: Epilayers and Heterostructures in Optoelectronics and Semiconductor Technology; (2001) https://doi.org/10.1117/12.425424
Event: International Conference on Solid State Crystals 2000, 2000, Zakopane, Poland

Abstract

We report here on the development of host-guest and guest-guest interaction in course of preparation procedures semiconductor clusters (CdS, PbI₂), in zeolite (FAU,LTL) matrix. Optical properties of practically unexplored PbI₂/zeolite LTL system have been investigated. Both in absorption (reconstructed from diffuse reflection via Kubelka-Munk function) and luminescence spectra the features were observed at energies much exceeding the excitation resonance energy Eex in bulk PbI₂. This is considered as an indication of size quantization through the unambiguous attribution of the respective transitions requires further studies, including theoretical ones. For the samples with relatively high PbI₂ content the narrow emission peak only slightly blue-shifted from Eex was observed and attributed to long clusters formed inside the main channels of zeolite LTL lattice and possible retaining the layer structure of bulk PbI₂. The gradual disappearance of this peak during the storage of samples in the air is explained by assuming that originally formed long clusters undergo fragmentation into smaller species.

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German M. Tel'biz, Olexyi V. Shvets, Michail S. Brodyn, and Volodymyr L. Vozny "Q-dots and Q-wires in the microporous and mesoporous zeolite as matrix host-guest and guest-guest interaction", Proc. SPIE 4413, International Conference on Solid State Crystals 2000: Epilayers and Heterostructures in Optoelectronics and Semiconductor Technology, (17 April 2001); https://doi.org/10.1117/12.425424

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