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Optical spectroscopy of opal matrices with CdS embedded in its pores: Quantum confinement and photonic band gap effects

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Il Nuovo Cimento D

Summary

The spectra of transmission and reflection of synthetic opal which has 3-dimensional periodic structure were measured at different orientations of incident beam relative to the sample facets. It is shown that opal behaves as «semi-metallic» photonic band gap (PBG) material in the vicinity of photon energy 2.3 eV. The synthesis of CdS microcrystals embedded in the pores of opal was made for the first time in an attempt to form a system of quantum dots. Optical spectra (reflection and transmission, photoluminescence and Raman scattering) were studied. The results demonstrate good crystallinity of microcrystals embedded in opal matrix and exhibit well-pronounced quantum confinement effects in fundamental edge absorption spectra. The spectral overlap of the PBG of opal with electronic band gap of many of II–VI semiconductors seems to make opal/semiconductor system a promising media for experimental studies of such PBG-related effects as inhibition of spontaneous emission, microcavity polariton, etc.

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Authors and Affiliations

  1. A.F. Ioffe Physical-Technical Institute, St.-Petersburg, Russia

    V. N. Astratov, V. N. Bogomolov, A. A. Kaplyanskii, A. V. Prokofiev & Yu. A. Vlasov

  2. AlmazTechnoKristall, Aleksandrov, Russia

    L. A. Samoilovich

  3. Moscow State University, Moscow, Russia

    S. M. Samoilovich

Authors
  1. V. N. Astratov
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  2. V. N. Bogomolov
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  3. A. A. Kaplyanskii
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  4. A. V. Prokofiev
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  5. L. A. Samoilovich
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  6. S. M. Samoilovich
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  7. Yu. A. Vlasov
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Astratov, V.N., Bogomolov, V.N., Kaplyanskii, A.A. et al. Optical spectroscopy of opal matrices with CdS embedded in its pores: Quantum confinement and photonic band gap effects. Il Nuovo Cimento D 17, 1349–1354 (1995). https://doi.org/10.1007/BF02457208

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  • DOI: https://doi.org/10.1007/BF02457208

PACS 71.35

PACS 78.66.Hf

PACS 42.25.Bs

PACS 01.30.Cc

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