Mixed optical phonon modes in semiconductor nanocrystals synthesized in porous Al 2 O 3  matrix | Zendy

Belogorokhov A. I. | Zendy; Belogorokhova L. I. | Zendy; Miranda R. P. | Zendy; Vasilevskiy M. I. | Zendy; Gavrilov S. A. | Zendy

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Mixed optical phonon modes in semiconductor nanocrystals synthesized in porous Al 2 O 3 matrix

Author(s) -

Belogorokhov A. I.,

Belogorokhova L. I.,

Miranda R. P.,

Vasilevskiy M. I.,

Gavrilov S. A.

Publication year - 2004

Publication title -

physica status solidi (c)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.21

H-Index - 46

eISSN - 1610-1642

pISSN - 1610-1634

DOI - 10.1002/pssc.200405336

Subject(s) - phonon , nanocrystal , matrix (chemical analysis) , materials science , quantum dot , condensed matter physics , spectral line , reflection (computer programming) , semiconductor , quantum , surface phonon , porosity , molecular physics , physics , nanotechnology , quantum mechanics , optoelectronics , composite material , computer science , programming language

This work is devoted to experimental and theoretical studies of optical phonons confined in CdS nanocrystals grown inside a porous alumina matrix. The complete sets of phonon modes, confined in a spherical quantum dot and in a cylindrical quantum wire, are considered in the framework of a continuum model, which allows the mixing of all the expected types of vibrations. It is shown that the calculated phonon‐related response in the far‐infrared spectral region agrees qualitatively with the measured spectra of typical samples, providing an explanation for a rather unusual structure of the reflection and transmission spectra. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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