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Proceedings Paper

Optical and transport properties of nanostructured PbTe(In) films
Author(s): Alexandr Dobrovolsky; Ivan Belogorokhov; Zinovi Dashevsky; Vladimir Kasiyan; Ludmila Ryabova; Dmitry Khokhlov
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Paper Abstract

Photoelectric, transport and optical properties are studied for nanostructured PbTe(In) films. Synthesis of the films was performed using evaporation of a target source to a glass substrate. The films have column-like structure with a mean grain size varying from about 60 nm to 170 nm depending on the substrate temperature. Analysis of the data obtained revealed that the conductivity of the films is determined by two mechanisms: charge transport along the inversion channels at the grain surface and activation through barriers at the grain boundary. Persistent photoconductivity appears in the films below T = 150 K. The frequency dependence of the relative photoresponse has a pronounced maximum. The photoresponse in the ac mode may be by two orders of magnitude higher than in the dc measurements.

Paper Details

Date Published: 20 August 2009
PDF: 6 pages
Proc. SPIE 7404, Nanostructured Thin Films II, 74040S (20 August 2009); doi: 10.1117/12.825311
Show Author Affiliations
Alexandr Dobrovolsky, M. V. Lomonosov Moscow State Univ. (Russian Federation)
Ivan Belogorokhov, M. V. Lomonosov Moscow State Univ. (Russian Federation)
Zinovi Dashevsky, Ben-Gurion Univ. (Israel)
Vladimir Kasiyan, Ben-Gurion Univ. (Israel)
Ludmila Ryabova, M. V. Lomonosov Moscow State Univ. (Russian Federation)
Dmitry Khokhlov, M. V. Lomonosov Moscow State Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 7404:
Nanostructured Thin Films II
Geoffrey B. Smith; Akhlesh Lakhtakia; Cheng-Chung Lee, Editor(s)

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