Optical and transport properties of nanostructured PbTe(In) films

Alexandr Dobrovolsky, Ivan Belogorokhov, Zinovi Dashevsky, Vladimir Kasiyan, Ludmila Ryabova, Dmitry Khokhlov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationNanostructured Thin Films II
DOIs
StatePublished - 23 Nov 2009
EventNanostructured Thin Films II - San Diego, CA, United States
Duration: 5 Aug 20096 Aug 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7404
ISSN (Print)0277-786X

Conference

ConferenceNanostructured Thin Films II
Country/TerritoryUnited States
CitySan Diego, CA
Period5/08/096/08/09

Keywords

  • Nanostructured films
  • Narrow-gap semiconductors
  • Photoelectric and optical properties
  • Transport properties

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