Electrical conductivity measurements in a GeSeTi system

Madhavi Zope, B. D. Muragi, J. K. Zope

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21 Scopus citations

Abstract

The I - V characteristics and dc conductivity measurements of bulk Ge10Se90-xTlx with x = 1 to 9 have been experimentally investigated. The increase in room temperature conductivity is attributed to increase in the percentage of thallium (Tl), which creates charged centers inside the bulk of the material. The decrease in activation energy with increase in thallium content has been discussed on the basis of formation of new charged centers Tl4- (C20)3 in the mobility gap which shifts the Fermi level towards the valence band. An energy band diagram has been suggested on the basis of new charged centers Tl4- (C20)3 and C3+ for a Ge-Se- Tl system.

Original languageEnglish
Pages (from-to)195-200
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume103
Issue number2-3
DOIs
StatePublished - Jul 1988
Externally publishedYes

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