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The Influence of Alloy Composition on the Electronic Properties of IV–VI Core/Shell Colloidal Heterostructures
Author(s) -
Lifshitz Efrat,
Vaxenburg Roman,
Maikov Georgy I.,
RubinBrusilovski Anna,
Yanover Diana,
Tilchin Jenya,
Sashchiuk Aldona
Publication year - 2012
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.201200068
Subject(s) - heterojunction , chemistry , alloy , nanostructure , colloid , shell (structure) , electronic structure , core (optical fiber) , chemical composition , nanotechnology , chemical physics , open shell , characterization (materials science) , chemical engineering , computational chemistry , optoelectronics , materials science , composite material , organic chemistry , engineering
Considering the significant potential of IV–VI colloidal nanostructures in various technologies, this review describes the development and characterization of unique IV–VI derivatives, consisting of core/shell heterostructures, when either the core or the shell (or both) has an alloy composition with the chemical formula PbSe x S 1− x /PbSe y S 1− y (0≤ x ( y )≤1). We describe the synthetic procedures and a thorough investigation of the optical properties of the discussed materials. The experimental evidence is supported by suitable electronic band structure calculations. The special properties are expressed as fine tunability of the electronic properties, chemical and temperature stability, variation of electronphonon interactions, emission Stokes shifts and lifetimes, upon the variation of the composition and/or architecture of the heterostructures. The properties obtained are of significant importance in opto‐electronic applications.

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