Synthesis of CuInS 2 nanocrystals from a molecular complex – characterization of the orthorhombic domain structure

CuInS 2 nanocrystals were synthesized by thermal decomposition of the molecular precursor [(Me 3 P) 3 Cu(SC 2 H 4 S)In i Pr 2 ] in the presence of oleylamine in dioctyl phthalate. According to X-ray diffraction patterns, the as-synthesized CuInS 2 nanocrystals crystallize in the wurtzite type struct...

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Published inDalton transactions : an international journal of inorganic chemistry Vol. 44; no. 32; pp. 14227 - 14234
Main Authors Cholula-Díaz, Jorge L., Wagner, Gerald, Friedrich, Dirk, Oeckler, Oliver, Krautscheid, Harald
Format Journal Article
LanguageEnglish
Published 2015
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Summary:CuInS 2 nanocrystals were synthesized by thermal decomposition of the molecular precursor [(Me 3 P) 3 Cu(SC 2 H 4 S)In i Pr 2 ] in the presence of oleylamine in dioctyl phthalate. According to X-ray diffraction patterns, the as-synthesized CuInS 2 nanocrystals crystallize in the wurtzite type structure. High-resolution transmission electron images and selected area electron diffraction patterns reveal a nanodomain structure. The individual domains are approximately 5–10 nm in size and characterized by short-range cation ordering, which assuming hypothetical long-range order, corresponds to an orthorhombic superstructure (space group Pmc 2 1 , a = 4.09 ± 0.01 Å, b = 7.16 ± 0.02 Å and c = 6.56 ± 0.03 Å). The domains are separated by twin and antiphase boundaries.
ISSN:1477-9226
1477-9234
DOI:10.1039/C5DT00419E