Synthesis of CuInS2 nanocrystals from a molecular complex - characterization of the orthorhombic domain structureDedicated to Professor Manfred Scheer on the occassion of his 60th birthday.Electronic supplementary information (ESI) available: Details on the synthesis and simultaneous thermal analysis of the molecular complex 1. Crystallographic data of the hypothetical orthorhombic CuInS2 phases with space groups Pmn21 and Pmc21. Temperature-dependent XRD, TEM and HRTEM images, SAED patterns, an

• Main Authors: Cholula-Díaz, Jorge L, Wagner, Gerald, Friedrich, Dirk, Oeckler, Oliver, Krautscheid, Harald
• Format: Journal Article
• Language: English
• Published: 04.08.2015
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/c5dt00419e

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. HRTEM images and SAED patterns reveal the orthorhombic domain structure of CuInS 2 nanoparticles.