Document Server@UHasselt >
Research >
Research publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/16047

Title: Annealing of sulfide stabilized colloidal semiconductor nanocrystals
Authors: Dierick, Ruben
Capon, Boris
DAMM, Hanne
Flamee, Stijn
Arickx, Pieter
Bruneel, Els
VAN BAEL, Marlies
Detavernier, Christophe
Zeger, Hens
Issue Date: 2014
Citation: Journal of Materials Chemistry C, 2 (1), p. 178-183
Abstract: The effect of thermal annealing on layers of CuInS2 nanocrystals (NCs) stabilized with (NH4)2S was investigated using in situ transmission electron microscopy (TEM), in situ X-ray diffraction (XRD), thermogravimetric analysis combined with mass spectrometry (TGA-MS) and X-ray photoelectron spectroscopy (XPS). It is shown that these inorganic, chalcogen containing ligands inhibit NC sintering up to 450 C in an inert atmosphere. On the other hand, sintering can be promoted by annealing in hydrogen gas. A similar behavior is found with Cu2ZnSnSe4 and CdSe NCs. We attribute the inhibited sintering to the oxidation of the S2 originally stabilizing the NCs to sulfite or sulfate moieties, where oxidation is possible either by exposure of the films to air or by thermal decomposition of residual solvent molecules present in the film under inert conditions.
Notes: Hens, Z (reprint author), Univ Ghent, Krijgslaan 281-S3, B-9000 Ghent, Belgium ruben.dierick@ugent.be; zeger.hens@ugent.be
URI: http://hdl.handle.net/1942/16047
DOI: 10.1039/C3TC31393J
ISI #: 000327849500022
ISSN: 2050-7526
Category: A1
Type: Journal Contribution
Validation: ecoom, 2015
Appears in Collections: Research publications

Files in This Item:

Description SizeFormat
published version1.36 MBAdobe PDF

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.