Investigation of the size–property relationship in CuInS2 quantum dots

Please always quote using this URN: urn:nbn:de:bvb:29-opus4-84772
  • In this work we investigated fundamental properties of CuInS2 quantum dots in dependence of the particle size distribution (PSD). Size-selective precipitation (SSP) with acetone as poor solvent was performed as an adequate post-processing step. Our results provide deep insight into the correlation between particle size and various optical characteristics as bandgap energy, absorption and emission features and the broadness of the emission signal. These structure–property relationships are only achieved due to the unique combination of different analytical techniques. Our study reveals that the removal of 10 wt% of smallest particles from the feed results in an enhancement of the emissionIn this work we investigated fundamental properties of CuInS2 quantum dots in dependence of the particle size distribution (PSD). Size-selective precipitation (SSP) with acetone as poor solvent was performed as an adequate post-processing step. Our results provide deep insight into the correlation between particle size and various optical characteristics as bandgap energy, absorption and emission features and the broadness of the emission signal. These structure–property relationships are only achieved due to the unique combination of different analytical techniques. Our study reveals that the removal of 10 wt% of smallest particles from the feed results in an enhancement of the emission signal. This improvement is ascribed to a decreased quenching of the emission in larger particles. Our results reveal the impact of PSDs on the properties and the performance of an ensemble of multicomponent QDs and anticipate the high potential of controlling PSDs by well-developed post-processing.show moreshow less

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Metadaten
Author:T. Akdas, J. Walter, D. Segets, M. Distaso, B. Winter, B. Birajdar, E. Spiecker, W. Peukert
Persistent identifiers - URN:urn:nbn:de:bvb:29-opus4-84772
Persistent identifiers - DOI:https://doi.org/10.1039/C5NR04291G
Title of the journal / compilation (English):Nanoscale
Document Type:Article
Language:English
Year of publication:2015
Date of online publication (Embargo Date):2017/05/10
Publishing Institution:Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Release Date:2017/07/03
SWD-Keyword:-
Volume/year:7
Issue:43
Length/size:18105 - 18118
Original publication:Nanoscale 7.43 (2015): S. 18105-18118. <http://pubs.rsc.org/en/content/articlelanding/2015/nr/c5nr04291g#!divAbstract>
Institutes:Technische Fakultät
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 60 Technik / 600 Technik, Technologie
open_access (DINI-Set):open_access
Collections:Universität Erlangen-Nürnberg / Allianzlizenzen: Alle Beiträge sind mit Zustimmung der Rechteinhaber aufgrund einer DFG-geförderten Allianzlizenz frei zugänglich. / Allianzlizenzen 2015
Licence (German):Keine Creative Commons Lizenz - es gilt der Veröffentlichungsvertrag und das deutsche Urheberrecht