Issue 80, 2016

Shape control of zincblende CdSe nanoplatelets

Abstract

The lateral dimensions of CdSe nanoplatelets have a strong and unique influence on their opto-electronic properties, with sizes that can be tuned from the weak to the strong exciton confinement regime. There are state-of-the-art reports on several nanoplatelet syntheses; however, at present only the thickness is well-controlled. We demonstrate here that we can achieve a control over the aspect ratio and overall nanoplate area by carefully adjusting the reagents that induce the in-plane growth. A variation of the fraction of hydrated Cd(OAc)2 in a Cd(OAc)2/Cd(OAc)2·2H2O mixture tailors the nanoplatelet aspect ratio. This occurs independently of the reaction time, which can be used to fine-tune the overall length and width. An interpretation is given by the in situ formation of a small amount of hydroxide anions that alter the surface energy of specific planes.

Graphical abstract: Shape control of zincblende CdSe nanoplatelets

Supplementary files

Article information

Article type
Communication
Submitted
11 Jul 2016
Accepted
07 Sep 2016
First published
07 Sep 2016
This article is Open Access
Creative Commons BY-NC license

Chem. Commun., 2016,52, 11975-11978

Shape control of zincblende CdSe nanoplatelets

G. H. V. Bertrand, A. Polovitsyn, S. Christodoulou, A. H. Khan and I. Moreels, Chem. Commun., 2016, 52, 11975 DOI: 10.1039/C6CC05705E

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