title: 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)2in 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.
authors.affiliation: Istituto Italiano di Tecnologia, via Morego 30, IT-16163 Genova, Italy. iwan.moreels@iit.it.
authors.forename: Guillaume H V
authors.initials: GH
authors.lastname: Bertrand
authors.affiliation: Istituto Italiano di Tecnologia, via Morego 30, IT-16163 Genova, Italy. iwan.moreels@iit.it and Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, IT-16146 Genova, Italy.
authors.forename: Anatolii
authors.initials: A
authors.lastname: Polovitsyn
authors.affiliation: Istituto Italiano di Tecnologia, via Morego 30, IT-16163 Genova, Italy. iwan.moreels@iit.it and Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, IT-16146 Genova, Italy.
authors.forename: Sotirios
authors.initials: S
authors.lastname: Christodoulou
authors.affiliation: Istituto Italiano di Tecnologia, via Morego 30, IT-16163 Genova, Italy. iwan.moreels@iit.it.
authors.forename: Ali Hossain
authors.initials: AH
authors.lastname: Khan
authors.affiliation: Istituto Italiano di Tecnologia, via Morego 30, IT-16163 Genova, Italy. iwan.moreels@iit.it.
authors.forename: Iwan
authors.identifier: http://orcid.org/0000-0003-3998-7618
authors.initials: I
authors.lastname: Moreels