title: Colloidal Synthesis of Quantum Confined Single Crystal CsPbBr3 Nanosheets with Lateral Size Control up to the Micrometer Range.
abstract: We report the nontemplated colloidal synthesis of single crystal CsPbBr3 perovskite nanosheets with lateral sizes up to a few micrometers and with thickness of just a few unit cells (i.e., below 5 nm), hence in the strong quantum confinement regime, by introducing short ligands (octanoic acid and octylamine) in the synthesis together with longer ones (oleic acid and oleylamine). The lateral size is tunable by varying the ratio of shorter ligands over longer ligands, while the thickness is mainly unaffected by this parameter and stays practically constant at 3 nm in all the syntheses conducted at short-to-long ligands volumetric ratio below 0.67. Beyond this ratio, control over the thickness is lost and a multimodal thickness distribution is observed.
authors.affiliation: Nanochemistry Dept., Istituto Italiano di Tecnologia , Via Morego 30, 16163 Genova, Italy.|Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova , Via Dodecaneso 31, 16146 Genova, Italy.
authors.forename: Javad
authors.initials: J
authors.lastname: Shamsi
authors.affiliation: Nanochemistry Dept., Istituto Italiano di Tecnologia , Via Morego 30, 16163 Genova, Italy.
authors.forename: Zhiya
authors.initials: Z
authors.lastname: Dang
authors.affiliation: Nanophysics Dept., Istituto Italiano di Tecnologia , Via Morego 30, 16163 Genova, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Bianchini
authors.affiliation: Nanophysics Dept., Istituto Italiano di Tecnologia , Via Morego 30, 16163 Genova, Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: Canale
authors.affiliation: Nanochemistry Dept., Istituto Italiano di Tecnologia , Via Morego 30, 16163 Genova, Italy.
authors.forename: Francesco Di
authors.initials: FD
authors.lastname: Stasio
authors.affiliation: Nanochemistry Dept., Istituto Italiano di Tecnologia , Via Morego 30, 16163 Genova, Italy.
authors.forename: Rosaria
authors.initials: R
authors.lastname: Brescia
authors.affiliation: Nanochemistry Dept., Istituto Italiano di Tecnologia , Via Morego 30, 16163 Genova, Italy.
authors.forename: Mirko
authors.initials: M
authors.lastname: Prato
authors.affiliation: Nanochemistry Dept., Istituto Italiano di Tecnologia , Via Morego 30, 16163 Genova, Italy.
authors.forename: Liberato
authors.initials: L
authors.lastname: Manna