title: Highly luminescent core-shell InP/ZnX (X = S, Se) quantum dots prepared via a phosphine synthetic route.
abstract: Here we report a simple method for the creation of highly luminescent core-shell InP/ZnX (X = S, Se) quantum dots (QDs) on the basis of a phosphine synthetic route. In this method a Zn precursor was added to the reaction mixture at the beginning of the synthesis to form an In(Zn)P alloy structure, which promoted the formation of a ZnX shell. Core-shell InP/ZnX QDs exhibit highly intensive emission with a quantum yield over 50%. The proposed method is primarily important for practical applications. Advantages of this method compared to the widely used SILAR technique are discussed. We further demonstrate that the SILAR approach consisting of consequent addition of Zn and chalcogen precursors to pre-prepared non-doped InP colloidal nanoparticles is not quite suitable for shell growth without the addition of special activator agents or the use of very reactive precursors.
authors.affiliation: Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia. n.mordvinova@gmail.com.
authors.forename: Natalia
authors.identifier: http://orcid.org/0000-0002-3070-9497
authors.initials: N
authors.lastname: Mordvinova
authors.affiliation: Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia. n.mordvinova@gmail.com.
authors.forename: Alexander
authors.initials: A
authors.lastname: Vinokurov
authors.affiliation: Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia. n.mordvinova@gmail.com.
authors.forename: Tatiana
authors.initials: T
authors.lastname: Kuznetsova
authors.affiliation: Laboratoire CRISMAT UMR6508 CNRS-ENSICAEN-Normandie Université, 14050 Caen, France.
authors.forename: Oleg I
authors.initials: OI
authors.lastname: Lebedev
authors.affiliation: Department of Chemistry, Lomonosov Moscow State University, 119991, Moscow, Russia. n.mordvinova@gmail.com.
authors.forename: Sergey
authors.initials: S
authors.lastname: Dorofeev