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Optical properties and structure of Ag-doped InP quantum dots prepared by phosphine synthetic route

Abstract

We report a novel silver doping technique of InP quantum dots (QDs) using AgCl·TOP complex and PH3 as silver and phosphorus precursors respectively. Formation of two types of nanoparticles is observed: Ag-doped InP QDs at lower silver concentrations and novel Ag/InP core-shell nanostructures that are formed at high Ag-precursor concentrations in the reaction mixture. Ag-doped QDs possess two luminescent bands: an excitonic one at approx. 670 nm, and IR-band, connected with dopant luminescence, at approx. 900 nm. Postsynthetic covering with the ZnS shell leads to significant increase of both types of luminescence. Core-shell Ag/InP nanoparticles have no luminescence in the visible and near-IR spectral region.

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Publication details

The article was received on 13 Jun 2018, accepted on 08 Aug 2018 and first published on 09 Aug 2018


Article type: Paper
DOI: 10.1039/C8DT02434K
Citation: Dalton Trans., 2018, Accepted Manuscript
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    Optical properties and structure of Ag-doped InP quantum dots prepared by phosphine synthetic route

    A. Vinokurov, G. Chernysheva, N. Mordvinova and S. G. Dorofeev, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT02434K

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