Synthesis and Optical Properties of Cu2CoSnS4 Colloidal Quantum Dots

Arnaud Gillorin (1) , Andréa Balocchi (2) , Xavier Marie (2) , Pascal Dufour (1) , Jean-Yves Chane-Ching (1)

1 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
2 LPCNO - Laboratoire de physique et chimie des nano-objets

Monodisperse quaternary chalcopyrite Cu2CoSnS4 colloidal quantum dots have been synthesized by acid peptization of a tailored Cu2CoSnS4 precursor displaying loosely packed, ultrafine primary crystallites. Well-defined peaks shifted to higher energy compared to the Cu2CoSnS4 bulk band gap value were observed on the UV-Vis absorption curve consistent with a quantum confinement behavior. First investigations by room temperature time resolved photoluminescence (TRPL) spectroscopy suggest that the photoluminescence emission does not arise from a donor–acceptor recombination..

Mots clés: Cu2CoSnS4; TRPL; Colloidal Quantum Dots

Domaines: Matériaux

Arnaud Gillorin, Andréa Balocchi, Xavier Marie, Pascal Dufour, Jean-Yves Chane-Ching. Synthesis and Optical Properties of Cu2CoSnS4 Colloidal Quantum Dots. Journal of Materials Chemistry, 2011, 21 (15), pp.5615-5619. ⟨10.1039/C0JM03964K⟩. ⟨hal-03542117⟩