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Observation of compositional domains within individual copper indium sulfide quantum dots

Harvie, Andrew, Booth, Matthew, Chantry, Ruth , Hondow, Nicole, Kepaptsoglou, Demie, Ramasse, Quentin, Evans, Stephen and Critchley, Kevin (2016) Observation of compositional domains within individual copper indium sulfide quantum dots. Nanoscale, 8 (36). pp. 16157-16161. ISSN 2040-3364

Full content URL: https://doi.org/10.1039/C6NR03269A

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Observation of compositional domains within individual copper indium sulfide quantum dots
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Abstract

The origin of photoluminescence in copper indium sulfide (CIS) quantum dots (Qdots) has previously been ascribed to a donor–acceptor pair (DAP) recombination, with a crystal lattice defect implicated as the origin of the donor state. In this study, electron energy-loss spectroscopy (EELS) was used to observe defect-rich compositional domains within individual CIS Qdots, supporting a model of defect-state-mediated photoluminescence for these particles, and identifying them as an ideal model system for future study of lattice defects on Qdot properties.

Keywords:Qauntum Dots, STEM, Copper Indium Dislufide, JCOpen
Subjects:F Physical Sciences > F200 Materials Science
Divisions:College of Science > School of Mathematics and Physics
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ID Code:25265
Deposited On:01 Dec 2016 14:46

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