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 2040-3372

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

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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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