期刊
NANOSCALE
卷 8, 期 36, 页码 16157-16161出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nr03269a
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- AstraZeneca
- MRC
- EPSRC [MR/K015613/1, EP/K023845/1]
- EPSRC [EP/K023845/1] Funding Source: UKRI
- MRC [MR/K015613/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K023845/1] Funding Source: researchfish
- Medical Research Council [MR/K015613/1] Funding Source: researchfish
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.
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