title: Observation of compositional domains within individual copper indium sulfide quantum dots.
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.
authors.affiliation: School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK. k.critchley@leeds.ac.uk.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Harvie
authors.forename: Matthew
authors.initials: M
authors.lastname: Booth
authors.forename: Ruth L
authors.initials: RL
authors.lastname: Chantry
authors.forename: Nicole
authors.initials: N
authors.lastname: Hondow
authors.forename: Demie M
authors.initials: DM
authors.lastname: Kepaptsoglou
authors.forename: Quentin M
authors.initials: QM
authors.lastname: Ramasse
authors.forename: Stephen D
authors.initials: SD
authors.lastname: Evans
authors.forename: Kevin
authors.initials: K
authors.lastname: Critchley