期刊
QUANTUM ELECTRONICS
卷 45, 期 9, 页码 853-857出版社
TURPION LTD
DOI: 10.1070/QE2015v045n09ABEH015827
关键词
nanophotonics; colloidal semiconductor nanostructures; nanoscrolls and nanoplatelets; absorption and photoluminescence spectra; luminescence decay kinetics
资金
- Russian Scientific Foundation [14-22-00273]
- Russian Foundation for Basic Research [14-02-31269-mol-a, 14-02-90452-ukr, 15-02-07777-a, 15-02-05856-a]
- Division of Physical Sciences of the Russian Academy of Sciences
- Presidium of the Russian Academy of Sciences [1]
Nanostructures in the form of 1.2-nm-thick colloidal CdSe nanoplatelets rolled into scrolls are investigated. The morphology of these scrolls is analysed and their basic geometric parameters are determined (diameter 29 nm, longitudinal size 100-150 nm) by TEM microscopy. Absorption and photoluminescence spectra of these objects are recorded, and the luminescence decay kinetics is studied. It is shown that the optical properties of CdSe nanoscrolls differ significantly from the properties of CdSe quantum dots and that these nanoscrolls are attractive for nanophotonic devices due to large oscillator strengths of the transition, small widths of excitonic peaks and short luminescence decay times. Nanoscrolls can be used to design hybrid organic-inorganic pure-color LEDs with a high luminescence quantum yield and low operating voltages.
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