Abstract
Semiconductor quantum dots of the A2B6 group and organic semiconductors have been widely studied and applied in optoelectronics. This study aims to combine CdTe quantum dots and perylene-based dye molecules into advanced nanostructure system targeting to improve their functional properties. In such systems, new electronic states, a mixture of Wannier–Mott excitons with charge-transfer excitons, have appeared at the interface of CdTe quantum dots and the perylene dye. The nature of such new states has been analyzed by absorption and photoluminescence spectroscopy with picosecond time resolution. Furthermore, aggregation of perylene dye on the CdTe has been elucidated, and contribution of Förster resonant energy transfer has been observed between aggregated forms of the dye and CdTe quantum dots in the hybrid CdTe-perylene nanostructures. The studied nanostructures have strongly quenched emission of quantum dots enabling potential application of such systems in dissociative sensing.
Original language | English |
---|---|
Article number | 552 |
Number of pages | 17 |
Journal | Materials |
Volume | 16 |
Issue number | 2 |
Early online date | 6 Jan 2023 |
DOIs | |
Publication status | Published - 6 Jan 2023 |
Bibliographical note
Copyright © 2023 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).Keywords
- perylene dye
- nanoparticles
- quantum dots
- cadmium telluride
- photoluminescence
- time-resolved spectroscopy
- exciton