Mixing of Excitons in Nanostructures Based on a Perylene Dye with CdTe Quantum Dots

Yu. P. Piryatinski, Markiian Malynovskyi , Maryna Sevryukova, Anatoli B. Verbitsky, Olga Kapush, Alex Rozhin, Petro Lutsyk*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Number of pages17
JournalMaterials
Volume16
Issue number2
Early online date6 Jan 2023
DOIs
Publication statusE-pub ahead of print - 6 Jan 2023

Bibliographical note

© 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

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