<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The effect of different organic charge transporting materials on the photoluminescence of CdSe/ZnS core/shell quantum dots has been studied by means of steady-state and time-resolved photoluminescence spectroscopy. With an increase in concentration of the organic charge transporting material in the quantum dots solutions, the photoluminescence intensity of CdSe/ZnS quantum dots was quenched greatly and the fluorescence lifetime was shortened gradually. The quenching efficiency of CdSe/ZnS core/shell quantum dots decreased with increasing the oxidation potential of organic charge transporting materials. Based on the analysis, two pathways in the photoluminescence quenching process have been defined: static quenching and dynamic quenching. The dynamic quenching is correlated with hole transporting from quantum dots to the charge transporting materials.</p></abstract>

The effect of different organic charge transporting materials on the photoluminescence of CdSe/ZnS core/shell quantum dots has been studied by means of steady-state and time-resolved photoluminescence spectroscopy. With an increase in concentration of the organic charge transporting material in the quantum dots solutions, the photoluminescence intensity of CdSe/ZnS quantum dots was quenched greatly and the fluorescence lifetime was shortened gradually. The quenching efficiency of CdSe/ZnS core/shell quantum dots decreased with increasing the oxidation potential of organic charge transporting materials. Based on the analysis, two pathways in the photoluminescence quenching process have been defined: static quenching and dynamic quenching. The dynamic quenching is correlated with hole transporting from quantum dots to the charge transporting materials.

Investigation on photoluminescence quenching of CdSe/ZnS quantum dots by organic charge transporting materials

Department of Optoelectric Information Science and Engineering

Harbin University of Science and Technology

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The effect of different organic charge transporting materials on the photoluminescence of CdSe/ZnS core/shell quantum dots has been studied by means of...

Investigation on photoluminescence quenching of CdSe/ZnS quantum dots by organic charge transporting materials

Pubblicato online: 06 gen 2016

Pagine: 709 - 713

Ricevuto: 30 ott 2014

Accettato: 11 ott 2015

DOI: https://doi.org/10.1515/msp-2015-0120

Parole chiave
quantum dots, charge transporting, photoluminescence quenching

© 2015 Qu Yuqiu et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Investigation on photoluminescence quenching of CdSe/ZnS quantum dots by organic charge transporting materials

Pubblicato online: 06 gen 2016

Pagine: 709 - 713

Ricevuto: 30 ott 2014

Accettato: 11 ott 2015

DOI: https://doi.org/10.1515/msp-2015-0120

Parole chiavequantum dots, charge transporting, photoluminescence quenching

© 2015 Qu Yuqiu et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parole chiave
quantum dots, charge transporting, photoluminescence quenching