Multiple exciton generation and dynamics in InP/CdS colloidal quantum dots

Smith, CT, Leontiadou, M ORCID: https://orcid.org/0000-0003-2616-1841, Clark, PCJ, Lydon, C, Savjani, N, Spencer, BF, Flavell, WR, O'Brien, P and Binks, DJ 2017, 'Multiple exciton generation and dynamics in InP/CdS colloidal quantum dots' , The Journal of Physical Chemistry C, 121 (4) , pp. 2099-2107.

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Abstract

We report measurements of multiple exciton generation and recombination in InP/CdS (core/shell) colloidal quantum dots. Ultrafast transient absorption spectroscopy was used to measure the subnanosecond charge dynamics for a range of pump fluences and for different pump photon energies. Analysis of the resulting transients was used to determine the quantum yield of multiple exciton generation, which was found to be 1.22 ± 0.01 for a pump photon energy equivalent to three times the band gap.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: The Journal of Physical Chemistry C
Publisher: ACS Publications
ISSN: 1932-7447
Related URLs:
Funders: Engineering and Physical Sciences Research Council (EPSRC)
Depositing User: Dr MARINA LEONTIADOU
Date Deposited: 02 Apr 2019 07:49
Last Modified: 02 Apr 2019 08:00
URI: http://usir.salford.ac.uk/id/eprint/50843

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