Multiple Exciton Generation and Dynamics in InP/CdS Colloidal Quantum Dots

Authors :: Marina A. Leontiadou
Pip C. J. Clark
Claire Lydon
Wendy R. Flavell
Charles Smith
Ben F. Spencer
David J. Binks
Paul O'Brien
Nicky Savjani
Source :: Smith, C, Leontiadou, M, Clark, P, Lydon, C, Savjani, N, Spencer, B, Flavell, W, O'Brien, P & Binks, D 2017, ' Multiple Exciton Generation and Dynamics in InP/CdS Colloidal Quantum Dots ', Journal of Physical Chemistry C, vol. 121, no. 4 . https://doi.org/10.1021/acs.jpcc.6b11744
Publication Year :: 2017
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 sub-nanosecond 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.

Language :: English
ISSN :: 19327447
Database :: OpenAIRE
Journal :: Smith, C, Leontiadou, M, Clark, P, Lydon, C, Savjani, N, Spencer, B, Flavell, W, O'Brien, P & Binks, D 2017, ' Multiple Exciton Generation and Dynamics in InP/CdS Colloidal Quantum Dots ', Journal of Physical Chemistry C, vol. 121, no. 4 . https://doi.org/10.1021/acs.jpcc.6b11744
Accession number :: edsair.doi.dedup.....703108115afdd851531fe6d5f73bfef7
Full Text :: https://doi.org/10.1021/acs.jpcc.6b11744