Imperial College London
Portrait Picture

Professor James Durrant, CBE, FRS

Faculty of Natural Sciences, Department of Chemistry

Professor of Photochemistry
 
 
 
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Contact

 

+44 (0)20 7594 5321j.durrant Website

 
 
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Assistant

 

Miss Lisa Benbow +44 (0)20 7594 5883

 
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Location

 

G22CMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Tan:2019:10.1021/acs.jpcc.8b10918,
author = {Tan, CH and Wadsworth, A and Gasparini, N and Wheeler, S and Holliday, S and Ashraf, RS and Dimitrov, SD and Baran, D and McCulloch, I and Durrant, JR},
doi = {10.1021/acs.jpcc.8b10918},
journal = {Journal of Physical Chemistry C},
pages = {5826--5832},
title = {Excitation Wavelength-Dependent Internal Quantum Efficiencies in a P3HT/Nonfullerene Acceptor Solar Cell},
url = {http://dx.doi.org/10.1021/acs.jpcc.8b10918},
volume = {123},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - © 2018 American Chemical Society. Solar cells based on blends of the donor polymer, P3HT, with the nonfullerene acceptor, O-IDTBR, have been shown to exhibit promising efficiencies and stabilities for low-cost organic photovoltaic devices. We focus herein on the charge separation and recombination dynamics in such devices. By employing selective wavelength excitations of P3HT and O-IDTBR, we show that photoexcitation of P3HT results in lower internal quantum efficiency (IQE) for photocurrent generation than that observed for photoexcitation of O-IDTBR. Transient absorption and photoluminescence quenching studies indicate that this lower IQE results primarily from higher geminate recombination losses of photogenerated charges following P3HT excitation compared with O-IDTBR excitation, rather than from differences in exciton separation efficiency. These higher geminate recombination losses result in lower photocurrent generation efficiency at short circuit upon selective excitation of the P3HT donor, when compared with O-IDTBR excitation.
AU  - Tan,CH
AU  - Wadsworth,A
AU  - Gasparini,N
AU  - Wheeler,S
AU  - Holliday,S
AU  - Ashraf,RS
AU  - Dimitrov,SD
AU  - Baran,D
AU  - McCulloch,I
AU  - Durrant,JR
DO  - 10.1021/acs.jpcc.8b10918
EP  - 5832
PY  - 2019///
SN  - 1932-7447
SP  - 5826
TI  - Excitation Wavelength-Dependent Internal Quantum Efficiencies in a P3HT/Nonfullerene Acceptor Solar Cell
T2  - Journal of Physical Chemistry C
UR  - http://dx.doi.org/10.1021/acs.jpcc.8b10918
VL  - 123
ER  -
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