Imperial College London

ProfessorJamesDurrant

Faculty of Natural SciencesDepartment 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{Baran:2018:10.1038/s41467-018-04502-3,
author = {Baran, D and Gasparini, N and Wadsworth, A and Tan, CH and Wehbe, N and Song, X and Hamid, Z and Zhang, W and Neophytou, M and Kirchartz, T and Brabec, CJ and Durrant, JR and McCulloch, I},
doi = {10.1038/s41467-018-04502-3},
journal = {Nature Communications},
title = {Robust nonfullerene solar cells approaching unity external quantum efficiency enabled by suppression of geminate recombination},
url = {http://dx.doi.org/10.1038/s41467-018-04502-3},
volume = {9},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Nonfullerene solar cells have increased their efficiencies up to 13%, yet quantum efficiencies are still limited to 80%. Here we report efficient nonfullerene solar cells with quantum efficiencies approaching unity. This is achieved with overlapping absorption bands of donor and acceptor that increases the photon absorption strength in the range from about 570 to 700 nm, thus, almost all incident photons are absorbed in the active layer. The charges generated are found to dissociate with negligible geminate recombination losses resulting in a short-circuit current density of 20 mA cm−2 along with open-circuit voltages >1 V, which is remarkable for a 1.6 eV bandgap system. Most importantly, the unique nano-morphology of the donor:acceptor blend results in a substantially improved stability under illumination. Understanding the efficient charge separation in nonfullerene acceptors can pave the way to robust and recombination-free organic solar cells.
AU - Baran,D
AU - Gasparini,N
AU - Wadsworth,A
AU - Tan,CH
AU - Wehbe,N
AU - Song,X
AU - Hamid,Z
AU - Zhang,W
AU - Neophytou,M
AU - Kirchartz,T
AU - Brabec,CJ
AU - Durrant,JR
AU - McCulloch,I
DO - 10.1038/s41467-018-04502-3
PY - 2018///
SN - 2041-1723
TI - Robust nonfullerene solar cells approaching unity external quantum efficiency enabled by suppression of geminate recombination
T2 - Nature Communications
UR - http://dx.doi.org/10.1038/s41467-018-04502-3
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000433066900003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/65085
VL - 9
ER -