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{Lee:2023:10.1038/s41467-023-37234-0,
author = {Lee, TH and Fu, Y and Chin, Y-C and Pacalaj, R and Labanti, C and Park, SY and Dong, Y and Cho, HW and Kim, JY and Minami, D and Durrant, JR and Kim, J-S},
doi = {10.1038/s41467-023-37234-0},
journal = {Nature Communications},
pages = {1--12},
title = {Molecular orientation-dependent energetic shifts in solution-processed non-fullerene acceptors and their impact on organic photovoltaic performance},
url = {http://dx.doi.org/10.1038/s41467-023-37234-0},
volume = {14},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The non-fullerene acceptors (NFAs) employed in state-of-art organic photovoltaics (OPVs) often exhibit strong quadrupole moments which can strongly impact on material energetics. Herein, we show that changing the orientation of Y6, a prototypical NFA, from face-on to more edge-on by using different processing solvents causes a significant energetic shift of up to 210 meV. The impact of this energetic shift on OPV performance is investigated in both bilayer and bulk-heterojunction (BHJ) devices with PM6 polymer donor. The device electronic bandgap and the rate of non-geminate recombination are found to depend on the Y6 orientation in both bilayer and BHJ devices, attributed to the quadrupole moment-induced band bending. Analogous energetic shifts are also observed in other common polymer/NFA blends, which correlates well with NFA quadrupole moments. This work demonstrates the key impact of NFA quadruple moments and molecular orientation on material energetics and thereby on the efficiency of high-performance OPVs.
AU  - Lee,TH
AU  - Fu,Y
AU  - Chin,Y-C
AU  - Pacalaj,R
AU  - Labanti,C
AU  - Park,SY
AU  - Dong,Y
AU  - Cho,HW
AU  - Kim,JY
AU  - Minami,D
AU  - Durrant,JR
AU  - Kim,J-S
DO  - 10.1038/s41467-023-37234-0
EP  - 12
PY  - 2023///
SN  - 2041-1723
SP  - 1
TI  - Molecular orientation-dependent energetic shifts in solution-processed non-fullerene acceptors and their impact on organic photovoltaic performance
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-023-37234-0
UR  - https://www.nature.com/articles/s41467-023-37234-0
UR  - http://hdl.handle.net/10044/1/103001
VL  - 14
ER  -
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