Imperial College London
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Professor Jenny Nelson

Faculty of Natural Sciences, Department of Physics

Professor of Physics
 
 
 
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Contact

 

+44 (0)20 7594 7581jenny.nelson

 
 
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Location

 

1007Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Zhu:2022:10.1038/s41563-022-01244-y,
author = {Zhu, L and Zhang, M and Xu, J and Li, C and Yan, J and Zhou, G and Zhong, W and Hao, T and Song, J and Xue, X and Zhou, Z and Zeng, R and Zhu, H and Chen, C-C and MacKenzie, RC and Zou, Y and Nelson, J and Zhang, Y and Sun, Y and Liu, F},
doi = {10.1038/s41563-022-01244-y},
journal = {Nature Materials},
title = {Single-junction organic solar cells with over 19% efficiency enabled by a refined double-fibril network morphology},
url = {http://dx.doi.org/10.1038/s41563-022-01244-y},
volume = {21},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In organic photovoltaics, morphological control of donor and acceptor domains on the nanoscale is the key for enabling efficient exciton diffusion and dissociation, carrier transport and suppression of recombination losses. To realize this, here, we demonstrated a double-fibril network based on a ternary donor–acceptor morphology with multi-length scales constructed by combining ancillary conjugated polymer crystallizers and a non-fullerene acceptor filament assembly. Using this approach, we achieved an average power conversion efficiency of 19.3% (certified 19.2%). The success lies in the good match between the photoelectric parameters and the morphological characteristic lengths, which utilizes the excitons and free charges efficiently. This strategy leads to an enhanced exciton diffusion length and a reduced recombination rate, hence minimizing photon-to-electron losses in the ternary devices as compared to their binary counterparts. The double-fibril network morphology strategy minimizes losses and maximizes the power output, offering the possibility of 20% power conversion efficiencies in single-junction organic photovoltaics.
AU  - Zhu,L
AU  - Zhang,M
AU  - Xu,J
AU  - Li,C
AU  - Yan,J
AU  - Zhou,G
AU  - Zhong,W
AU  - Hao,T
AU  - Song,J
AU  - Xue,X
AU  - Zhou,Z
AU  - Zeng,R
AU  - Zhu,H
AU  - Chen,C-C
AU  - MacKenzie,RC
AU  - Zou,Y
AU  - Nelson,J
AU  - Zhang,Y
AU  - Sun,Y
AU  - Liu,F
DO  - 10.1038/s41563-022-01244-y
PY  - 2022///
SN  - 1476-1122
TI  - Single-junction organic solar cells with over 19% efficiency enabled by a refined double-fibril network morphology
T2  - Nature Materials
UR  - http://dx.doi.org/10.1038/s41563-022-01244-y
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000791057300002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.nature.com/articles/s41563-022-01244-y
UR  - http://hdl.handle.net/10044/1/97316
VL  - 21
ER  -
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