Imperial College London
Alternate

DrArtemBakulin

Faculty of Natural Sciences, Department of Chemistry

Reader in Physical Chemistry
 
 
 
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G22aMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Qian:2018:10.1038/s41563-018-0128-z,
author = {Qian, D and Zheng, Z and Yao, H and Tress, W and Hopper, T and Chen, S and Li, S and Liu, J and Chen, S and Zhang, J and Liu, X-K and Gao, B and Ouyang, L and Jin, Y and Pozina, G and Buyanova, I and Chen, W and Inganäs, O and Coropceanu, V and Bredas, J-L and Yan, H and Hou, J and Zhang, F and Bakulin, A and Gao, F},
doi = {10.1038/s41563-018-0128-z},
journal = {Nature Materials},
pages = {703--709},
title = {Design rules for minimizing voltage losses in high-efficiency organic solar cells},
url = {http://dx.doi.org/10.1038/s41563-018-0128-z},
volume = {17},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The open-circuit voltage of organic solar cells is usually lower than the values achieved in inorganic or perovskite photovoltaic devices with comparable bandgaps. Energy losses during charge separation at the donor–acceptor interface and non-radiative recombination are among the main causes of such voltage losses. Here we combine spectroscopic and quantum-chemistry approaches to identify key rules for minimizing voltage losses: (1) a low energy offset between donor and acceptor molecular states and (2) high photoluminescence yield of the low-gap material in the blend. Following these rules, we present a range of existing and new donor–acceptor systems that combine efficient photocurrent generation with electroluminescence yield up to 0.03%, leading to non-radiative voltage losses as small as 0.21 V. This study provides a rationale to explain and further improve the performance of recently demonstrated high-open-circuit-voltage organic solar cells.
AU  - Qian,D
AU  - Zheng,Z
AU  - Yao,H
AU  - Tress,W
AU  - Hopper,T
AU  - Chen,S
AU  - Li,S
AU  - Liu,J
AU  - Chen,S
AU  - Zhang,J
AU  - Liu,X-K
AU  - Gao,B
AU  - Ouyang,L
AU  - Jin,Y
AU  - Pozina,G
AU  - Buyanova,I
AU  - Chen,W
AU  - Inganäs,O
AU  - Coropceanu,V
AU  - Bredas,J-L
AU  - Yan,H
AU  - Hou,J
AU  - Zhang,F
AU  - Bakulin,A
AU  - Gao,F
DO  - 10.1038/s41563-018-0128-z
EP  - 709
PY  - 2018///
SN  - 1476-1122
SP  - 703
TI  - Design rules for minimizing voltage losses in high-efficiency organic solar cells
T2  - Nature Materials
UR  - http://dx.doi.org/10.1038/s41563-018-0128-z
UR  - https://www.nature.com/articles/s41563-018-0128-z
UR  - http://hdl.handle.net/10044/1/61247
VL  - 17
ER  -
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