@article{Wadsworth:2017:10.1021/acsenergylett.7b00390,
author = {Wadsworth, A and Ashraf, RS and Abdelsamie, M and Pont, S and Little, M and Moser, M and Hamid, Z and Neophytou, M and Zhang, W and Amassian, A and Durrant, JR and Baran, D and McCulloch, I},
doi = {10.1021/acsenergylett.7b00390},
journal = {ACS Energy Letters},
pages = {1494--1500},
title = {Highly efficient and reproducible nonfullerene solar cells from hydrocarbon solvents},
url = {http://dx.doi.org/10.1021/acsenergylett.7b00390},
volume = {2},
year = {2017}
}

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TY  - JOUR
AB  - With chlorinated solvents unlikely to be permitted for use in solution-processed organic solar cells in industry, there must be a focus on developing nonchlorinated solvent systems. Here we report high-efficiency devices utilizing a low-bandgap donor polymer (PffBT4T-2DT) and a nonfullerene acceptor (EH-IDTBR) from hydrocarbon solvents and without using additives. When mesitylene was used as the solvent, rather than chlorobenzene, an improved power conversion efficiency (11.1%) was achieved without the need for pre- or post-treatments. Despite altering the processing conditions to environmentally friendly solvents and room-temperature coating, grazing incident X-ray measurements confirmed that active layers processed from hydrocarbon solvents retained the robust nanomorphology obtained with hot-processed chlorinated solvents. The main advantages of hydrocarbon solvent-processed devices, besides the improved efficiencies, were the reproducibility and storage lifetime of devices. Mesitylene devices showed better reproducibility and shelf life up to 4000 h with PCE dropping by only 8% of its initial value.
AU  - Wadsworth,A
AU  - Ashraf,RS
AU  - Abdelsamie,M
AU  - Pont,S
AU  - Little,M
AU  - Moser,M
AU  - Hamid,Z
AU  - Neophytou,M
AU  - Zhang,W
AU  - Amassian,A
AU  - Durrant,JR
AU  - Baran,D
AU  - McCulloch,I
DO  - 10.1021/acsenergylett.7b00390
EP  - 1500
PY  - 2017///
SN  - 2380-8195
SP  - 1494
TI  - Highly efficient and reproducible nonfullerene solar cells from hydrocarbon solvents
T2  - ACS Energy Letters
UR  - http://dx.doi.org/10.1021/acsenergylett.7b00390
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000405979900004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/50590
VL  - 2
ER  - 

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