Статья

A molecular nematic liquid crystalline material for high-performance organic photovoltaics

Kuan Sun1] School of Chemistry, Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia [2] Department of Materials Science and Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore [3] Department of Renewable Energy, School of Power Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing 400044, ChinaZeyun XiaoSchool of Chemistry, Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, AustraliaShirong LuSchool of Chemistry, Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, AustraliaWojciech ZajączkowskiMax Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, GermanyWojciech PisulaMax Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, GermanyEric HanssenAdvanced Microscopy Facility, Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, AustraliaJonathan M. WhiteSchool of Chemistry, Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, AustraliaRachel WilliamsonMX Beamlines, Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, AustraliaJegadesan SubbiahSchool of Chemistry, Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, AustraliaJianyong OuyangDepartment of Materials Science and Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, SingaporeAndrew B. HolmesSchool of Chemistry, Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, AustraliaWallace W. H. WongSchool of Chemistry, Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, AustraliaDavid J. JonesSchool of Chemistry, Bio21 Institute, The University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia

2015en

ABI

Аннотация

Solution-processed organic photovoltaic cells (OPVs) hold great promise to enable roll-to-roll printing of environmentally friendly, mechanically flexible and cost-effective photovoltaic devices. Nevertheless, many high-performing systems show best power conversion efficiencies (PCEs) with a thin active layer (thickness is ~100 nm) that is difficult to translate to roll-to-roll processing with high reproducibility. Here we report a new molecular donor, benzodithiophene terthiophene rhodanine (BTR), which exhibits good processability, nematic liquid crystalline behaviour and excellent optoelectronic properties. A maximum PCE of 9.3% is achieved under AM 1.5G solar irradiation, with fill factor reaching 77%, rarely achieved in solution-processed OPVs. Particularly promising is the fact that BTR-based devices with active layer thicknesses up to 400 nm can still afford high fill factor of ~70% and high PCE of ~8%. Together, the results suggest, with better device architectures for longer device lifetime, BTR is an ideal candidate for mass production of OPVs.

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Идентификаторы

DOI: 10.1038/ncomms7013

Цитирования и источники

Цитирований: 4Использованных источников: 0

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