1. Balanced charge transport optimizes industry-relevant ternary polymer solar cells
- Author
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Harald Ade, Guillaume Wantz, Sylvain Chambon, Stéphanie Courtel, Samuel J. Stuard, Uyxing Vongsaysy, Reece Henry, Robin Szymanski, Mélanie Bertrand, Luc Vellutini, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), ARMOR SAS, North Carolina A&T State University, University of North Carolina System (UNC), Institut des Sciences Moléculaires (ISM), Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratory for Integrated Micro Mechatronics Systems (LIMMS), and The University of Tokyo (UTokyo)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Materials science ,Energy Engineering and Power Technology ,Charge (physics) ,Polymer solar cells ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,7. Clean energy ,Atomic and Molecular Physics, and Optics ,Polymer solar cell ,0104 chemical sciences ,Electronic, Optical and Magnetic Materials ,non-chlorinated solvent ,[SPI.MAT]Engineering Sciences [physics]/Materials ,Chemical physics ,low-cost semiconducting polymer ,Electrical and Electronic Engineering ,0210 nano-technology ,Ternary operation - Abstract
International audience; Bulk heterojunction polymer solar cells based on a novel combination of materials are fabricated using industry-compliant conditions for large area manufacturing. The relatively low-cost polymer PTQ10 is paired with the non-fullerene acceptor 4TIC-4F. Devices are processed using a non-halogenated solvent to comply with industrial usage in absence of any thermal treatment to minimize the energy footprint of the fabrication. No solvent additive is used. Adding the well-known and low-cost fullerene derivative PC61BM acceptor to this binary blend to form a ternary blend, the power conversion efficiency (PCE) was improved from 8.4% to 9.9% due to increased fill factor (FF) and open circuit voltage (VOC), while simultaneously improving the stability. The introduction of PC61BM is able to balance the hole-electron mobility in the ternary blends, which is favourable for high FF. This charge transport behavior is correlated with the bulk heterojunction (BHJ) morphology deduced from Grazing-Incidence Wide-Angle X-ray Scattering (GIWAXS), Atomic Force Microscopy (AFM) and surface energy analysis. In addition, the industrial figure of merit (i-FOM) of this ternary blend was found to increase drastically upon addition of PC61BM due to an increased performancestability-cost balance.
- Published
- 2020
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