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    Efficient DPP Donor and Nonfullerene Acceptor Organic Solar Cells with High Photon-to-Current Ratio and Low Energetic Loss

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    Type
    Article
    Authors
    Song, Xin cc
    Gasparini, Nicola
    Nahid, Masrur Morshed
    Paleti, Sri Harish Kumar
    Li, Cheng
    Li, Weiwei
    Ade, Harald
    Baran, Derya cc
    KAUST Department
    KAUST Solar Center (KSC)
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    NSFC 21574138
    NSFC 91633301
    N000141712204
    Date
    2019-06-20
    Embargo End Date
    2020-06-21
    Permanent link to this record
    http://hdl.handle.net/10754/656371
    
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    Abstract
    The high crystallinity and ability to harvest near-infrared photons make diketopyrrolopyrrole (DPP)-based polymers one of the most promising donors for high performing organic solar cells (OSCs). However, DPP-based OSC devices still suffer from the trade-off between energetic loss (Eloss) and maximum external quantum efficiency (EQEmax), which significantly hinders their potential. Thus far, the replacement of fullerenes with small molecule acceptors did not wisdom the performance development of DPP-donor-based solar cells due to severe charge recombination issues. In this work, efficient DPP-based solar cells are reported using low bandgap fused ring electron acceptor, IEICO-4F. PBDTT-DPP:IEICO-4F OSC devices deliver a champion power conversion efficiency of 9.66% with successful interface engineering along with low Eloss of 0.57 eV and a high EQEmax (>70%).
    Citation
    Song, X., Gasparini, N., Nahid, M. M., Paleti, S. H. K., Li, C., Li, W., … Baran, D. (2019). Efficient DPP Donor and Nonfullerene Acceptor Organic Solar Cells with High Photon-to-Current Ratio and Low Energetic Loss. Advanced Functional Materials, 1902441. doi:10.1002/adfm.201902441
    Sponsors
    D.B. acknowledges KAUST Solar Center Fund (CARF) for financial support. W.L. thanks the financial support from NSFC (21574138 and 91633301). GIWAXS measurement and analysis, done by M.M.N. and H.A., were supported by ONR grant N000141712204 and KAUST's Center Partnership Fund (No. 3321). X-ray data were acquired at beamlines 7.3.3 at the Advanced Light Source (ALS) in Berkeley National Lab, which is supported by the U.S. Department of Energy (DE-AC02-05CH11231). Z. Peng, S. Stuard, and I. Angunawela assisted with the GIWAXS data acquisition. C. Zhu is acknowledged for the beamline support
    Publisher
    Wiley
    Journal
    Advanced Functional Materials
    DOI
    10.1002/adfm.201902441
    Additional Links
    http://doi.wiley.com/10.1002/adfm.201902441
    ae974a485f413a2113503eed53cd6c53
    10.1002/adfm.201902441
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; KAUST Solar Center (KSC)

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