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    Nonfullerene-Based Organic Photodetectors for Ultrahigh Sensitivity Visible Light Detection

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    Name:
    Gasparini_ACS_main text_accepted_version.pdf
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    Format:
    PDF
    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Bristow, Helen
    Jacoutot, Polina
    Scaccabarozzi, Alberto D. cc
    Babics, Maxime
    Moser, Maximilian cc
    Wadsworth, Andrew cc
    Anthopoulos, Thomas D. cc
    Bakulin, Artem cc
    McCulloch, Iain cc
    Gasparini, Nicola cc
    KAUST Department
    KAUST Solar Center (KSC)
    Physical Science and Engineering (PSE) Division
    Material Science and Engineering Program
    Chemical Science Program
    KAUST Grant Number
    OSR- 2018-CARF/CCF3079
    OSR-2015-CRG4-2572
    OSR -4106 CPF2019.
    Date
    2020-10-15
    Online Publication Date
    2020-10-15
    Print Publication Date
    2020-10-28
    Embargo End Date
    2021-10-15
    Submitted Date
    2020-08-04
    Permanent link to this record
    http://hdl.handle.net/10754/665765
    
    Metadata
    Show full item record
    Abstract
    It is well established that for organic photodetectors (OPDs) to compete with their inorganic counterparts, low dark currents at reverse bias must be achieved. Here, two rhodanine-terminated nonfullerene acceptors O-FBR and O-IDTBR are shown to deliver low dark currents at -2 V of 0.17 and 0.84 nA cm-2, respectively, when combined with the synthetically scalable polymer PTQ10 in OPD. These low dark currents contribute to the excellent sensitivity to low light of the detectors, reaching values of 0.57 μW cm-2 for PTQ10:O-FBR-based OPD and 2.12 μW cm-2 for PTQ10:O-IDTBR-based OPD. In both cases, this sensitivity exceeds that of a commercially available silicon photodiode. The responsivity of the PTQ10:O-FBR-based OPD of 0.34 AW-1 under a reverse bias of -2 V also exceeds that of a silicon photodiode. Meanwhile, the responsivity of the PTQ10:O-IDTBR of 0.03 AW-1 is limited by the energetic offset of the blend. The OPDs deliver high specific detectivities of 9.6 × 1012 Jones and 3.3 × 1011 Jones for O-FBR- and O-IDTBR-based blends, respectively. Both active layers are blade-coated in air, making them suitable for high-throughput methods. Finally, all three of the materials can be synthesized at low cost and on a large scale, making these blends good candidates for commercial OPD applications.
    Citation
    Bristow, H., Jacoutot, P., Scaccabarozzi, A. D., Babics, M., Moser, M., Wadsworth, A., … Gasparini, N. (2020). Nonfullerene-Based Organic Photodetectors for Ultrahigh Sensitivity Visible Light Detection. ACS Applied Materials & Interfaces. doi:10.1021/acsami.0c14016
    Sponsors
    GIWAXS experiments were performed at BL11 NCD-SWEET beamline at ALBA Synchrotron (Spain) with the collaboration of Dr Eduardo Solano. N.G. Acknowledges the Imperial College Research Fellowship Scheme. The authors acknowledge the funding from EC FP7 Project SC2 (610115), ECH2020 (643791), EPSRC Projects EP/G037515/1, EP/M005143/1, and EP/L016702/1 and from King Abdullah University of Science and Technology Office of Sponsored Research (OSR) under Award nos. OSR- 2018-CARF/CCF3079, OSR-2015-CRG4-2572, and OSR -4106 CPF2019.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Applied Materials & Interfaces
    DOI
    10.1021/acsami.0c14016
    PubMed ID
    33054156
    Additional Links
    https://pubs.acs.org/doi/10.1021/acsami.0c14016
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsami.0c14016
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; Material Science and Engineering Program; KAUST Solar Center (KSC)

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