Ternary organic photodetectors based on pseudo-binaries nonfullerene-based acceptors

Tianyi Zhang; Maximilian Moser; Alberto D. Scaccabarozzi; Helen Bristow; Polina Jacoutot; Andrew Wadsworth; Thomas D. Anthopoulos; Iain McCulloch; Nicola Gasparini

doi:10.1088/2515-7639/ac0c0a

Ternary organic photodetectors based on pseudo-binaries nonfullerene-based acceptors

Tianyi Zhang, Maximilian Moser, Alberto D. Scaccabarozzi, Helen Bristow, Polina Jacoutot, Andrew Wadsworth, Thomas D. Anthopoulos, Iain McCulloch, Nicola Gasparini

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The addition of a third component to a donor:acceptor blend is a powerful tool to enhance the power conversion efficiency of organic solar cells. Featuring a similar operating mechanism, organic photodetectors are also expected to benefit from this approach. Here, we fabricated ternary organic photodetectors, based on a polymer donor and two nonfullerene acceptors, resulting in a low dark current of 0.42 nA cm-2 at -2 V and a broadband specific detectivity of 1012 Jones. We found that exciton recombination in the binary blend is reduced in ternary devices due to the formation of a pseudo-binary microstructure with mixed donor-acceptor phases. With this approach a wide range of intermediate open-circuit voltages is accessible, without sacrificing light-to-current conversion. This results in ternary OPD with improved R values in the NIR. Moreover, morphology analyses reveal that ternary OPD devices showed improved microstructure ordering and consequentially higher charge carrier mobilities compared to the reference devices.

Original language	English (US)
Journal	Journal of Physics: Materials
DOIs	https://doi.org/10.1088/2515-7639/ac0c0a
State	Published - Jun 16 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-06-22
Acknowledged KAUST grant number(s): OSR-2018-CRG/CCF-3079, OSR-2018-CRG7-3749, OSR-2019-CRG8-4086
Acknowledgements: N.G. Acknowledges the Imperial College Research Fellowship Scheme. GIWAXS experiments were performed at BL11 NCD-SWEET beamline at ALBA Synchrotron (Spain) with the collaboration of Dr Eduardo Solano. The authors acknowledge financial support from KAUST, including Office of Sponsored Research (OSR) awards no. OSR-2018-CRG/CCF-3079, OSR-2019-CRG8-4086 and OSR-2018-CRG7-3749. We acknowledge funding from ERC Synergy Grant SC2 (610115), the European Union’s Horizon 2020 research and innovation programme under grant agreement n° 952911, project BOOSTER, and grant agreement n° 862474, project RoLA-FLEX, as
well as EPSRC Project EP/T026219/1.

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10.1088/2515-7639/ac0c0a

https://repository.kaust.edu.sa/bitstream/10754/669740/1/Ternary_Zhang%2bet%2bal_2021_J._Phys._Mater._10.1088_2515-7639_ac0c0a.pdf

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@article{c4a25d06a3b244fe988ed087d5813261,

title = "Ternary organic photodetectors based on pseudo-binaries nonfullerene-based acceptors",

abstract = "The addition of a third component to a donor:acceptor blend is a powerful tool to enhance the power conversion efficiency of organic solar cells. Featuring a similar operating mechanism, organic photodetectors are also expected to benefit from this approach. Here, we fabricated ternary organic photodetectors, based on a polymer donor and two nonfullerene acceptors, resulting in a low dark current of 0.42 nA cm-2 at -2 V and a broadband specific detectivity of 1012 Jones. We found that exciton recombination in the binary blend is reduced in ternary devices due to the formation of a pseudo-binary microstructure with mixed donor-acceptor phases. With this approach a wide range of intermediate open-circuit voltages is accessible, without sacrificing light-to-current conversion. This results in ternary OPD with improved R values in the NIR. Moreover, morphology analyses reveal that ternary OPD devices showed improved microstructure ordering and consequentially higher charge carrier mobilities compared to the reference devices.",

author = "Tianyi Zhang and Maximilian Moser and Scaccabarozzi, {Alberto D.} and Helen Bristow and Polina Jacoutot and Andrew Wadsworth and Anthopoulos, {Thomas D.} and Iain McCulloch and Nicola Gasparini",

note = "KAUST Repository Item: Exported on 2021-06-22 Acknowledged KAUST grant number(s): OSR-2018-CRG/CCF-3079, OSR-2018-CRG7-3749, OSR-2019-CRG8-4086 Acknowledgements: N.G. Acknowledges the Imperial College Research Fellowship Scheme. GIWAXS experiments were performed at BL11 NCD-SWEET beamline at ALBA Synchrotron (Spain) with the collaboration of Dr Eduardo Solano. The authors acknowledge financial support from KAUST, including Office of Sponsored Research (OSR) awards no. OSR-2018-CRG/CCF-3079, OSR-2019-CRG8-4086 and OSR-2018-CRG7-3749. We acknowledge funding from ERC Synergy Grant SC2 (610115), the European Union{\textquoteright}s Horizon 2020 research and innovation programme under grant agreement n° 952911, project BOOSTER, and grant agreement n° 862474, project RoLA-FLEX, as well as EPSRC Project EP/T026219/1.",

year = "2021",

month = jun,

day = "16",

doi = "10.1088/2515-7639/ac0c0a",

language = "English (US)",

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T1 - Ternary organic photodetectors based on pseudo-binaries nonfullerene-based acceptors

AU - Zhang, Tianyi

AU - Moser, Maximilian

AU - Scaccabarozzi, Alberto D.

AU - Bristow, Helen

AU - Jacoutot, Polina

AU - Wadsworth, Andrew

AU - Anthopoulos, Thomas D.

AU - McCulloch, Iain

AU - Gasparini, Nicola

N1 - KAUST Repository Item: Exported on 2021-06-22 Acknowledged KAUST grant number(s): OSR-2018-CRG/CCF-3079, OSR-2018-CRG7-3749, OSR-2019-CRG8-4086 Acknowledgements: N.G. Acknowledges the Imperial College Research Fellowship Scheme. GIWAXS experiments were performed at BL11 NCD-SWEET beamline at ALBA Synchrotron (Spain) with the collaboration of Dr Eduardo Solano. The authors acknowledge financial support from KAUST, including Office of Sponsored Research (OSR) awards no. OSR-2018-CRG/CCF-3079, OSR-2019-CRG8-4086 and OSR-2018-CRG7-3749. We acknowledge funding from ERC Synergy Grant SC2 (610115), the European Union’s Horizon 2020 research and innovation programme under grant agreement n° 952911, project BOOSTER, and grant agreement n° 862474, project RoLA-FLEX, as well as EPSRC Project EP/T026219/1.

PY - 2021/6/16

Y1 - 2021/6/16

N2 - The addition of a third component to a donor:acceptor blend is a powerful tool to enhance the power conversion efficiency of organic solar cells. Featuring a similar operating mechanism, organic photodetectors are also expected to benefit from this approach. Here, we fabricated ternary organic photodetectors, based on a polymer donor and two nonfullerene acceptors, resulting in a low dark current of 0.42 nA cm-2 at -2 V and a broadband specific detectivity of 1012 Jones. We found that exciton recombination in the binary blend is reduced in ternary devices due to the formation of a pseudo-binary microstructure with mixed donor-acceptor phases. With this approach a wide range of intermediate open-circuit voltages is accessible, without sacrificing light-to-current conversion. This results in ternary OPD with improved R values in the NIR. Moreover, morphology analyses reveal that ternary OPD devices showed improved microstructure ordering and consequentially higher charge carrier mobilities compared to the reference devices.

AB - The addition of a third component to a donor:acceptor blend is a powerful tool to enhance the power conversion efficiency of organic solar cells. Featuring a similar operating mechanism, organic photodetectors are also expected to benefit from this approach. Here, we fabricated ternary organic photodetectors, based on a polymer donor and two nonfullerene acceptors, resulting in a low dark current of 0.42 nA cm-2 at -2 V and a broadband specific detectivity of 1012 Jones. We found that exciton recombination in the binary blend is reduced in ternary devices due to the formation of a pseudo-binary microstructure with mixed donor-acceptor phases. With this approach a wide range of intermediate open-circuit voltages is accessible, without sacrificing light-to-current conversion. This results in ternary OPD with improved R values in the NIR. Moreover, morphology analyses reveal that ternary OPD devices showed improved microstructure ordering and consequentially higher charge carrier mobilities compared to the reference devices.

UR - http://hdl.handle.net/10754/669740

UR - https://iopscience.iop.org/article/10.1088/2515-7639/ac0c0a

U2 - 10.1088/2515-7639/ac0c0a

DO - 10.1088/2515-7639/ac0c0a

M3 - Article

SN - 2515-7639

JO - Journal of Physics: Materials

JF - Journal of Physics: Materials

ER -

Ternary organic photodetectors based on pseudo-binaries nonfullerene-based acceptors

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