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A novel selenophene based non-fullerene acceptor for near-infrared organic photodetectors with ultra-low dark current
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Qiao He ,
Alberto D. Scaccabarozzi,
Julianna Panidi ,
Adam Marsh,
Yang Han,
Polina Jacoutot,
Davide Nodari,
Tianyi Zhang,
Amirah Way,
Andrew J. P. White,
Thomas D. Anthopoulos ,
Wing Chung Tsoi ,
Artem A. Bakulin ,
Martin Heeney ,
Zhuping Fei ,
Nicola Gasparini
Journal of Materials Chemistry C, Volume: 12, Issue: 16, Pages: 5766 - 5775
Swansea University Author:
Wing Chung Tsoi
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DOI (Published version): 10.1039/d3tc04678h
Abstract
Near-infrared organic photodetectors (OPDs) have great potential in many applications. However, the high dark current of many OPD devices tends to limit their specific detectivity and overall performance. Here we report a novel non-fullerene acceptor (IDSe) based on an alkylated indacenodiselenophen...
| Published in: | Journal of Materials Chemistry C |
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| ISSN: | 2050-7526 2050-7534 |
| Published: |
Royal Society of Chemistry (RSC)
2024
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa66492 |
| Abstract: |
Near-infrared organic photodetectors (OPDs) have great potential in many applications. However, the high dark current of many OPD devices tends to limit their specific detectivity and overall performance. Here we report a novel non-fullerene acceptor (IDSe) based on an alkylated indacenodiselenophene core, with extended light absorption up to 800 nm. When blended with the donor polymer PTQ10, we obtained OPD devices with an exceptionally low dark current density of 1.65 nA cm−2 at −2 V, high responsivity and specific detectivity exceeding 1012 Jones at 790 nm. The superior properties of PTQ10:IDSe devices are related to the higher and more balanced charge carrier mobility compared to the analogous thiophene based blend (PTQ10:IDIC). We also demonstrate large area PTQ10:IDSe based devices by doctor blade in air with a record low dark current of 1.2 × 10−7 A cm−2 under −2 V bias. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
The authors thank the Engineering and Physics Science Research Council (EPSRC) (EP/T028513/1 and EP/V057839/1), the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR-2020-CRG8-4095 and ORFS-2023-OFP-5544, NSG Pilkington, the M2A funding from the European Social Fund through the Welsh Government. We are grateful to the SPECIFIC Innovation and Knowledge Centre (EP/N020863/1). A.D.S would like to thank the ALBA synchrotron (BL11 NCD-SWEET beamline) and staff, in particular Dr Eduardo Solano, for their help with the GIWAXS measurements. |
| Issue: |
16 |
| Start Page: |
5766 |
| End Page: |
5775 |