Journal
MATERIALS TODAY ENERGY
Volume 21, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mtener.2021.100708
Keywords
Organic photodetector; NIR; Transparent OPD; Image sensors; Solution fabrication process
Funding
- Research Grants Council, University Grants Committee of Hong Kong Special Administrative Region, China [12302817, 12303920, C5037-18 GF]
- NSFC/RGC Joint Research Scheme [N_HKBU201/19]
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The photoresponse of transparent self-powered near-infrared organic photodetectors with a high-conductivity polymer electrode was analyzed. The detectors showed high detectivity, cutoff frequency, and linear dynamic range, comparable to traditional opaque detectors.
The photoresponse of the transparent self-powered near-infrared (NIR) organic photodetectors (OPDs) with a high-conductivity poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate upper transparent electrode, prepared by a lamination transfer process, has been analyzed. The large-area transparent self powered NIR OPDs have a specific detectivity of >1012 Jones at 850 nm, a high-3 dB cutoff frequency of 71 kHz, and a linear dynamic range of 154 dB. The performance of the solution-processed transparent NIR OPDs is comparable to that of a control opaque NIR OPD with a 100 nm thick aluminum contact, providing a platform technology for a plethora of applications in self-powered monitoring systems, optical communications, image sensors, and Internet-of-Things. (c) 2021 Elsevier Ltd. All rights reserved.
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