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Enhancement of Phot...
Enhancement of Photosensitivity in a Low-Operating-Voltage Organic-Inorganic Bilayer Thin-Film Transistor by Using an Asymmetric Source-Drain Electrode
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- Aich, Pijush Kanti (författare)
- Banaras Hindu University
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- Wolkeba, Zewdneh Genene, 1983 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Pandey, Utkarsh (författare)
- Banaras Hindu University
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- Yadav, Akhilesh Kumar (författare)
- Banaras Hindu University
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- Wang, Ergang, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Pal, Bhola Nath (författare)
- Banaras Hindu University
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: ACS Photonics. - 2330-4022. ; In Press
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A solution-processed inorganic-organic bilayer semiconductor channel-based red-light-sensitive thin-film transistor (TFT) has been fabricated by using an ion-conducting Li-Al2O3 gate dielectric that limits the operating voltage of this TFT within 2 V. In this device, a high-electron-mobility inorganic metal-oxide semiconductor (SnO2) was used as the primary charge transport layer, whereas the polymer (PIDT-2TPD) was used as the photoactive layer. To improve its red photosensitivity, an asymmetric work function source-drain (S-D) electrode was fabricated, which allows a selective carrier (electron or hole) injection and collection from the channel. Besides, the work function difference of this asymmetric S-D electrode generates a potential difference between electrodes that allows faster charge collection from the channel. As a consequence, the photosensitivity of this asymmetric S-D electrode TFT enhanced by ∼103 times under red illumination with respect to the symmetric S-D electrode TFT and the detectivity of this device increased ∼20 times. In addition, the on/off ratio of asymmetric TFT is 4 times greater than that of the symmetric TFT, whereas the subthreshold swing (SS) of this TFT is reduced from 200 to 144 mV/decade.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Nyckelord
- phototransistor
- ion-conducting dielectric
- asymmetric electrode
- organic/inorganic bilayer channel
- low operating voltage
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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