Optoelectronic conversion and polarization hysteresis in organic MISM and MISIM devices with DA-type single-component molecules

Organic electronic devices offer various advantages, such as low cost and tunability. However, the organic semiconductors used in these devices have significant drawbacks, including instability in air and low carrier mobility. To address these challenges, we recently introduced organic MISM and MISI...

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Bibliographic Details
Published in:Faraday discussions 2024-03, Vol.25, p.96-19
Main Authors: Tomimatsu, Akihiro, Suizu, Rie, Nakazawa, Miyabi, Shirahata, Takashi, Misaki, Yohji, Kinoshita, Naoya, Awaga, Kunio
Format: Article
Language:English
Subjects:
Bilayers
Carrier mobility
Ferroelectricity
Hysteresis
Optoelectronic devices
Organic semiconductors
Photoelectric effect
Photoelectricity
Polarization
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Summary:Organic electronic devices offer various advantages, such as low cost and tunability. However, the organic semiconductors used in these devices have significant drawbacks, including instability in air and low carrier mobility. To address these challenges, we recently introduced organic MISM and MISIM (M = metal, I = insulator, S = semiconductor) devices, which effectively generate photo-induced displacement current and exhibit ferroelectric behavior. In previous studies, the S layer consisted of an organic donor-acceptor (DA) bilayer. In the present research, we fabricated MISM and MISIM devices using DA-type single-component molecules as the S layer and examined their photocurrent and polarization hysteresis. While the performance of these devices does not surpass that of DA bilayer devices, we discovered that DA-type single-component molecules can be utilized for photoelectric conversion and polarization trapping. We fabricated MISM and MISIM devices using DA-type single-component molecules as the S layer and examined their photocurrent and polarization hysteresis.
ISSN:1359-6640
1364-5498
DOI:10.1039/d3fd00125c