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Organic Optocoupler with Simple Construction as an Effective Linear Current Transceiver.

Jaroslaw Jung1, Arkadiusz Selerowicz1, Jacek Ulanski1

  • 1Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, 116 Zeromskiego Str., 90-924 Lodz, Poland.

Materials (Basel, Switzerland)
|January 11, 2025
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Summary
This summary is machine-generated.

This study demonstrates an efficient organic optocoupler (OPC) using simple, solution-processable semiconductors. The device achieves good performance with a simplified fabrication process, reducing manufacturing complexity.

Keywords:
DC and AC propertiesorganic optocouplershort circuited organic photodetector

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Area of Science:

  • Organic electronics
  • Optoelectronics
  • Semiconductor devices

Background:

  • Organic optocouplers (OPCs) are crucial for signal isolation in electronic systems.
  • Existing organic OPCs often involve complex structures and fabrication processes.
  • There is a need for simplified, efficient organic OPC designs.

Purpose of the Study:

  • To fabricate an efficient organic optocoupler (OPC) using commercially available, solution-processable organic semiconductors.
  • To simplify the device structure and fabrication process compared to existing organic OPCs.

Main Methods:

  • Fabrication of a single-active-layer organic light-emitting diode (OLED) transmitter using Super Yellow.
  • Fabrication of a single-active-layer organic light-emitting diode (OLSD) receiver using PTB7-Th:ITIC blend.
  • Integration of OLED and OLSD with a simple structure (glass/ITO/PEDOT:PSS/(active layer)/Ca/Al) without interlayers.

Main Results:

  • The fabricated OPC demonstrated a current transfer ratio of 0.13%.
  • The device exhibited good linearity and dynamic performance with a 170 kHz cutoff frequency and 2 μs response time.
  • The simplified structure significantly reduces fabrication steps and complexity.

Conclusions:

  • An efficient and simply fabricated organic optocoupler (OPC) is achievable using solution-processable organic semiconductors.
  • The simplified design offers comparable or better performance than complex organic OPCs.
  • This work paves the way for easier manufacturing of organic optoelectronic devices.