New Fields for Organic Semiconductors
James Ryan a
a Department of Chemistry, Swansea University, Singleton Park, Swansea SA2 8PP, UK
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP23)
Kobe, Japan, 2023 January 22nd - 24th
Organizers: Seigo Ito, Hideo Ohkita and Atsushi Wakamiya
Keynote, James Ryan, presentation 045
Publication date: 21st November 2022

Organic semiconductors have found application in a number of optoelectronic technologies, most notably light emitting diodes (LEDs) and photovoltaics (PV). While organic LEDs (OLEDs) have been in the market for quite some time, organic PV (OPV) is still in its infancy. It is expected that OPV will however find application in a number of emergent applications such as indoor lighting for IoT, aerospace and in agricultural settings (agriPV) due to a number of material and electronic properties (lightweight low-cost materials, high-throughput processing, tuneable electronic properties).[1,2,3] AgriPV in particular is gaining a lot of attention recently thanks to the inherent light-weight and semi-transparent active areas found in OPV, advances in efficiencies and lifetimes, and the inherent ability to tune the bandgap of active layer materials to transmit photons in the photoactive region (PAR) of photosynthesis and absorb light outside of the PAR. [4,5] In this talk I will discuss our initial work in exploring the application of OPV in greenhouse, polytunnel and field applications as well as the challenges involved when scaling ST-OPV devices from the lab to prototype modules.


In addition to OLEDs and OPV, organic semiconductors have been used to fabricate a number of other electronic and optoelectronic devices including photodetectors, transistors, electrochemical transistors, and pseudocapacitors. [6] Organic semiconductors are also emerging as potential materials for neuromorphic computing  applications, and is an area that we have are exploring with great interest. [7] I will highlight our recent work in this area, including a study based on a small-molecule nanowire array that demonstrated multi-state memory, non-volatile memory retention and the ability to write a variety of conductance states. [8] There is great scope to further develop this area of research and I will provide a perspective on how this may be achieved.

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