Publication date: 21st July 2025
Organic mixed ionic–electronic conductors (OMIECs) enable efficient coupling between ionic and electronic signals, making them essential in bioelectronics and neuromorphic systems. Conventional organic electrochemical transistors (OECTs) exhibit inherent rectification, but their three-terminal architecture complicates their direct use as diodes. In this work, we introduce an intrinsic two-terminal organic electrochemical diode (OECD) that preserves the rectifying characteristics of OECTs while eliminating the gate electrode. The device consists of a P3HT channel bridging an anode and a cathode, where the anode is isolated from the electrolyte by a dielectric layer and the cathode remains exposed. This design suppresses leakage currents and enables controlled ion exchange, resulting in clear diode-like I–V behavior. The cathode simultaneously functions as both electronic source and ionic gate, governing doping and dedoping of the channel. Our results establish the fundamental mechanism of rectification in OECDs and provide a scalable, energy-efficient platform for compact organic electrochemical components with applications in bioelectronic interfaces and neuromorphic computing.
Authors thank the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan for financial support under the project grant No. AP19576727.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.