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- Publish Date：2026-08-25
NYCU and Japanese Partners Launch Five-University CP-OLED Initiative with Joint Symposium
Schematic overview of the Japan–Taiwan joint research project on next-generation circularly polarized organic light-emitting diodes (CP-OLEDs). The project combines Japanese expertise in optical spectroscopy and device physics with Taiwanese expertise in chiral materials and semiconductor technology to develop new CP-OLED designs.
By Kindai University
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A five-university Japan-Taiwan research consortium - led by Principal Researchers Yoshitane Imai (Professor, Kindai University) and Ming-Chia Li (Associate Professor, National Yang Ming Chiao Tung University) - has been selected for the 2026 Japan-Taiwan Exchange Association Joint Research Grant Program in Natural and Applied Sciences. The participating institutions include Kindai University, Ibaraki University, Osaka Metropolitan University, National Yang Ming Chiao Tung University (NYCU), and National Central University (NCU).
Through this international collaboration, Japanese and Taiwanese researchers are developing core technologies for Circularly Polarized Organic Light-Emitting Diodes (CP-OLEDs), a type of next-generation semiconductor optical device that natively emits circularly polarized light.
To launch the project, the "2026 Taiwan–Japan Joint Symposium on Next-Generation Circularly Polarized Luminescence Technology" will be held on September 1–2, 2026, at NYCU and NCU in Taiwan. A delegation of researchers and students from Kindai University, Ibaraki University, and Osaka Metropolitan University will travel to Taiwan to present their latest scientific findings. The two-day program features dedicated sessions for early-career researchers, laboratory tours, and strategic planning meetings to align research objectives for the upcoming three-year initiative.
Through this international collaboration, Japanese and Taiwanese researchers are developing core technologies for Circularly Polarized Organic Light-Emitting Diodes (CP-OLEDs), a type of next-generation semiconductor optical device that natively emits circularly polarized light.
To launch the project, the "2026 Taiwan–Japan Joint Symposium on Next-Generation Circularly Polarized Luminescence Technology" will be held on September 1–2, 2026, at NYCU and NCU in Taiwan. A delegation of researchers and students from Kindai University, Ibaraki University, and Osaka Metropolitan University will travel to Taiwan to present their latest scientific findings. The two-day program features dedicated sessions for early-career researchers, laboratory tours, and strategic planning meetings to align research objectives for the upcoming three-year initiative.
Building the Foundations for Next-Generation CP-OLEDs
Circularly polarized light (CPL) is light that propagates with an electric field vector rotating either clockwise or counter-clockwise. By introducing a new dimension of information—the direction of rotation—alongside intensity and color, CPL holds immense potential for next-generation displays, optical communications, information security, 3D imaging, and biosensing. Among these innovations, CP-OLEDs are attracting significant attention as advanced light-emitting devices that directly convert electrical energy into CPL.
However, commercial implementation still faces critical bottlenecks, including the need to simultaneously achieve high luminous efficiency and polarization density, expand available materials, and increase device design flexibility.
Supported by the Japan-Taiwan Exchange Association’s joint research grant program, a bilateral research team is advancing the development of foundational technologies for next-generation circularly polarized semiconductor optical devices. This research is co-led by Professors Yoshitane Imai (Kindai University), Professor Hiroyuki Nishikawa (Ibaraki University), and Professor Shigeyuki Yagi (Osaka Metropolitan University), Associate Professor Ming-Chia Li (NYCU) and Assistant Professor Hsiao-Fang Wang (NCU). Through collaborative research, academic symposia, and dedicated early-career researcher exchanges, the project aims to accelerate breakthroughs in circularly polarized light emission technology while cementing a robust, long-term scientific network between Japan and Taiwan.
To achieve these goals, the project integrates the Japanese research team's extensive expertise in circularly polarized light spectroscopy, luminescence evaluation under magnetic fields, and the fabrication and evaluation of organic EL devices with the Taiwanese research group's leading capabilities in circularly polarized luminescent materials, polymer and semiconductor chemistry, self-assembly, and advanced material structural analysis. By combining these cutting-edge technologies, the collaborative initiative aims to induce asymmetry in the electronic states and electron spins of luminescent materials using external magnetic or electric fields, thereby enabling highly efficient, high-performance circularly polarized luminescent materials and novel device principles spanning a broad wavelength range from the visible to the near-infrared.
Specifically, the project focuses on magnetic-field-induced circularly polarized luminescence (MCPL) to induce light emission via magnetic fields, electric-field-induced circularly polarized luminescence (ECPL) to control emission via electric fields, and the chiral-induced spin selectivity (CISS) effect to select electron spins passing through chiral molecular structures. By integrating these foundational principles, the team aims to develop novel CP-OLEDs that transcend the limitations of conventional chiral luminescent molecules.
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