Kou Yoshida

Dr. Kou Yoshida is a Research Fellow in the School of Physics and Astronomy at the University of St Andrews. His research focuses on organic electronics, photonics, and optoelectronic materials, with a particular emphasis on organic light-emitting diodes (OLEDs) and their applications in lighting, communication, and biomedical systems. He has contributed to advancements in OLED efficiency, stability, and high-speed data transmission via visible light communication (VLC). His work includes developing electrically driven organic lasers and improving the performance of top-emitting OLEDs through structural optimizations.

Key research areas include:

• Efficiency roll-off mitigation in phosphorescent OLEDs
• High-bandwidth OLEDs for gigabit VLC systems
• Flexible and durable OLED designs for environmental resilience
• Organic semiconductor lasers and distributed feedback laser technologies
• Fluorescence sensing systems for DNA and biomedical imaging

Dr. Yoshida's recent publications highlight innovations in RGB-single-chip OLEDs for wavelength-division multiplexing, hybrid electrode structures for uniform light emission, and Purcell effect studies in OLED efficiency. His interdisciplinary approach bridges materials science, photonics, and engineering to address challenges in next-generation optoelectronic devices.

Collaborations include projects with Prof. Ifor Samuel and others at the University of St Andrews, focusing on organic semiconductor materials and device fabrication. His research has practical implications for energy-efficient lighting, medical devices, and high-speed communication networks.