KES5-1173
Controlling Electrochemical States in Emerging Electrochromic Architectures
When and Where
Sep 30, 2026
10:45 - 11:10
Presenter(s)
Eunkyoung Kim (Yonsei University)
Co-Author(s)
Abstract
Electrochromic systems have evolved from simple color-switching materials into multifunctional electrochemical architectures through increasingly precise control of electrochemical states. Because their optical response directly reflects redox-state evolution, electrochromic materials provide a unique platform for investigating coupled electron and ion transport. However, spontaneous charge relaxation, electrochemical imbalance, and inefficient ion–electron coupling continue to limit optical memory, switching efficiency, and multifunctionality. Here, we present an electrochemical state control that has guided the development of advanced electrochromic systems. Suppressing interfacial charge relaxation preserves electrochemically stored states, enabling long-lived optical memory. Capacitive charge balancing stabilizes reversible redox transitions and improves switching efficiency, energy storage, and cycling durability. Extending these concepts through mixed ionic–electronic conductors enables efficient ion/electron transport and redox-state regulation, allowing synchronized electrochromic modulation and electrochemiluminescent emission within a monolithic device under a single DC bias. We further extend these principles to a transistor platform, where spatiotemporal control of electrochemical-state evolution enables direct visualization of redox processes and opens new opportunities for multifunctional electrochemical interfaces.
