Low-energy-consumption electrically-addressable high-speed full-color gamut dynamic photonic crystal display

Photonic crystal (PhC) displays have garnered significant attention owing to their high color saturation, brightness, wide color gamut, and low energy consumption. However, existing PhC color modulation techniques still suffer from drawbacks such as slow response speed, short cycle life, poor control accuracy, and challenging pixel integration, which severely restrict their application in dynamic displays. Herein, we integrate a two-dimensional PhC film with an electroactive ionic polymer-metal composite (IPMC) actuator featuring titanium carbide/carbon nanotubes (MXene/CNTs) composite electrodes and achieve a dynamic PhC display with full-color-gamut switching. Color change of the prepared PhC display is electrically controlled, localized, and active, enabling precise pixel control. MXene/CNT-IPMC offers electrically addressable, high-speed pixelation which enables rapid color switching for dynamic displays. This synergistic integration of PhC films with actuation devices not only demonstrates their potential for display applications but also lays the foundation for dynamic reflective displays with low energy consumption, high brightness, and wide color gamut.