We proposed a new optoelectronic solid-sate thin-film architecture for active structural color and experimentally demonstrated this proof-of-concept recipe composed of amorphous iron oxides and high-mobility silver layers. Scanning transmission electron microscope (STEM) reveals that multiple iron oxide-silver laminates with various thicknesses have been driven by the bias electrical field to float at various heights with tunable layer sequences, which is responsible for the multiple robust, non-volatile, and reversible high-resolution structural color. Our work breaks the limitations of the current approaches relying on static structures of solid-sate devices and opens an unexplored way for constructing active modern devices for optics, optoelectronics, and semiconductors, etc.
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