Compensative Electrochromic Device Utilizing Electro-deposited Plasmonic Silver Nanoparticles and Manganese Oxide to Achieve Retention of Chromatic Color (Supporting Information)

Silver deposition-based electrochromic (EC) device enabled various optical states by using either the electrodeposition of silver thin films or silver nanoparticles on an indium tin oxide electrode. These optical states, including chromatic colors such as cyan, magenta, yellow, and green, are based on absorption by the localized surface plasmon resonance of silver nanoparticles. However, an ideal counter-reaction material that does not affect the color representation by silver nanoparticles and does not dissolve the deposited silver has not been reported. To achieve both color retention and chromatic color representation, MnO2 was utilized as the counter electrode material. The EC properties of the novel device with the MnO2 counter electrode were investigated in terms of charge density and its ability to change color. The novel EC device achieved both representations of chromatic color and retained its color without power supply.

基于银沉积的电致变色（EC）器件，通过在氧化铟锡电极上采用银薄膜或银纳米粒子的电沉积，实现了多种光学状态。这些光学状态，包括青色、品红色、黄色和绿色等彩色，均基于银纳米粒子的局域表面等离子体共振吸收。然而，一种理想的反作用材料尚未被报道，该材料既不影响银纳米粒子的颜色表征，又不会溶解沉积的银。为了实现颜色的保持和彩色表征，采用了二氧化锰（MnO2）作为对电极材料。针对具有MnO2对电极的新型电致变色器件，对其电致特性进行了研究，包括电荷密度及其改变颜色的能力。该新型电致变色器件在无需电源的情况下，实现了彩色表征和颜色保持的双重效果。