Quantum dots CdS-modified WO3 film for multi-color electrochromism

Multicolored inorganic electrochromic materials: status, challenge, and prospects

“…Subsequently, researchers systematically studied the multicolored properties of WO 3 film modified with CdS QDs. 93 It was found that the initial film was yellow. When Cd 2+ was reduced to Cd + , CdS films slowly turned from yellow to black in the process of applying a negative voltage.…”

Recent Advance in Electrochromic Materials and Devices for Display Applications

“…When voltage is applied, ions in the reactive layer move towards to the other electrode, initiating an electrochemical reaction which changes the excited state and the color of the emitted light from quantum dots. Zhang et al [106] successfully prepared CdS quantum dot-modified WO 3 thin [103] Copyright 2023, American Chemical Society.…”

Performance Optimization for Multicolor Electrochromic Devices: Morphology and Composition Regulation of Inorganic Electrochromic Materials and Selectivity of Ions

“…Such as Zhang et al prepared the WO 3 EC film modified by CdS quantum dots for multicolor ECDs (as shown in Figure 4d), and it exhibited a higher coloration efficiency and a larger contrast than the single EC layer due to the higher ionic storage from CdS-modified WO 3 film. [68] It put forward a way to explore the EC performance of metal chalcogenide in this study. According to the subtractive color mixture theory, the EC layer prepared with WO 3 and Au/nylon 66 films exhibits a multicolor change (yellow, light green, and dark green) at different voltages due to the effect of blue (from WO 3 film) over yellow (from Au/nylon 66 substrate).…”

“…Reproduced with permission. [68] Copyright 2023, Elsevier Ltd. −1.0 V, green-yellow at 0.6 V, and orange-yellow at 1.5 V) due to the color mixing at different voltages. As shown in Figure 4c, it also promotes the reaction kinetics in ECD and enhances the cycling stability of the device via the synergistic effect between V 2 O 5 and WO 3 .…”