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Synthesis, Preparation, and Characterization of High-Performance Electrochromic and Conductive Materials for Optoelectronic Devices
Triarylamine,Electrochromic,Transmissive-to-black,Silver nanowires,Stretchable electrode,
|Publication Year :||2016|
This study has been separated into four chapters. Chapter 1 is the general introduction. Chapter 2 includes the synthesis of electrochromic materials (ECMs) and fabrication of high contrast electrochromic devices (ECDs). Chapter 3 describes the preparation of stretchable electrodes based on silver nanowires (AgNWs) and polydimethylsiloxane (PDMS) hybrid for elastomeric ECDs. Chapter 4 is conclusions.
The fabrication, basic characterization, electrochromic properties of a novel ECD was investigated and improved. The ECD combined three different kinds of ECMs, TPPA-PA, TPB-PA and HV. By introducing HV as an efficient charge trapping layer, the working voltage could be greatly reduced and the performance of overall system was also enhanced. The ECD of Blending-A system exhibits ultra-high contrast from bleaching state with transmittance in visible region up to 85% to coloring state with transmittance only 6% both in visible and NIR regions. High ΔL* (88.2) and ΔT (79.0% at visible light region) could be achieved by the colorless ECD. Thus, it could claim to be a truly “transmissive-to-black” ECD, implying high potential of application as shutter for transparent displays and energy saving devices.
In another part, an effective method to transfer AgNWs into PDMS by sacrificial substrates which has hydrophobic surface, and successfully prepare stretchable AgNWs/PDMS hybrid electrodes having high transparency and low sheet resistance at the same time. The prepared electrodes could be stretched, twisted, and bended without significant loss of conductivity. Furthermore, a novel elastomeric HV ECD was fabricated based on these stretchable AgNWs/PDMS hybrid electrodes. This elastomeric HV ECD could exhibit excellent electrochromic behavior and transform the color between colorless and blue even after 100 switching cycle. It was the first ECD based on full AgNWs system.
|Appears in Collections:||高分子科學與工程學研究所|
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