Control of Powder Microstructure for Improved Infrared Reflectance Modulation of an Electrochromic Plastic Device
Citations Over TimeTop 16% of 2003 papers
Abstract
The so-called plastic technology first developed for Li-ion batteries is demonstrated for its potential optical applications in infrared emissivity control. WO3·H2O powder embedded in a plastic matrix is used as the active component in the LiCoO2/Li electrolyte/WO3·H2O system. The role of the microstructure of WO3·H2O as an electrochromic material is investigated. For instance, platelet-shaped grains with a surface area as large as 15 μm2 induce a large improvement in device contrast properties. Reflectance measurements show a 53% contrast between the bleached and colored states over the 8−12 μm range. This effect is likely rooted in the free electron mobility in addition to scattering and phonon effects. The optical modulation performance over the range 2.5−20 μm compares favorably with literature results on solid devices built from annealed and sputtered m-WO3 thin films.
Related Papers
- → A simplified all-polymer flexible electrochromic device(2004)157 cited
- → Electrochromic properties as a function of electrolyte on the performance of electrochromic devices consisting of a single-layer polymer(2014)49 cited
- → Complementary all Solid State Electrochromic Devices Using Carboxymethyl Cellulose Based Electrolytes(2014)19 cited
- → Electroactive Polymers with Semi-IPN Architectures for Electrochromic Devices(2010)10 cited
- Study on Preparation and Characteristics of Electrochromic Transmittance Device Based on Tungsten Oxide Films(2001)