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Conference Paper Ultrafast Electrochromic Devices Using Nanostructured Electrodes
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Authors
Hojun Ryu, Seong M. Cho, Chil Seong Ah, Tae-Youb Kim, Ju Hee Song, Yong-Hae Kim
Issue Date
2015-07
Citation
Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices (AWAD) 2015, pp.1-2
Language
English
Type
Conference Paper
Project Code
15MB1600, The core technology development of light and space adaptable energy-saving I/O (Input/Output) platform for future advertising service, Hwang Chi-Sun
Abstract
We fabricated ultrafast switching electrochromic devices using vilogen for electrochromic materials. For cathode electrode we 7 nm TiO2 nano-particles with viologen anchored by phosphates. The other electrode for anodic reaction we used antimony doped tin oxide nano-particle of 10 nm size. The transmittance of the devices show under the 12% transmittance for darkened state measured with 550 nm beam. The band of transmittance change is obtained almost 70% and the transition time from initial to darkened state is 45 msec while the bleaching time which is measured at 90% bleached is 85 msec. After 10,000 cycles transition test the transparency of devices and the transition time do not deteriorated because of the very stable nano structure. So the fabricated devices have very good potential for fast switching optical shutter for transparent display or interior/exterior room mirror for cars relieving the glaring by the other cars.
KSP Keywords
Antimony doped tin oxide(ATO), Cathode electrode, Electrochromic device(ECD), Nanostructured electrodes, Optical shutter, TiO2 nanoparticles, Transparent display, anodic reaction, electrochromic materials, transition time, ultrafast switching