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Journal Article
Effects of Pre-reducing Sb-Doped SnO2 Electrodes in Viologen-Anchored TiO2 Nanostructure-Based Electrochromic Devices
- Authors
- Seong Mok Cho, Chil Seong Ah, Tae-Youb Kim, Juhee Song, Hojun Ryu, Sang Hoon Cheon, Joo Yeon Kim, Yong Hae Kim, Chi-Sun Hwang
- Issue Date
- 2016-06
- Citation
- ETRI Journal, v.38, no.3, pp.469-478
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- In this paper, we investigate the effects of pre-reducing Sb-doped SnO2 (ATO) electrodes in viologen-anchored TiO2 (VTO) nanostructure-based electrochromic devices. We find that by pre-reducing an ATO electrode, the operating voltage of a VTO nanostructure-based electrochromic device can be lowered; consequently, such a device can be operated more stably with less hysteresis. Further, we find that a pre-reduction of the ATO electrode does not affect the coloration efficiency of such a device. The aforementioned effects of a pre-reduction are attributed to the fact that a pre-reduced ATO electrode is more compatible with a VTO nanostructure-based electrochromic device than a non-pre-reduced ATO electrode, because of the initial oxidized state of the other electrode of the device, that is, a VTO nanostructure-based electrode. The oxidation state of a pre-reduced ATO electrode plays a very important role in the operation of a VTO nanostructure-based electrochromic device because it strongly influences charge movement during electrochromic switching.
- KSP Keywords
- Charge movement, Electrochromic switching, Operating Voltage, Oxidized state, Pre-reduction, Sb-doped, coloration efficiency, electrochromic devices, oxidation state