Open AccessEffects of Pre‐reducing Sb‐Doped SnO 2 Electrodes in Viologen‐Anchored TiO 2 Nanostructure‐Based Electrochromic Devices
Author(s) -
Cho Seong Mok,
Ah Chil Seong,
Kim TaeYoub,
Song Juhee,
Ryu Hojun,
Cheon Sang Hoon,
Kim Joo Yeon,
Kim Yong Hae,
Hwang ChiSun
Publication year - 2016
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.16.0115.0286
Subject(s) - electrochromism , electrode , nanostructure , materials science , viologen , electrochromic devices , optoelectronics , doping , nanotechnology , chemistry , photochemistry
In this paper, we investigate the effects of pre‐reducing Sb‐doped SnO 2 (ATO) electrodes in viologen‐anchored TiO 2 (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.