Flexible electrochromic films based on CVD-graphene electrodes

被引：39

作者：

Choi, Dong Soo ^{[1
,2
]}

Han, Seung Ho ^{[2
]}

Kim, Hyeongkeun ^{[2
]}

Kang, So Hee ^{[1
,2
]}

Kim, Yena ^{[1
,2
]}

Yang, Cheol-Min ^{[3
]}

Kim, Tae Young ^{[4
]}

Yoon, Dae Ho ^{[1
,5
]}

Yang, Woo Seok ^{[2
]}

机构：

[1] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea

[2] Korea Elect Technol Inst, Elect Mat & Device Res Ctr, Songnam 463816, South Korea

[3] Korea Inst Sci & Technol, Inst Adv Composite Mat, Jeollabuk Do 565905, South Korea

[4] Gachon Univ, Dept Bionanotechnol, Songnam 461701, South Korea

[5] Sungkyunkwan Univ, SKKU Adv Inst Nanotechnol SAINT, Suwon 440746, South Korea

来源：

NANOTECHNOLOGY | 2014年 / 25卷 / 39期

基金：

新加坡国家研究基金会;

关键词：

CVD; graphene; electrochromic; flexible devices; WOx; NiO; RAMAN; TRANSPARENT; LAYER;

D O I：

10.1088/0957-4484/25/39/395702

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Graphene synthesized via chemical vapor deposition is a notable candidate for flexible large-area transparent electrodes due to its great physical properties and its 2D activated surface area. Electrochromic devices in optical displays, smart windows, etc are suitable applications for graphene when used as a transparent conductive electrode. In this study, various-layer graphene was synthesized via chemical vapor deposition, and inorganic WOx was deposited on the layers, which have advantageous columnar structures and W6+ and W4+ oxidation states. The characteristics of graphene and WOx were verified using optical transmittance, Raman spectroscopy, x-ray photoelectron spectroscopy and scanning electron microscopy. The optimum transparent conductive electrode condition for controlling graphene layers was investigated based on the optical density and cyclic voltammetry. Electrochromic devices were fabricated using a three-layer graphene electrode, which had the best optical density. The graphene in the flexible electrochromic device demonstrated a potential for replacing ITO in flexible electronics.

引用

页数：7

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