Langmuir-Blodgett assembly of nanometric WO3 thin film for electrochromic performance: A new way

被引:17
作者
Kondalkar, Vijay V. [1 ,2 ,3 ]
Yang, Sang Sik [3 ]
Patil, P. S. [4 ]
Choudhury, Sipra [2 ]
Bhosale, P. N. [1 ]
Lee, KeeKeun [3 ]
机构
[1] Shivaji Univ, Dept Chem, Mat Res Lab, Kolhapur, Maharashtra, India
[2] Bhabha Atom Res Ctr, Div Chem, Bombay, Maharashtra, India
[3] Ajou Univ, Dept Elect & Comp Engn, Suwon 441749, South Korea
[4] Shivaji Univ, Dept Phys, Kolhapur 416004, MS, India
关键词
Langmuir-Blodgett film; Electrochromic; Nanoparticles; Nanomatric WO3; OXIDE FILMS; FABRICATION; OXIDATION; ZNO;
D O I
10.1016/j.matlet.2017.02.030
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In the present investigation, a nanometric Tungsten oxide (WO3) thin film has been fabricated via a Langmuir-Blodgett (LB) technique through the thermal decomposition of a multilayer film of octadecylamine (ODA)-tungsten complex. ODA forms a stable complex with tungstate ion at the air-water interface and ODA-tungstate complex was subsequently deposited on ITO substrate by LB technique. The synthesised WO3 film was characterized for optical, structural and electrochromic properties. The film shows a large optical modulation of 30% at lambda(630) nm at a potential of +/- 1.2 V, faster switching speed, the time of coloration (tc) is 3.18 s and time of bleaching (tb) is 2.93 s, and a high coloration efficiency of 73.12 cm(2) C-1. The high coloration efficiency is attributed to well organized nanomatric WO3 on the substrate without any seed layer. After all, colored and bleached state of film was presented on CIE 1931 Lab estimated at 2 degrees observer using D-65 illumination. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:102 / 106
页数:5
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