Optical, structural and electrochromic properties of nickel oxide films produced by sol-gel technique

被引：38

作者：

Purushothaman, K. K. ^{[2
]}

Antony, S. Joseph ^{[1
]}

Muralidharan, G. ^{[1
]}

机构：

[1] Gandhigram Rural Inst Deemed Univ, Dept Phys, Gandhigram 624302, India

[2] TRP Engn Coll, Dept Phys, SRM Grp, Irungalur 621105, Trichy, India

来源：

SOLAR ENERGY | 2011年 / 85卷 / 05期

关键词：

Thin films; Sol-gel; Electrochromics; NiO; NIOX THIN-FILMS; DEPOSITION; TRANSPARENT; BEHAVIOR;

D O I：

10.1016/j.solener.2011.02.012

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Nickel oxide films have been deposited from nickel acetate precursor using a sol gel dip coating method, onto glass and conducting fluorine doped tin oxide (FTO) glass substrate. The direct energy gap (E-gd) values for the 2-10 layered films are in the range of 3.62 eV-3.72 eV. X-ray diffraction (XRD) analysis reveals that films consisting of 2-6 layers are amorphous, while films consisting of 8-10 layers are poly-crystalline with cubic grains of around 12 nm-20 nm and preferential growth along the (1 1 1) and (2 0 0) planes. Fourier Transform Infrared (FTIR) spectrum confirms the formation of Ni-O. Electrochromic properties of the nickel oxide coatings were studied using cyclic voltammetric (CV) technique. The 8 layered NiO films exhibit the anodic/cathodic diffusion coefficient of 16.7/5.73 x 10(-13) cm(2)/s and the change in optical transmission is Delta T-630nm = 53% with a photopic contrast ratio of 2.87. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：978 / 984

页数：7

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