Effect of temperature of annealing on optical, structural and electrochromic properties of sol-gel dip coated molybdenum oxide films

被引：75

作者：

Dhanasankar, M. ^{[2
]}

Purushothaman, K. K. ^{[3
]}

Muralidharan, G. ^{[1
]}

机构：

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

[2] Kamaraj Coll Engn & Technol, Dept Phys, Virudunagar 626001, India

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

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 06期

关键词：

Electrochromism; MoO3; Thin films; Sol-gel dip coating; MOO3; THIN-FILMS; NANORODS; SUBSTRATE; BEHAVIOR;

D O I：

10.1016/j.apsusc.2010.09.052

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The sol-gel dip-coating method is used for the preparation of MoO3 thin films. The 6 layered MoO3 films were prepared and annealed at various temperatures in the range of 200-350 degrees C. The band gap value for MoO3 films were calculated from optical absorption measurements and it is in the range of 3.55-3.73 eV. XRD spectrum reveals (0 2 0) is the major diffraction plane for the films prepared above 250 degrees C, which reveals the formation of MoO3 in alpha-orthorhombic phase. The films prepared at 200 degrees C and 250 degrees C exhibits amorphous nature. The FTIR spectrum confirms the presence of Mo-O-Mo and Mo=O bonds. Nanorods were observed in the SEM images in the case of MoO3 films prepared above 250 degrees C. The films prepared at 250 degrees C exhibit maximum anodic diffusion coefficient of 9.61x10(-11) cm(2)/s. The same film exhibits the change in optical transmission of 58.4% at 630nm with the optical density of 0.80. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2074 / 2079

页数：6

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