Novel coral-like hexagonal MoO3 thin films: Synthesis and photochromic properties

被引：22

作者：

Shen, Yi ^{[1
]}

Yang, Yali ^{[1
]}

Hu, Fengping ^{[1
]}

Xiao, Yilin ^{[1
]}

Yan, Peng ^{[1
]}

Li, Zhen ^{[1
]}

机构：

[1] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2015年 / 29卷

基金：

中国国家自然科学基金;

关键词：

MoO3 thin films; Coral-like hierarchical structure; Photochromism; OXIDE-FILMS; GROWTH; POWDER;

D O I：

10.1016/j.mssp.2014.03.055

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

MoO3 thin films were obtained by varying the precursor concentration (c) using a hydrothermal method. X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), ultraviolet-visible diffuse reflectance spectroscopy and a color difference meter were employed for the characterization of synthesized thin films. With the increase of precursor concentration, the morphology of MoO3 thin films changed from hexagonal prismatic structures to coral like structures and finally straw like structures. XRD results showed that all samples can be indexed to the hexagonal structure of MoO3. Additionally, the band gap of all MoO3 thin films was around 3.16 eV calculated from UV-vis diffuse reflectance spectrum. The as prepared MoO3 film with coral like structures possessed the maximum color difference value (triangle C=2.33). This result indicates that MoO3 film prepared with the precursor concentration of 0.18 M exhibits excellent photochromic properties due to the large exposed surface provided by coral like hierarchical structure. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：250 / 255

页数：6

共 26 条

[1] Preparation through the vapor transport and growth mechanism of the first-order hierarchical structures of MoO3 belts on sillimanite fibers [J].

Badica, Petre .

CRYSTAL GROWTH & DESIGN, 2007, 7 (04) :794-801

[2]

Catherine S., 2001, J MATER CHEM, V11, P815

[3] PHOTOCHROMISM AND ELECTROCHROMISM IN AMORPHOUS TRANSITION-METAL OXIDE-FILMS [J].

COLTON, RJ ;

GUZMAN, AM ;

RABALAIS, JW .

ACCOUNTS OF CHEMICAL RESEARCH, 1978, 11 (04) :170-176

[4] Photoelectrochromic window with Pt catalyst [J].

Georg, A ;

Krasovec, UO .

THIN SOLID FILMS, 2006, 502 (1-2) :246-251

[5] Lattice widening in niobium-doped TiO2 nanotubes:: Efficient ion intercalation and swift electrochromic contrast [J].

Ghicov, Andrei ;

Yamamoto, Masahiro ;

Schmuki, Patrik .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (41) :7934-7937

[6] Improved photochromism of WO3 thin films by addition of Au nanoparticles [J].

He, T ;

Ma, Y ;

Cao, YA ;

Yang, WS ;

Yao, JN .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2002, 4 (09) :1637-1639

[7] Photochromism in composite and hybrid materials based on transition-metal oxides and polyoxometalates [J].

He, Tao ;

Yao, Jiannian .

PROGRESS IN MATERIALS SCIENCE, 2006, 51 (06) :810-879

[8] Shape control of semiconductor and metal oxide nanocrystals through nonhydrolytic colloidal routes [J].

Jun, Young-wook ;

Choi, Jin-sil ;

Cheon, Jinwoo .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (21) :3414-3439

[9] Polymer-assisted growth of molybdenum oxide whiskers via a sonochemical process [J].

Krishnan, Chirakkal V. ;

Chen, Jinglu ;

Burger, Christian ;

Chu, Benjamin .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (41) :20182-20188

[10] SCHERRER AFTER 60 YEARS - SURVEY AND SOME NEW RESULTS IN DETERMINATION OF CRYSTALLITE SIZE [J].

LANGFORD, JI ;

WILSON, AJC .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1978, 11 (APR) :102-113

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