Electrochromic Devices Based on Porous Tungsten Oxide Thin Films

被引:86
作者
Djaoued, Y. [1 ]
Balaji, S. [1 ]
Bruening, R. [2 ]
机构
[1] Univ Moncton, Lab Rech Mat & Microspect Raman & FTIR, Shippegan, NB E8S 1P6, Canada
[2] Mt Allison Univ, Dept Phys, Sackville, NB E4L 1E6, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
LITHIUM INTERCALATION; RAMAN-SPECTROSCOPY; WO3; FILMS; POWDERS; WINDOWS; PHASE;
D O I
10.1155/2012/674168
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Recent developments in the synthesis of transition metal oxides in the form of porous thin films have opened up opportunities in the construction of electrochromic devices with enhanced properties. In this paper, synthesis, characterization and electrochromic applications of porous WO3 thin films with different nanocrystalline phases, such as hexagonal, monoclinic, and orthorhombic, are presented. Asymmetric electrochromic devices have been constructed based on these porous WO3 thin films. XRD measurements of the intercalation/deintercalation of Li+ into/from the WO3 layer of the device as a function of applied coloration/bleaching voltages show systematic changes in the lattice parameters associated with structural phase transitions in LixWO3. Micro-Raman studies show systematic crystalline phase changes in the spectra of WO3 layers during Li+ ion intercalation and deintercalation, which agree with the XRD data. These devices exhibit interesting optical modulation (up to similar to 70%) due to intercalation/deintercalation of Li ions into/from the WO3 layer of the devices as a function of applied coloration/bleaching voltages. The obtained optical modulation of the electrochromic devices indicates that, they are suitable for applications in electrochromic smart windows.
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页数:9
相关论文
共 28 条
[1]   FROM LIGHT-SCATTERING TO THE MICROSTRUCTURE OF THIN-FILM MULTILAYERS [J].
AMRA, C .
APPLIED OPTICS, 1993, 32 (28) :5481-5491
[2]  
[Anonymous], 1996, POWD DIFFR FIL IN OR
[3]   Enhancement of photocatalytic and electrochromic properties of electrochemically fabricated mesoporous WO3 thin films [J].
Baeck, SH ;
Choi, KS ;
Jaramillo, TF ;
Stucky, GD ;
McFarland, EW .
ADVANCED MATERIALS, 2003, 15 (15) :1269-+
[4]   Porous orthorhombic tungsten oxide thin films: synthesis, characterization, and application in electrochromic and photochromic devices [J].
Balaji, Subramanian ;
Djaoued, Yahia ;
Albert, Andre-Sebastien ;
Bruening, Ralf ;
Beaudoin, Normand ;
Robichaud, Jacques .
JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (11) :3940-3948
[5]   Hexagonal Tungsten Oxide Based Electrochromic Devices: Spectroscopic Evidence for the Li Ion Occupancy of Four-Coordinated Square Windows [J].
Balaji, Subramanian ;
Djaoued, Yahia ;
Albert, Andre-Sebastien ;
Ferguson, Richard Z. ;
Bruening, Ralf .
CHEMISTRY OF MATERIALS, 2009, 21 (07) :1381-1389
[6]   Micro-Raman spectroscopic characterization of a tunable electrochromic device for application in smart windows [J].
Balaji, Subramanian ;
Albert, Andre-Sebastien ;
Djaoued, Yahia ;
Bruening, Ralf .
JOURNAL OF RAMAN SPECTROSCOPY, 2009, 40 (01) :92-100
[7]   Low-temperature polymorphism in tungsten trioxide powders and its dependence on mechanical treatments [J].
Cazzanelli, E ;
Vinegoni, C ;
Mariotto, G ;
Kuzmin, A ;
Purans, J .
JOURNAL OF SOLID STATE CHEMISTRY, 1999, 143 (01) :24-32
[8]   Synthesis and electrochromic properties of mesoporous tungsten oxide [J].
Cheng, W ;
Baudrin, E ;
Dunn, B ;
Zink, JI .
JOURNAL OF MATERIALS CHEMISTRY, 2001, 11 (01) :92-97
[9]   INFRARED AND RAMAN-STUDY OF WO3 TUNGSTEN TRIOXIDES AND WO3, XH2O TUNGSTEN TRIOXIDE HYDRATES [J].
DANIEL, MF ;
DESBAT, B ;
LASSEGUES, JC ;
GERAND, B ;
FIGLARZ, M .
JOURNAL OF SOLID STATE CHEMISTRY, 1987, 67 (02) :235-247
[10]   Opportunities and challenges in science and technology of WO3 for electrochromic and related applications [J].
Deb, Satyen K. .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2008, 92 (02) :245-258