Tunable electrochromic photonic crystals

被引:86
作者
Kuai, SL [1 ]
Bader, G [1 ]
Ashrit, PV [1 ]
机构
[1] Univ Moncton, Dept Phys & Astron, Thin Films & Photon Res Grp GCMP, Moncton, NB E1A 3E9, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1063/1.1929079
中图分类号
O59 [应用物理学];
学科分类号
摘要
Photonic crystals based on the electrochromic phenomenon have been fabricated and proposed for band gap tuning. Electrochromic tungsten trioxide (WO3) inverse opals have been fabricated by polystyrene colloidal crystal templating. The WO3 matrix was obtained through a dip-infiltrating sol-gel process, with subsequent removal of the polymer microspheres by calcination. Scanning electron micrographs confirm the ordering of the hexagonal macroporous structure. The reflection spectra show two pronounced Bragg diffraction peaks. By inserting lithium into the crystals, the first reflection peak shifts gradually toward shorter wavelength for 36 nm, while the second reflection peak shifts toward longer wavelength for about 28 nm. This should be of great interest for photonic device applications. (c) 2005 American Institute of Physics.
引用
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页码:1 / 3
页数:3
相关论文
共 21 条
[1]  
ASHRIT PV, 1990, P SOC PHOTO-OPT INS, V1401, P119
[2]  
BADER G, 1995, P SOC PHOTO-OPT INS, V2531, P70, DOI 10.1117/12.217354
[3]   Liquid-crystal photonic-band-gap materials: The tunable electromagnetic vacuum [J].
Busch, K ;
John, S .
PHYSICAL REVIEW LETTERS, 1999, 83 (05) :967-970
[4]  
Cronin J.P., 1994, U.S. Patent, Patent No. 5277986
[5]   Photonic crystal composites with reversible high-frequency stop band shifts [J].
Foulger, SH ;
Jiang, P ;
Lattam, A ;
Smith, DW ;
Ballato, J ;
Dausch, DE ;
Grego, S ;
Stoner, BR .
ADVANCED MATERIALS, 2003, 15 (09) :685-689
[6]  
Granqvist C. G., 1995, HDB INORGANIC ELECTR
[7]   Photochemically tunable colloidal crystals [J].
Gu, ZZ ;
Fujishima, A ;
Sato, O .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (49) :12387-12388
[8]   Single-crystal colloidal multilayers of controlled thickness [J].
Jiang, P ;
Bertone, JF ;
Hwang, KS ;
Colvin, VL .
CHEMISTRY OF MATERIALS, 1999, 11 (08) :2132-2140
[9]  
Joannopoulos J. D., 2008, Molding the flow of light
[10]   Preparation of large-area 3D ordered macroporous titania films by silica colloidal crystal templating [J].
Kuai, S ;
Badilescu, S ;
Bader, G ;
Brüning, R ;
Hu, XF ;
Truong, VV .
ADVANCED MATERIALS, 2003, 15 (01) :73-+