A High Contrast Hybrid Electrochromic Device Containing PEDOT, Heptyl Viologen, and Radical Provider TEMPO

被引:19
作者
Hu, Chih-Wei [1 ]
Lee, Kun-Mu [3 ]
Vittal, R. [2 ]
Yang, Dung-Jing [2 ]
Ho, Kuo-Chuan [1 ,2 ]
机构
[1] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 10617, Taiwan
[2] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan
[3] Ind Technol Res Inst, Photovolta Technol Ctr, Hsinchu 31040, Taiwan
关键词
absorption; electrochromic devices; optical saturable absorption; reduction (chemical); visible spectra; FILMS; ELECTROCHEMISTRY; POLYMER; GAP;
D O I
10.1149/1.3428711
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
An anodic radical provider, 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO), and two electrochromic (EC) materials, poly(3,4-ethylenedioxythiophene) (PEDOT) and heptyl viologen [HV(BF4)(2)], were utilized to fabricate a hybrid electrochromic device (ECD). PEDOT and HV(BF4)(2) were used as film and solution-type cathodic EC materials, respectively. The ECD exhibited two-stage redox reactions with high absorbance attenuation in the visible region. With the variation in the operating voltage, a maximum transmittance change (Delta T) of 20% at 610 nm was observed in the first stage (-0.5 to 0.8 V), whereas a maximum Delta T of 68% was observed in the second stage (0.8-1.5 V). Furthermore, fast switching times of 6.9 and 2.1 s were estimated for bleaching and darkening, respectively. The coloration efficiencies at 610 nm were 171.9 and 91.0 cm(2) C-1 for the first and second stages, respectively. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3428711] All rights reserved.
引用
收藏
页码:P75 / P78
页数:4
相关论文
共 31 条
[1]   The donor-acceptor approach allows a black-to-transmissive switching polymeric electrochrome [J].
Beaujuge, P. M. ;
Ellinger, S. ;
Reynolds, J. R. .
NATURE MATERIALS, 2008, 7 (10) :795-799
[2]   Electrochromic Contrast Enhancement of Nanostructured Poly(3,4-ethylenedioxythiophene)-Polystyrene Sulfonate Films by Composition/Morphology Control [J].
Bhandari, Shweta ;
Deepa, M. ;
Srivastava, A. K. ;
Lakshmikumar, S. T. ;
RamaKant .
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2009, 9 (05) :3052-3061
[3]   Poly(3,4-ethylenedioxythiophene) (PEDOT)-Coated MWCNTs Tethered to Conducting Substrates: Facile Electrochemistry and Enhanced Coloring Efficiency [J].
Bhandari, Shweta ;
Deepa, Melepurath ;
Srivastava, Avaneesh Kumar ;
Lal, Chhotey ;
Kant, Rama .
MACROMOLECULAR RAPID COMMUNICATIONS, 2008, 29 (24) :1959-1964
[4]   Co-Fe-B-Si-Nb bulk glassy alloys with superhigh strength and extremely low magnetostriction [J].
Chang, CT ;
Shen, BL ;
Inoue, A .
APPLIED PHYSICS LETTERS, 2006, 88 (01)
[5]   Electrochemical synthesis of poly(3,4-ethylenedioxythiophene) nanotubes towards fast window-type electrochromic devices [J].
Cho, Seung Il ;
Xiao, Rui ;
Lee, Sang Bok .
NANOTECHNOLOGY, 2007, 18 (40)
[6]  
FENG W, 2007, J PHYS CONDENS MATT, V19, P8
[7]   Electrochromic tungsten oxide films: Review of progress 1993-1998 [J].
Granqvist, CG .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2000, 60 (03) :201-262
[8]  
Granqvist CG, 1995, Handbook of inorganic electrochromic materials, DOI DOI 10.1016/B978-044489930-9/50014-3
[9]   Electrochemistry of poly(3,4-alkylenedioxythiophene) derivatives [J].
Groenendaal, L ;
Zotti, G ;
Aubert, PH ;
Waybright, SM ;
Reynolds, JR .
ADVANCED MATERIALS, 2003, 15 (11) :855-879
[10]   A fast switching, low band gap, p- and n-dopable, donor-acceptor type polymer [J].
Gunbas, Gorkem E. ;
Camurlu, Pinar ;
Akhmedov, Idris Mecidoglu ;
Tanyeli, Cihangir ;
Onal, Ahmet M. ;
Toppare, Levent .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2008, 615 (01) :75-83