The influence of surface morphology of TiO2 coating on the performance of dye-sensitized solar cells

被引:83
作者
Lee, Kun-Mu
Suryanarayanan, Vembu
Ho, Kuo-Chuan [1 ]
机构
[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan
[2] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 10617, Taiwan
关键词
dye-sensitized solar cells; electrochemical impedance spectroscopy; multi-layer TiO2 electrode; nanocrystallined TiO2; NANOCRYSTALLINE TIO2; CONVERSION EFFICIENCY; ADSORPTION; TRANSPORT;
D O I
10.1016/j.solmat.2006.03.034
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The optimization of solar energy conversion efficiency of dye-sensitized solar cells (DSSCs) was investigated by the tuning of TiO2 photoelectrode's surface morphology. Double-layered TiO2 photoelectrodes with four different structures were designed by the coating of TiO2 suspension, incorporated with low and high molecular weight poly(ethylene glycol) as a binder. Among these four systems, P2P1, where P1 and P2 correspond to the molecular weight of 20,000 and 200,000, respectively, showed the highest efficiency under the conditions of identical film thickness and constant irradiation. This can be explained by the larger pore size and higher surface area of P2P1 TiO2 electrode than the other materials as revealed by scanning electron microscopic (SEM) and Brunauer-Emmett-Teller (BET) analyses. Electrochemical Impedance Spectroscopy (EIS) analysis shows that P2P1 formulation displayed a smaller resistance than the others at the TiO2/electrolyte interface. The best efficiency (eta) of 9.04% with the short-circuit photocurrent density (J(sc)) and open-circuit voltage (V-oc) of 18.9 mA/cm(2) and 0.74V, respectively, was obtained for a solar cell by introducing the light-scattering particles to the TiO2 nanoparticles matrix coated on FTO electrode having the sheet resistivity of 8 Omega/sq. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:2398 / 2404
页数:7
相关论文
共 14 条
[1]  
Barbe CJ, 1997, J AM CERAM SOC, V80, P3157, DOI 10.1111/j.1151-2916.1997.tb03245.x
[2]   The adsorption behavior of a rutheninm-based sensitizing dye to nanocrystalline TiO2 -: Coverage effects on the external and internal sensitization quantum yields [J].
Fillinger, A ;
Parkinson, BA .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (12) :4559-4564
[3]   Dye sensitization of natural anatase crystals with a ruthenium-based dye [J].
Fillinger, A ;
Soltz, D ;
Parkinson, BA .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (09) :A1146-A1156
[4]   Photoelectrochemical cells [J].
Grätzel, M .
NATURE, 2001, 414 (6861) :338-344
[5]   SELF-DIFFUSION AND CONDUCTANCE STUDIES OF ACETONITRILE - WATER SOLUTIONS OF TETRAETHYLAMMONIUM IODIDE [J].
HAWLICKA, E ;
GRABOWSKI, R ;
REIMSCHUSSEL, W .
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1990, 94 (02) :158-162
[6]   Applications of functionalized transition metal complexes in photonic and optoelectronic devices [J].
Kalyanasundaram, K ;
Grätzel, M .
COORDINATION CHEMISTRY REVIEWS, 1998, 177 :347-414
[7]   Engineering of efficient panchromatic sensitizers for nanocrystalline TiO2-based solar cells [J].
Nazeeruddin, MK ;
Péchy, P ;
Renouard, T ;
Zakeeruddin, SM ;
Humphry-Baker, R ;
Comte, P ;
Liska, P ;
Cevey, L ;
Costa, E ;
Shklover, V ;
Spiccia, L ;
Deacon, GB ;
Bignozzi, CA ;
Grätzel, M .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (08) :1613-1624
[8]   CONVERSION OF LIGHT TO ELECTRICITY BY CIS-X2BIS(2,2'-BIPYRIDYL-4,4'-DICARBOXYLATE)RUTHENIUM(II) CHARGE-TRANSFER SENSITIZERS (X = CL-, BR-, I-, CN-, AND SCN-) ON NANOCRYSTALLINE TIO2 ELECTRODES [J].
NAZEERUDDIN, MK ;
KAY, A ;
RODICIO, I ;
HUMPHRYBAKER, R ;
MULLER, E ;
LISKA, P ;
VLACHOPOULOS, N ;
GRATZEL, M .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (14) :6382-6390
[9]   Investigation of sensitizer adsorption and the influence of protons on current and voltage of a dye-sensitized nanocrystalline TiO2 solar cell [J].
Nazeeruddin, MK ;
Humphry-Baker, R ;
Liska, P ;
Grätzel, M .
JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (34) :8981-8987
[10]   Single- and double-layered mesoporous TiO2/P25 TiO2 electrode for dye-sensitized solar cell [J].
Ngamsinlapasathian, S ;
Sreethawong, T ;
Suzuki, Y ;
Yoshikawa, S .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2005, 86 (02) :269-282