Electrochemical impedance spectroscopic analysis of dye-sensitized solar cells

被引：1889

作者：

Wang, Q ^{[1
]}

Moser, JE ^{[1
]}

Grätzel, M ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 31期

关键词：

D O I：

10.1021/jp052768h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electrochemical impedance spectroscopy (EIS) has been performed to investigate electronic and ionic processes in dye-sensitized solar cells (DSC). A theoretical model has been elaborated, to interpret the frequency response of the device. The high-frequency feature is attributed to the charge transfer at the counter electrode while the response in the intermediate-frequency region is associated with the electron transport in the mesoscopic TiO2 film and the back reaction at the TiO2/electrolyte interface. The low-frequency region reflects the diffusion in the electrolyte. Using an appropriate equivalent circuit, the electron transport rate and electron lifetime in the mesoscopic film have been derived, which agree with the values derived from transient photocurrent and photovoltage measurements. The EIS measurements show that DSC performance variations under prolonged thermal aging result mainly from the decrease in the lifetime of the conduction band electron in the TiO2 film.

引用

页码：14945 / 14953

页数：9

共 42 条

[1]

[Anonymous], 1987, Impedance spectroscopy: Emphasizing Solid Materials and Systems

[2]

Barbe CJ, 1997, J AM CERAM SOC, V80, P3157, DOI 10.1111/j.1151-2916.1997.tb03245.x

[3]

Bard A. J., 2000, ELECTROCHEMICAL METH

[4]

Benkstein KD, 2003, J PHYS CHEM B, V107, P7759, DOI [10.1021/jp022681l, 10.1021/jp0226811]

[5]

Bisquert J, 2002, J PHYS CHEM B, V106, P325, DOI [10.1021/jp011941g, 10.1021/jp01194lg]

[6] Determination of rate constants for charge transfer and the distribution of semiconductor and electrolyte electronic energy levels in dye-sensitized solar cells by open-circuit photovoltage decay method [J].

Bisquert, J ;

Zaban, A ;

Greenshtein, M ;

Mora-Seró, I .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (41) :13550-13559

[7] Chemical capacitance of nanostructured semiconductors: its origin and significance for nanocomposite solar cells [J].

Bisquert, J .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2003, 5 (24) :5360-5364

[8] Interpretation of the time constants measured by kinetic techniques in nanostructured semiconductor electrodes and dye-sensitized solar cells [J].

Bisquert, J ;

Vikhrenko, VS .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (07) :2313-2322

[9] Influence of the boundaries in the impedance of porous film electrodes [J].

Bisquert, J .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2000, 2 (18) :4185-4192

[10] Doubling exponent models for the analysis of porous film electrodes by impedance.: Relaxation of TiO2 nanoporous in aqueous solution [J].

Bisquert, J ;

Garcia-Belmonte, G ;

Fabregat-Santiago, F ;

Ferriols, NS ;

Bogdanoff, P ;

Pereira, EC .

JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (10) :2287-2298

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