Barrier lowering in dye-sensitized porous-TiO2 solar cells

被引：19

作者：

Dittrich, T ^{[1
]}

Beer, P

Koch, F

Weidmann, J

Lauermann, I

机构：

[1] Tech Univ Munich, Phys Dept E16, D-85748 Garching, Germany

[2] INAP GmbH, D-45886 Gelsenkirchen, Germany

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 13期

关键词：

D O I：

10.1063/1.122320

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The current-voltage characteristics of dye-sensitized porous-TiO2 (por-TiO2) solar cells are investigated in the dark and under illumination at light intensities up to 1500 W/m(2) and temperatures between -5 and 80 degrees C. In the dark, the barrier height and the ideality factor of the por-TiO2/electrolyte contact are 0.67 eV and 1.05, respectively. The very low effective Richardson constant indicates the importance of diffusion for transport. A current-dependent effective barrier height has been established under illumination of dye-sensitized por-TiO2 solar cells. The barrier lowering effect should be caused by the low neutralization rate of the positively charged dye radicals in the electrolyte. (C) 1998 American Institute of Physics. [S0003-6951(98)02337-7].

引用

页码：1901 / 1903

页数：3

共 13 条

[1]

Dittrich T, 1998, PHYS STATUS SOLIDI A, V165, pR5, DOI 10.1002/(SICI)1521-396X(199802)165:2<R5::AID-PSSA99995>3.0.CO

[2]

2-9

[3] LIGHT-INDUCED REDOX REACTIONS IN NANOCRYSTALLINE SYSTEMS [J].

HAGFELDT, A ;

GRATZEL, M .

CHEMICAL REVIEWS, 1995, 95 (01) :49-68

[4] Measurement of ultrafast photoinduced electron transfer from chemically anchored Ru-dye molecules into empty electronic states in a colloidal anatase TiO2 film [J].

Hannappel, T ;

Burfeindt, B ;

Storck, W ;

Willig, F .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (35) :6799-6802

[5]

KNEBEL O, UNPUB

[6]

LAUERMANN I, UNPUB

[7] 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

[8] A LOW-COST, HIGH-EFFICIENCY SOLAR-CELL BASED ON DYE-SENSITIZED COLLOIDAL TIO2 FILMS [J].

OREGAN, B ;

GRATZEL, M .

NATURE, 1991, 353 (6346) :737-740

[9] INFLUENCE OF TRAP FILLING ON PHOTOCURRENT TRANSIENTS IN POLYCRYSTALLINE TIO2 [J].

SCHWARZBURG, K ;

WILLIG, F .

APPLIED PHYSICS LETTERS, 1991, 58 (22) :2520-2522

[10] TESTING OF DYE-SENSITIZED TIO2 SOLAR-CELLS .1. EXPERIMENTAL PHOTOCURRENT OUTPUT AND CONVERSION EFFICIENCIES [J].

SMESTAD, G ;

BIGNOZZI, C ;

ARGAZZI, R .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 1994, 32 (03) :259-272

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