Efficiency of 10 % for quasi-solid state dye-sensitized solar cells under low light irradiance
Artikel i vetenskaplig tidskrift, 2015

Polyacrylonitrile-based gel electrolytes were prepared using tetrapropylammonium iodide salt for dye-sensitized solar cells (DSSCs). The optimized gel electrolyte exhibited an ionic conductivity of 2.6 mS cm(-1) at 25 A degrees C and the DSSC fabricated with this gel electrolyte showed open-circuit voltage, short-circuit current density, fill factor, and efficiency of 0.71 V, 11.8 mA, 51, and 4.2 %, respectively, under one sun irradiation. The efficiency of the cell increases increased with decreasing solar irradiance achieving 10 % efficiency and 80 % fill factor at 3 mW cm(-2) a low irradiance value of 3 mW cm(-2). Lower efficiencies at higher intensities were attributed to transport limitation of the redox mediators at high irradiation intensities. This work suggests that quasi-solid state DSSCs can reach efficiencies close to that of liquid electrolyte-based cells at low irradiance levels. The results open up new vistas on efficiency improvement in DSSCs by optical manipulation and control of DSSCs.

Light intensity

Dye-sensitized solar cells

Gel polymer electrolyte


Low light irradiation

Efficiency enhancement


T M W J Bandara

Chalmers, Teknisk fysik, Fasta tillståndets fysik

W. J. M. J. S. R. Jayasundara

Hdns Fernado

MAKL Dissanayake

L. A. A. De Silva

Ingvar Albinsson

Göteborgs universitet

Maurizio Furlani

Göteborgs universitet

Bengt-Erik Mellander

Chalmers, Teknisk fysik, Nukleär teknik

Journal of Applied Electrochemistry

0021-891X (ISSN) 1572-8838 (eISSN)

Vol. 45 4 289-298


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