Efficiency of 10 % for quasi-solid state dye-sensitized solar cells under low light irradiance
Journal article, 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.


Low light irradiation

Dye-sensitized solar cells

Light intensity

Efficiency enhancement

Gel polymer electrolyte


T M W J Bandara

Chalmers, Applied Physics, Solid State Physics

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

University of Peradeniya

Hdns Fernado

MAKL Dissanayake

National Institute of Fundamental Studies

University of Peradeniya

L. A. A. De Silva

University of West Georgia

Ingvar Albinsson

University of Gothenburg

Maurizio Furlani

University of Gothenburg

Bengt-Erik Mellander

Chalmers, Applied Physics, Nuclear Engineering

Journal of Applied Electrochemistry

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

Vol. 45 4 289-298

Driving Forces

Sustainable development

Subject Categories

Physical Sciences

Areas of Advance


Materials Science



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7/9/2019 1