Issue 6, 2011

Photovoltage improvements and recombination suppression by montmorillonite addition to PEO gel electrolyte for dye-sensitized solar cells

Abstract

Montmorillonite (MMT) added to electrolytes has been reported in the literature to facilitate the transport of I/I3, and improve the ionic conductivity and consequent photocurrent of dye-sensitized solar cells (DSCs). This paper firstly observes, investigates and reports that MMT addition to a poly(ethylene oxide) (PEO)-based gel electrolyte not only improves the ionic conductivity of the gel electrolyte, but also increases the photovoltage and decreases the dark current. From the results of electrochemical impedance spectroscopy (EIS) and transient photovoltage spectra, we evidence that MMT in the polymer gel electrolyte can efficiently retard the charge recombination that occurs at the TiO2/dye/electrolyte interfaces.

Graphical abstract: Photovoltage improvements and recombination suppression by montmorillonite addition to PEO gel electrolyte for dye-sensitized solar cells

Article information

Article type
Paper
Submitted
20 Sep 2010
Accepted
26 Oct 2010
First published
25 Nov 2010

Phys. Chem. Chem. Phys., 2011,13, 2417-2421

Photovoltage improvements and recombination suppression by montmorillonite addition to PEO gel electrolyte for dye-sensitized solar cells

Y. Geng, Y. Shi, L. Wang, B. Ma, R. Gao, Y. Zhu, H. Dong and Y. Qiu, Phys. Chem. Chem. Phys., 2011, 13, 2417 DOI: 10.1039/C0CP01866J

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