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Long-term stability of dye-sensitized solar cells using a facile gel polymer electrolyte

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Abstract

Herein, we demonstrate a facile low temperature approach to prepare a gel polymer electrolyte (GPE) based on the triiodide/iodide redox couple in a quasi-solid-state dye-sensitized solar cell (DSSC). Only one polymeric agent (i.e., hydroxypropyl cellulose (HPC)) is used for the preparation of a non-volatile GPE system for the standard liquid electrolyte containing 1-methyl-3-propylimidazolium iodide (MPII). The prepared GPE completely penetrates into a TiO2 photoanode at room temperature due to the uniform distribution of Ti, Ru and I elements in the cross-section of the electrode, forming an interpenetrating GPE/TiO2 network to access all dye molecules. The GPE with the optimum HPC : MPII weight ratio shows a high ionic conductivity of 17.8  ×  10−3 S cm−1 and a viscosity of 350 cP. The DSSC fabricated using such gel polymer electrolyte shows the best performance and energy conversion efficiency of 7.44%, with a short-circuit current density, an open-circuit voltage and a fill factor of 15.37 mA cm−2, 707 mV and 68%, respectively. The constructed quasi-solid-state cell has long-term operational stability under realistic outdoor conditions, with 90% of the initial device's efficiency after 600 h.

Graphical abstract: Long-term stability of dye-sensitized solar cells using a facile gel polymer electrolyte

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Publication details

The article was received on 02 May 2018, accepted on 03 Jul 2018 and first published on 04 Jul 2018


Article type: Paper
DOI: 10.1039/C8NJ02157K
Citation: New J. Chem., 2018, Advance Article
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    Long-term stability of dye-sensitized solar cells using a facile gel polymer electrolyte

    A. Ma’alinia, H. Asgari Moghaddam, E. Nouri and M. R. Mohammadi, New J. Chem., 2018, Advance Article , DOI: 10.1039/C8NJ02157K

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