Effect of the potassium iodide in tetrapropyl ammonium iodide-polyvinyl alcohol based gel polymer electrolyte for dye-sensitized solar cells

Document Type

Article

Publication Date

12-1-2021

Abstract

Low ionic conductivity in gel polymer electrolytes with large cations is undoubtedly a critical issue. This research's main objective was to explore potassium iodide influences on the conductivity in gel polymer electrolytes. PVA-based gel polymer electrolytes (GPEs), including tetrapropyl ammonium iodide and potassium iodide have been prepared. The GPEs have been characterized by X-ray diffraction (XRD) and electrical impedance spectroscopy (EIS). The GPEs prepared haves been recognized as an amorphous region through the X-ray diffraction analysis. The GPE sample's conductivity (100 wt% of tetrapropyl ammonium iodide) of 6.24 x 10(-3) S cm(-1) was the lowest. The existence of potassium iodide in the GPE system improves the conductivity. The conductivity of 9.72 x 10(-3) S cm(-1) of GPE containing 30 wt% of tetrapropyl ammonium iodide and 70 wt% of potassium iodide was the highest derived from the EIS analysis. All prepared GPEs have the potential to be used for dye-sensitized solar cell applications. The dyesensitized solar cell efficiency has been improved by similar to 30% if potassium iodide exists in the GPE system.

Keywords

Gel polymer electrolytes, Ionic conductivity, Potassium iodide, Tetrapropyl ammonium iodide, DSSCs efficiency

Publication Title

Optik

Divisions

PHYSICS

Volume

247

Publisher

Elsevier

Publisher Location

HACKERBRUCKE 6, 80335 MUNICH, GERMANY

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