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<p>In this study, a polymer electrolyte—composed of poly(ethyl methacrylate) (PEMA) as the host polymer, doped with the ionic liquid tributylmethylphosphonium iodide (TMPI)—is synthesized for use as an electrolyte in dye-sensitized solar cells (DSSCs). The ionic conductivity of the PEMA:TMPI polymer electrolyte is determined using electrochemical impedance spectroscopy (EIS). It is observed that the conductivity of the polymer electrolyte increases in the presence of the ionic liquid, reaching a maximum value of 5.08 × 10<sup>−4</sup> S/cm with 20 wt.% TMPI under ambient conditions. Fourier transform infrared spectroscopy confirms the complexation between PEMA and TMPI. X-ray diffraction and polarized light microscopy studies confirm the alteration of the polymer's crystallinity. The photovoltaic performance of the DSSC fabricated with the optimized polymer electrolyte demonstrated a solar conversion efficiency of 1.45% under solar illumination.</p>

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Ionic liquid tributyl methylphosphonium iodide infused polyethylmethacrylate based polymer electrolyte for dye sensitized solar cell application

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月11日

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  • Ibrahim Zakariya’u,
  • Pramod K. Singh,
  • Monika Michalska,
  • Markus Diantoro,
  • Muhd Zu Azhan Yahya,
  • Mustafa A. Alheety,
  • Suneyana Rawat,
  • Rahul Johari

摘要

In this study, a polymer electrolyte—composed of poly(ethyl methacrylate) (PEMA) as the host polymer, doped with the ionic liquid tributylmethylphosphonium iodide (TMPI)—is synthesized for use as an electrolyte in dye-sensitized solar cells (DSSCs). The ionic conductivity of the PEMA:TMPI polymer electrolyte is determined using electrochemical impedance spectroscopy (EIS). It is observed that the conductivity of the polymer electrolyte increases in the presence of the ionic liquid, reaching a maximum value of 5.08 × 10−4 S/cm with 20 wt.% TMPI under ambient conditions. Fourier transform infrared spectroscopy confirms the complexation between PEMA and TMPI. X-ray diffraction and polarized light microscopy studies confirm the alteration of the polymer's crystallinity. The photovoltaic performance of the DSSC fabricated with the optimized polymer electrolyte demonstrated a solar conversion efficiency of 1.45% under solar illumination.