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Synthesis of high polydispersity index polylactic acid and its application as gel electrolyte towards fabrication of dye-sensitized solar cells

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Abstract

Dye-sensitized solar cells (DSSC) are became more popular as a new type of solar cell because of their environmental friendliness and low cost. Their large-scale application still requires overcoming the problems of volatilization and loss of liquid electrolytes, which leads to a reduction in the lifetime of the cell. In this paper, Polylactic acid (PLA) with a different Polydispersity index (PDI) is first synthesized via the Aluminium ring-opening method and then stirred with liquid electrolyte for 24 h to form polymer gel electrolyte (PGE). The PGE is then characterized using various analytical tools. Results show a strong interaction between hydroxyl and carboxylate groups of PEG and PLA to form a chelating structure (egg-box model).The polymer gel electrolyte exhibit high ionic conductivity (7.60 × 10–4 S cm−1). The fabricated dye-sensitized solar cells configuration (Glass/FTO/TiO2/MK-2 dye/PGE/Pt/FTO/glass) shows a photocurrent conversion efficiency (PCE) of 5.64% under a solar light illumination of 85 mW cm-2.

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Acknowledgements

The research work was financially supported by Solar Energy Research Initiative-DST, New Delhi (DST/TM/SERI/CHY/18-19) and the Ministry of Science and Technology of Taiwan (Grant MOST 107-2113-M-037-001). H.-Y. Chen wants to thank the Centre for Research Resources and Development at Kaohsiung Medical University for instrumentation and equipment support.

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Authors and Affiliations

  1. Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Tiruchirappalli-620 015, India

    Ahalya Gunasekaran & Sambandam Anandan

  2. Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan

    Hsuan-Ying Chen & Vinoth Kumar Ponnusamy

  3. Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan

    Hsuan-Ying Chen

  4. Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 80708, Taiwan

    Hsuan-Ying Chen & Vinoth Kumar Ponnusamy

  5. Institute for Polymers, Composites and Biomaterials (IPCB), CNR, P.le E. Fermi 1, Portici, Naples, Italy

    Andrea Sorrentino

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Gunasekaran, A., Chen, HY., Ponnusamy, V.K. et al. Synthesis of high polydispersity index polylactic acid and its application as gel electrolyte towards fabrication of dye-sensitized solar cells. J Polym Res 28, 252 (2021). https://doi.org/10.1007/s10965-021-02615-w

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