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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/046/0038

    • Keywords

       

      ZnO film; Ionic liquid; photoanode; photoelectrochemical solar cell; hydrothermal.

    • Abstract

       

      Zinc oxide (ZnO) nanoparticle suspensions were synthesized through a hydrothermal process with the addition of 3-triethylammonium-propanesulphonic acid tetrafluoroborate (TEA-PS.BF$_4$) ionic liquid (IL). Thin films prepared with the resulting suspensions were used as photoanodes for dye-sensitized solar cells (DSSCs). Rietveld refinement of X-ray diffraction patterns showed that the IL influences the anisotropy of crystallite shape, as confirmed by Raman spectroscopy, and microstrain decreases with the IL concentration. Interestingly, the IL modified the ZnO nanoparticle morphology and the average size of the pores of the film. The electrochemical characterization of DSSCs revealed improved photoanode performance with 5 wt% IL (2.23% efficiency and 7.13 mA.cm$^{–2}$ current density) compared with the film without IL (1.93% efficiency and 4.11 mA.cm$^{–2}$ current density). Electrochemical impedance spectroscopy showed that samples with IL exhibited increased resistance to charge transfer at ZnO/electrolyte interface responsible for the observed increased energy conversion.

    • Author Affiliations

       

      JACQUELINE HAHN BERNARDI1 SÉRGIO ANDRÉS ARGUELLO1 VINÍCIUS CAMPOS DE NOVAIS11 JANINE CARVALHO PADILHA1 RODRIGO PARRA2 VLADIMIR LAVAYEN3 JEFFERSON LUIS FERRARI4 MÁRCIO SOUSA GÓES1

      1. Grupo Interdisciplinar em Materiais Avançados e Funcionais, Instituto Latino-Americano de Ciências da Vida e da Natureza, Universidade Federal da Integração Latino-Americana, Foz do Iguaçu 85.867-970, Brazil
      2. Instituto de Investigaciones en Ciencia y Tecnología de Materiales, CONICET - Universidad Nacional de Mar del Plata, B7606BWV Mar del Plata, Argentina
      3. Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre 91501-970, Brazil
      4. Grupo de Desenvolvimento de Materiais Inorgânicos com Terras Raras, Instituto de Química, Universidade Federal de Uberlândia, Uberlândia 38400-902, Brazil

    • Dates

       
      Published
      28 February 2023
      Manuscript received
      27 June 2022
      Accepted
      16 October 2022
      Final version published online
      28 February 2023

    • Supplementary Material

       

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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