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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/045/0074

    • Keywords

       

      Microtablet; perovskite; potassium; TiO$_2$; solar cells.

    • Abstract

       

      Metal doping into TiO$_2$ photoanode of the perovskite-sensitized solar cell (PSSC) is a technique to increase its photosensitivity, electrical conductivity, lifetime and charge transport. It is also to reduce recombination of photogeneratedel ectrons and holes. This study reports the use of potassium-doped TiO$_2$ microtablet as a photoanode of PSSC. The effect of potassium content on the properties of K-doped TiO$_2$ and the performance parameter on the device has been investigated. The X-ray diffraction studies reveal that the dominant anatase phase exists in the sample without the presence of potassium phase, signifying that it is successfully doped into TiO$_2$. The morphology of the sample is microtablets, their size decreases with the concentration of K$_2$PtCl$_4$. The energy gap was found to increase with the doping content until its optimum content at 0.4 mM K$_2$PtCl$_4$. It is found that the photosensitivity of potassium-doped TiO$_2$ increases with the increase of potassium precursor concentration and optimum at the concentration of 0.4 mM corresponding with the power conversion efficiency of 5.71%. This is due to the lowest energy gap and charge transfer resistance. This is also due to the longest carrier lifetime and carrier transport time.

    • Author Affiliations

       

      A Y A AL-SHE’IREY1 M Y A RAHMAN2 M I A UMAR3 I SUGIHARTONO4 V FAUZIA5 A A UMAR2

      1. Department of Physics, Faculty of Applied Sciences, Thamar University, 87246 Dhamar, Yemen
      2. Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
      3. Faculty of Tarbiyah, Institut Agama Islam Negeri, 27211 Batu Sangkar, Indonesia
      4. Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, 13220 Jakarta, Indonesia
      5. Faculty of Mathematics and Natural Sciences, Universitas Indonesia, 16424 Jakarta, Indonesia

    • Dates

       
      Published
      25 April 2022
      Manuscript received
      16 September 2021
      Accepted
      12 December 2021
      Final version published online
      25 April 2022

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