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    • Synthesis, characterization and electrochemical impedance study of CdS quantum dot-sensitized solar cell with reduced graphene oxide/TiO$_2$ composite photoanode

      HAFIZAH AHMAD TEJAS SHARMA CHAI YAN NG H K JUN

      Volume 46 Published: 4 March 2023 Article ID 0044

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/046/0044

    • Keywords

       

      Quantum dot-sensitized solar cells; reduced graphene oxide; efficiency; impedance spectroscopy; electron lifetime.

    • Abstract

       

      Quantum dots and reduced graphene oxide (rGO) play an important role in the performance of the third-generation solar cell. In this work, the performance of quantum dot-sensitized solar cell (QDSSC) with rGO/TiO$_2$ composite photoanode is presented. Mixing of rGO was performed with a facile preparation technique by varying the ratio of rGO (0.1–1.0 wt%) to TiO$_2$. The prepared electrode samples were characterized in order to understand the effect of rGO to the surface morphology, chemical composition and electron lifetime effect. It was observed that the addition of rGO increased the efficiency of QDSSC with maximum efficiency observed for sample having 0.5 wt% of rGO-added TiO$_2$ electrodes. However, more rGO content did not contribute to the improved performance due to increased charge recombination rate. The internal resistance and electron lifetime of the samples are further discussed in this work.

    • Author Affiliations

       

      HAFIZAH AHMAD1 TEJAS SHARMA1 CHAI YAN NG1 2 H K JUN1 2

      1. Department of Mechanical and Materials Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long Campus, 43000 Kajang, Malaysia
      2. Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Sungai Long Campus, 43000 Kajang, Malaysia

    • Dates

       
      Published
      4 March 2023
      Manuscript received
      15 July 2022
      Accepted
      19 October 2022
      Final version published online
      4 March 2023

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