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    • Efficiency enhancement of dye-sensitized solar cells with addition of additives (single/binary) to ionic liquid electrolyte

      H-S Lee S-H Bae C-H Han S S Sekhon

      Volume 35 Issue 6 November 2012 pp 1003-1010

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/035/06/1003-1010

    • Keywords

       

      Dye-sensitized solar cell; additives; electrolyte; ionic liquid; efficiency.

    • Abstract

       

      The effect of addition of single and binary additives on the performance of dye-sensitized TiO2 solar cells based on electrolytes containing an ionic liquid (IL), 1,2-dimethyl-3-propylimidazolium iodide (DMPII) has been studied. Among the seven additives used, the addition of 2-(dimethylamino)-pyridine (DMAP) to IL resulted in best cell efficiency, which showed further enhancement with the addition of 5-chloro-1-ethyl-2-methylimidazole (CEMI) as second additive. The efficiency of the dye-sensitized solar cell (DSC) based on an electrolyte containing binary additives (DMAP and CEMI in equal molar ratios) has been found to increase by 62.5% from 4.35 to 7.07%. The dependence of different photovoltaic performance parameters (𝑉\oc, 𝐽sc, 𝑓𝑓 , 𝜂) of DSC upon temperature has been studied over a 30–120°C range and only a small decrease in conversion efficiency has been observed. The electrolyte containing binary additives (DMAP and CEMI) shows best cell performance up to 120°C.

    • Author Affiliations

       

      H-S Lee1 S-H Bae1 C-H Han1 S S Sekhon2 3

      1. Photovoltaic Research Centre, Korea Institute of Energy Research, Daejeon 305-343, Korea
      2. Department of Physics, Guru Nanak Dev University, Amritsar 143 005, India
      3. Department of Physics, The University of the West Indies, St.Augustine, Trinidad and Tobago

    • Dates

       
      Published
      November 2012
      Manuscript received
      28 September 2011
      Manuscript revised
      28 February 2012

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