Improved efficiency of ternary-blended films in organic solar cell

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Organic solar cells (OSCs) have attracted great interest as next-generation energy sources. In this study, a diketopyrrolopyrrole (DPP)-based electron-rich small-molecule donor, α-DPP-DT, was incorporated into a P3HT:PCBM binary film to fabricate ternary-blended OSCs. The OSCs were fabricated with the conventional configuration of ITO/PEDOT:PSS/active layer/LiF/Al and exhibited a power conversion efficiency of 2.12 %, which was greater than those of the two corresponding binary-blended devices. Both the open-circuit voltage and short-circuit current density values of the ternary films were lay between the corresponding values of the two binary films. The proposed working mechanism of the ternary-blended films is based on an alloy structure of two donors rather than on a cascade structure.

Original languageEnglish
Pages (from-to)38-40
Number of pages3
JournalApplied Science and Convergence Technology
Issue number1
StatePublished - 2021


  • Organic photovoltaic cell
  • Organic solar cell
  • Ternary cell


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