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High-performance ternary blend polymer solar cells involving both energy transfer and hole relay processes

Author

Listed:
  • Luyao Lu

    (The University of Chicago)

  • Wei Chen

    (Argonne National Laboratory
    Institute for Molecular Engineering, The University of Chicago)

  • Tao Xu

    (The University of Chicago)

  • Luping Yu

    (The University of Chicago)

Abstract

The integration of multiple materials with complementary absorptions into a single junction device is regarded as an efficient way to enhance the power conversion efficiency (PCE) of organic solar cells (OSCs). However, because of increased complexity with one more component, only limited high-performance ternary systems have been demonstrated previously. Here we report an efficient ternary blend OSC with a PCE of 9.2%. We show that the third component can reduce surface trap densities in the ternary blend. Detailed studies unravel that the improved performance results from synergistic effects of enlarged open circuit voltage, suppressed trap-assisted recombination, enhanced light absorption, increased hole extraction, efficient energy transfer and better morphology. The working mechanism and high device performance demonstrate new insights and design guidelines for high-performance ternary blend solar cells and suggest that ternary structure is a promising platform to boost the efficiency of OSCs.

Suggested Citation

  • Luyao Lu & Wei Chen & Tao Xu & Luping Yu, 2015. "High-performance ternary blend polymer solar cells involving both energy transfer and hole relay processes," Nature Communications, Nature, vol. 6(1), pages 1-7, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8327
    DOI: 10.1038/ncomms8327
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    1. Miron Krassas & Christos Polyzoidis & Pavlos Tzourmpakis & Dimitriοs M. Kosmidis & George Viskadouros & Nikolaos Kornilios & George Charalambidis & Vasilis Nikolaou & Athanassios G. Coutsolelos & Kons, 2020. "Benzothiadiazole Based Cascade Material to Boost the Performance of Inverted Ternary Organic Solar Cells," Energies, MDPI, vol. 13(2), pages 1-12, January.
    2. Hong, Kai Jeat & Tan, Sin Tee & Chong, Kok-Keong & Yap, Chi Chin & Hj Jumali, Mohammad Hafizuddin & Loo, Yueh-Lin, 2019. "Numerical analysis with experimental verification to predict outdoor power conversion efficiency of inverted organic solar devices," Renewable Energy, Elsevier, vol. 135(C), pages 589-596.

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