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<p>The invention of non-fullerene acceptors has made it possible for organic solar cells to quickly improve their power conversion efficiencies to over 19%. This gives organic solar cells more promising for use in real-world applications. Molecular engineering-based tunability of the absorbance spectra, appropriate molecular orbital energy levels, energy gaps, high electron affinities, and solubility are non-fullerene acceptors’ key advantages. The electron-rich central units play an important role in enhancing the absorption spectra and the overall performance of non-fullerene acceptors. These findings show how the electron-rich/poor structure affects the non-fullerene acceptors’ photophysical and optoelectronic capabilities.</p> Graphical abstract <p></p>

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Impact of core structure on the absorption wavelength and efficiency of non-fullerene acceptors for organic solar cells

  • 期刊论文

  • 发表日期：

    2025年6月25日

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  • Saju Joseph,
  • K. M. Sulekha,
  • Sony Devassy,
  • Simil Thomas,
  • Treesa Reji,
  • Sabu Thomas,
  • Nandakumar Kalarikkal

摘要

The invention of non-fullerene acceptors has made it possible for organic solar cells to quickly improve their power conversion efficiencies to over 19%. This gives organic solar cells more promising for use in real-world applications. Molecular engineering-based tunability of the absorbance spectra, appropriate molecular orbital energy levels, energy gaps, high electron affinities, and solubility are non-fullerene acceptors’ key advantages. The electron-rich central units play an important role in enhancing the absorption spectra and the overall performance of non-fullerene acceptors. These findings show how the electron-rich/poor structure affects the non-fullerene acceptors’ photophysical and optoelectronic capabilities.

Graphical abstract