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<p>Incorporation of natural fibers with nanomaterials is a novel approach to bio-derived, sustainable working electrodes for dye-sensitized solar cells (DSSCs). Zinc oxide (ZnO) has exceptional electron mobility and hence has significant potential as a photoanode for DSSCs. However, its inadequate absorption of visible light and the significant surface recombination impede performance enhancement. This work presents the synthesis of highly porous lignocellulose (LC) fibers and a copper-doped ZnO (Cu-ZnO)-based nanocomposite via a facile microwave-assisted method. LC fibers were collected from waste corn skin to enhance the absorption and environmentally safe parameters of the photoanode. Structural characterizations revealed successful integration of Cu-ZnO within LC fibers for better light absorption. Current density versus voltage (J-V) measurements showed that LC/Cu-ZnO-based DSSC cells achieved a higher efficiency of 4.0% compared with pure Cu-ZnO (2.9%). The presented LC/Cu-ZnO binary composite sheet is highly suitable for the development of flexible, biodegradable, pouch-based DSSCs with improved light absorption for use in high-tech applications such as disposable, bendable electronics.</p>

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Eco-Friendly and Highly Porous Cu-Doped ZnO Electrodes for High-Performance DSSCs

  • 期刊论文

  • 发表日期：

    2026年5月29日

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  • Ishrat Sultana,
  • Ifra Rao,
  • Sameen Ilyas,
  • Saba Ramzan,
  • Qaisar Abbas,
  • Imran Rafiq,
  • Amna Mir,
  • Hamid Latif,
  • Sultan Akhtar,
  • Shahzada Qamar Hussain,
  • Aamir Razaq

摘要

Incorporation of natural fibers with nanomaterials is a novel approach to bio-derived, sustainable working electrodes for dye-sensitized solar cells (DSSCs). Zinc oxide (ZnO) has exceptional electron mobility and hence has significant potential as a photoanode for DSSCs. However, its inadequate absorption of visible light and the significant surface recombination impede performance enhancement. This work presents the synthesis of highly porous lignocellulose (LC) fibers and a copper-doped ZnO (Cu-ZnO)-based nanocomposite via a facile microwave-assisted method. LC fibers were collected from waste corn skin to enhance the absorption and environmentally safe parameters of the photoanode. Structural characterizations revealed successful integration of Cu-ZnO within LC fibers for better light absorption. Current density versus voltage (J-V) measurements showed that LC/Cu-ZnO-based DSSC cells achieved a higher efficiency of 4.0% compared with pure Cu-ZnO (2.9%). The presented LC/Cu-ZnO binary composite sheet is highly suitable for the development of flexible, biodegradable, pouch-based DSSCs with improved light absorption for use in high-tech applications such as disposable, bendable electronics.