Natural Bio-additive Chlorophyll Derivative Enables 17.30% Efficiency Organic Solar Cells

Shengnan Duan, Shin ichi Sasaki, Deman Han, Guangquan Zhang, Dengfeng Li, Chunbao Feng, Xiao Feng Wang, Hitoshi Tamiaki, Sein Chung, Kilwon Cho, Gang Li, Shirong Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

Additive-assisted donor and acceptor domain regulation is regarded as an effective strategy to further release the potential photovoltaic performance of the existing organic solar cells (OSCs). Meanwhile, it is also critical to find high-efficient, stable, non-toxic, and low-cost biological materials as bio-additives to replace the traditional toxic halogen-based additives. In this study, bio-additives derived from a natural chlorophyll pigment named as ZnChl and H2Chl are employed to optimize the morphology and molecular stack of the PM6:Y6 active layer. The eutectic molecular stack of the blends is more ordered and tighter after introducing the bio-additive chlorophyll derivatives to the system compared to the pristine PM6:Y6 blends. Owing to such a fine-tuned donor-acceptor microstructure network, the photovoltaic performance of the H2Chl bio-additive-based OSC achieves a 17.30% PCE and ZnChl-based device obtains an efficiency of 16.61%, which is much higher than that of the control device with a 15.97% PCE. The result proves the feasibility of introducing environmental- and eco-friendly chlorophyll derivatives as bio-additives to further improve the photovoltaic performance of the OSCs.

Original languageEnglish
Article number202302820
Pages (from-to)1-7
JournalAdvanced Functional Materials
DOIs
Publication statusAccepted/In press - 2023

Keywords

  • bio-additives
  • chlorophyll derivatives
  • natural pigments
  • organic solar cells
  • photovoltaic performance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Biomaterials
  • General Materials Science
  • Condensed Matter Physics
  • Electrochemistry

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