Recycling Silicon Bottom Cells from End-of-Life Perovskite-Silicon Tandem Solar Cells

Guang Yang, Mengru Wang, Chengbin Fei, Hangyu Gu, Zhengshan J. Yu, Abdulwahab Alasfour, Zachary C. Holman, Jinsong Huang

Research output: Contribution to journalArticlepeer-review


Perovskite-silicon tandem cells have shown much higher efficiencies than single-junction cells, which promises further reduction of energy cost from photovoltaics. Due to the protection by perovskites, silicon subcells in perovskite-silicon tandem cells may last much longer than those in single-junction devices. Herein, we report recycling silicon bottom cells from end-of-life perovskite-silicon tandem solar cells, which further reduces their cost and enhances the sustainability. We demonstrate that silicon bottom cells can be recycled from end-of-life tandem cells by thermal delamination and chemical cleaning processes. The optoelectronic properties of silicon bottom cells were shown to be largely unchanged in the end-of-life tandem cells. The efficiencies of tandem cells refurbished from recycled silicon bottom cells are comparable to those fabricated from fresh cells.

Original languageEnglish (US)
Pages (from-to)1639-1644
Number of pages6
JournalACS Energy Letters
Issue number3
StatePublished - Mar 10 2023
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Materials Chemistry


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