Ultra-High Efficiency Perovskite-Perovskite Tandem Solar Cells

Kai Zhu, Zhen Li

Research output: Contribution to journalArticle


Next generation solar cells have the potential to achieve conversion efficiencies beyond the Shockley-Queisser (S-Q) limit while also significantly lowering production costs. To date, only multi-junction solar cells are able to achieve such high efficiencies. However, the current high-efficiency multi-junction cells require complex III-V-related epitaxial thin films and the use of an expensive single-crystal substrate, preventing low cost production of III-V multi-junction thin-film solar cells. In contrast to III-V films, polycrystalline thin-film solar cell technologies offer much lower production cost, but only moderate efficiencies. Fabricating highly efficient multi-junction polycrystalline thin-film solar cells remains a challenge.
Original languageAmerican English
Pages (from-to)13-23
Number of pages11
JournalMaterial Matters
Issue number1
StatePublished - 2018

NREL Publication Number

  • NREL/JA-5900-68910


  • conversion efficiency
  • multi-junction cells
  • perovskites
  • solar cells


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