Wide-Bandgap Metal Halide Perovskites for Tandem Solar Cells

Jinhui Tong, Qi Jiang, Fei Zhang, Seok Beom Kang, Dong Hoe Kim, Kai Zhu

Research output: Contribution to journalArticlepeer-review

106 Scopus Citations


Metal halide perovskite solar cells (PSCs) have become the most promising new-generation solar cell technology. To date, perovskites also represent the only polycrystalline thin-film absorber technology that has enabled >20% efficiency for wide-bandgap solar cells, making wide-bandgap PSCs uniquely positioned to enable high-efficiency and low-cost tandem solar cell technologies by coupling wide-bandgap perovskites with low-bandgap absorbers. In this Focus Review, we highlight recent research progress on developing wide-bandgap PSCs, including the key mechanisms associated with efficiency loss and instability as well as strategies for overcoming these challenges. We also discuss recent accomplishments and research trends on using wide-bandgap PSCs in perovskite-based tandem configurations, including perovskite/perovskite, perovskite/Si, perovskite/CIGS, and other emerging tandem technologies.

Original languageAmerican English
Pages (from-to)232-248
Number of pages17
JournalACS Energy Letters
Issue number1
StatePublished - 8 Jan 2021

Bibliographical note

Publisher Copyright:
© 2021 American Chemical Society. All rights reserved.

NREL Publication Number

  • NREL/JA-5900-78349


  • perovskite
  • solar cells
  • tandem
  • wide bandgap


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