Harnessing chemical functions of ionic liquids for perovskite solar cells

Fangfang Fan, Yalan Zhang, Mingwei Hao, Feifei Xin*, Zhongmin Zhou*, Yuanyuan Zhou*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The remarkable ramping of record power conversion efficiencies in perovskite solar cells (PSCs) has stimulated the growth of this technology towards commercialization. However, there remain challenges and opportunities for further improving their efficiency and stability. Featuring the variety of functional group in the constituting ions, ionic liquids (ILs) exhibit versatile properties and functions that can be leveraged to the development of improved PSCs. Herein with a systematic review on the recent progress in the application of ILs to PSCs, we show that based on the different roles of ILs in the film and device settings, IL can facilitate the thin-film synthesis of perovskites, improve the properties of charge-transport layers, and ameliorate the interfacial energetics at device interfaces. In particular, the ILs-perovskite interactions of two different types (Lewis acid-base interaction and hydrogen bonding) are the essential chemistries underpinning observed efficiency and stability improvements in PSCs, which represent a vast research paradigm in the field of energy chemistry.

Original languageEnglish
Pages (from-to)797-810
Number of pages14
JournalJournal of Energy Chemistry
Volume68
DOIs
Publication statusPublished - May 2022

Scopus Subject Areas

  • Energy (miscellaneous)
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Electrochemistry

User-Defined Keywords

  • Chemical interaction
  • Efficiency
  • Ionic liquid
  • Perovskite solar cells
  • Stability

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