Polymer Hole Transport Material Functional Group Tuning for Improved Perovskite Solar Cell Performance

Jacob Hoffman, Daniel Astridge, So Yeon Park, Fei Zhang, Mengjin Yang, David Moore, Steven Harvey, Kai Zhu, Alan Sellinger

Research output: Contribution to journalArticlepeer-review

5 Scopus Citations


As lead halide perovskites (LHPs) continue to achieve success as a light-harvesting material in perovskite solar cells (PSCs), exploring and understanding other materials in the device stack become increasingly important. Particularly, selection of suitable hole transport materials (HTMs) that demonstrate high performance and stability is imperative in the design of P-I-N PSCs. Presented here are a family of 12 structurally related polymers based on either fluorene or carbazole main chains with select aromatic side groups that introduce tunable properties for use in PSCs. How properties such as the highest occupied molecular orbital energy level, conductivity, glass-transition temperature, and wettability of the HTM affect the PSC performance is explored. Devices that incorporate the polymer HTMs perform well relative to PTAA in benchmark P-I-N PSC architectures while exhibiting similar or superior stability under accelerated aging studies. The relative synthetic simplicity and resultant performance of the HTMs in PSCs coupled with the ability to customize properties with different functional groups demonstrates the potential of this family of HTMs for a variety of LHP materials.

Original languageAmerican English
Pages (from-to)8601-8610
Number of pages10
JournalACS Applied Energy Materials
Issue number7
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

NREL Publication Number

  • NREL/JA-5900-83260


  • Buchwald-Hartwig coupling
  • carbazole
  • device stability
  • fluorene
  • hole transport materials
  • perovskite solar cells
  • polymers
  • tunable HOMO


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