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Updated: Apr 10, 2026
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
Conjugated polyelectrolyte hole transport layer for inverted-type perovskite solar cells
Hyosung Choi1, Cheng-Kang Mai2, Hak-Beom Kim3
1Department of Chemistry, College of Natural Sciences, Hanyang University, Seoul 133-791, Republic of Korea.
Abstract:
Organic-inorganic hybrid perovskite materials offer the potential for realization of low-cost and flexible next-generation solar cells fabricated by low-temperature solution processing. Although efficiencies of perovskite solar cells have dramatically improved up to 19% within the past 5 years, there is still considerable room for further improvement in device efficiency and stability through development of novel materials and device architectures. Here we demonstrate that inverted-type perovskite solar cells with pH-neutral and low-temperature solution-processable conjugated polyelectrolyte as the hole transport layer (instead of acidic
Pedot:
PSS) exhibit a device efficiency of over 12% and improved device stability in air. As an alternative to
Pedot:
PSS, this work is the first report on the use of an organic hole transport material that enables the formation of uniform perovskite films with complete surface coverage and the demonstration of efficient, stable perovskite/fullerene planar heterojunction solar cells.
