Enhanced Stability of Perovskite Solar Cells through Corrosion-Free Pyridine Derivatives in Hole-Transporting Materials.

Yue, Youfeng; Salim, NovianaTjitra; Wu, Yongzhen; Yang, Xudong; Islam, Ashraful; Chen, Wei; Liu, Jian; Bi, Enbin et al. · Adv Mater · 2016

basic_science · Level V

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Abstract

The molecular structure of pyridine derivatives is critical to perovskite solar cell performance, especially stability. Most of the pyridine additives easily form complexes with perovskite. A new pyridine additive with a long alkyl chain substituted at its o-position does not corrode perovskite. The stability of devices containing this additive is the highest among the investigated cells.