Enhanced interfacial characteristics of perovskite solar cell with multi-functional organic hole-selective interlayer

Hansol Park, Hyojin Kye, Bum Ho Jeong, Jihyeon Heo, Sooji Hwang, Bong Gi Kim, Hui Joon Park

Research output: Contribution to journalArticlepeer-review

Abstract

In solution-processed organic and inorganic halide perovskite solar cells (PSCs), managing the interfacial characteristics between multi-layers has been a crucial factor in determining their performance and stability. Here, we newly design an indolocarbazole-based organic molecule that can enhance the interfacial properties between a solution-processed NiOx hole transport layer and perovskite in p-i-n planar PSC. Especially, to be beneficial to this architecture, its visible transparency and energy level are optimized, and its chemical structure is crosslinked for better solution processability as a hole-selective interlayer. More importantly, it can passivate the defects in the perovskite film, consequently enhancing the quality of the film and suppressing non-radiative recombination in the devices. With this interface modification, we confirm that the performance and stability of PSC devices are largely enhanced.

Original languageEnglish
Article number109837
JournalDyes and Pigments
Volume197
DOIs
StatePublished - 2022 Jan
Externally publishedYes

Keywords

  • Defect-passivation
  • Interface
  • Material design
  • Nickel oxide
  • Organic hole-selective interlayer
  • Perovskite solar cell

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