Beneficial effects of PbI2 incorporated in organo-lead halide perovskite solar cells

Young Chan Kim, Nam Joong Jeon, Jun Hong Noh, Woon Seok Yang, Jangwon Seo, Jae S. Yun, Anita Ho-Baillie, Shujuan Huang, Martin A. Green, Jan Seidel, Tae Kyu Ahn, Sang Il Seok*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

412 Citations (Scopus)


Beneficial effects are demonstrated by PbI2 incorporated into perovskite materials as a light absorber in solar cells. The PbI2 distributed into the perovskite layers leads to reduced hysteresis and ionic migration, and enables the fabrication of remarkably improved solar cells with a certified power conversion efficiency of 19.75% under air-mass 1.5 global (AM 1.5G) illumination of 100 mW cm-2 intensity.

Original languageEnglish
Article number1502104
Number of pages8
JournalAdvanced Energy Materials
Issue number4
Publication statusPublished - 18 Feb 2016
Externally publishedYes


  • excess PbI
  • hybrid solar cells
  • perovskite materials
  • solar cells


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