Mesoporous PbI2 assisted growth of large perovskite grains for efficient perovskite solar cells based on ZnO nanorods

Shibin Li, Peng Zhang, Hao Chen, Yafei Wang, Detao Liu, Jiang Wu, Hojjatollah Sarvari, Zhi David Chen

Research output: Contribution to journalArticlepeer-review

106 Scopus citations


Perovskite solar cells (PSCs) have attracted great attention due to their low cost and high power conversion efficiency (PCE). However, the defects and grain boundaries in perovskite films dramatically degrade their performance. Here, we show a two-step annealing method to produce mesoporous PbI2films for growth of continuous, pinhole-free perovskite films with large grains, followed by additional ethanol vapor annealing of perovskite films to reduce the defects and grain boundaries. The large perovskite grains dramatically suppress the carrier recombination, and consequently we obtain ZnO-nanorod-based PSCs that exhibit the best efficiency of 17.3%, with high reproducibility.

Original languageEnglish
Pages (from-to)990-997
Number of pages8
JournalJournal of Power Sources
StatePublished - 2017

Bibliographical note

Funding Information:
This work was supported by National Natural Science Foundation of China under Grant Nos. 61574029, 61371046, and 61421002, and National Higher-education Institution General Research and Development Fund (ZYGX2014J044). This work was also partially supported by University of Kentucky.

Publisher Copyright:
© 2017 Elsevier B.V.


  • Carrier recombination
  • Mesoporous PbI
  • Perovskite solar cell
  • ZnO nanorods

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


Dive into the research topics of 'Mesoporous PbI2 assisted growth of large perovskite grains for efficient perovskite solar cells based on ZnO nanorods'. Together they form a unique fingerprint.

Cite this