Engineering Surface Orientations for Efficient and Stable Hybrid Perovskite Single-Crystal Solar Cells

Chen Yang, Jun Yin*, Hong Li, Khulud Almasabi, Luis Gutiérrez-Arzaluz, Issam Gereige, Jean Luc Brédas*, Osman M. Bakr*, Omar F. Mohammed*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


We synthesized two types of MAPbI3single-crystal films with dominant (001) and (100) surface orientations for solar cells. We found that both MAPbI3(001) and (100) single-crystal films have efficient hole transfer into poly(triaryl)amine (PTAA), as evident from the reduced photoluminescence (PL) intensity and lifetime, as well as the type-II energy alignment. Unlike a MAPbI3(100) single-crystal film with a strong PL quenching due to efficient electron transfer to phenyl-C61-butyric acid methyl ester (PCBM), the MAPbI3(001) single-crystal film exhibits an increase in PL intensity in the presence of PCBM, which can be attributed to surface passivation. Interestingly, different from the conventional MAPbI3(100) that suffers from a significant decrease in the PCE (from 19.3 to 14.4%), the MAPbI3(001) single-crystal film shows an increase in the PCE (from 16.0 to 17.2%)

Original languageEnglish (US)
Pages (from-to)1544-1552
Number of pages9
JournalACS Energy Letters
Issue number4
StatePublished - Apr 8 2022

Bibliographical note

Funding Information:
This work was supported by the King Abdullah University of Science and Technology (KAUST), the College of Science of the University of Arizona and the Department of the Navy, Office of Naval Research award no. N00014-20-1-2110. We also acknowledge the Supercomputing Laboratory at KAUST for their computational and storage resources, as well as their gracious assistance.

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Materials Chemistry


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