Mechanical Properties of Single Crystal Organic–Inorganic Hybrid Perovskite MAPbX3 (MA = CH3NH3, X = Cl, Br, I)

Jianyu Li, Chunyu Ge, Zifan Zhao, Mingyu Hu, Jun Wang, Feng Qian, Xiaoyu Chong, Jing Feng*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

Abstract

Mechanical properties are among the crucial parameters for multilayer hybrid perovskite-based devices. Here, the mechanical properties of the high-quality single-crystalline MAPbX3 (MA = CH3NH3, X = Cl, Br, I), including the hardness (H) and Young’s modulus (E), are systematically studied using the three-dimensional nanoindentation (3D nanoindentation) method. In the sequence of Cl, Br, and I, the hardness and Young’s modulus of MAPbX3 decrease gradually. The hardness of MAPbX3 ranges from 0.31 to 0.57 GPa, and Young’s modulus values are less than 30 GPa. The low hardness and Young’s modulus are attributed to the weak lattice framework composed of Pb-X and the weak hydrogen bond between CH3NH3+ and the octahedron. The relationship between the hardness and Young’s modulus of MAPbX3 is also described. Generally, this work provides the favorable parameters required to further support the design and modification of investigations regarding perovskite-based devices.

Original languageEnglish
Article number854
Number of pages14
JournalCoatings
Volume13
Issue number5
Early online date30 Apr 2023
DOIs
Publication statusPublished - May 2023

Scopus Subject Areas

  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

User-Defined Keywords

  • 3D nanoindentation
  • mechanical properties
  • perovskite
  • Young’s modulus

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