Mechanical properties of APbX3 (A = Cs or CH3NH3; X = i or Br) perovskite single crystals

Yevgeny Rakita; Sidney R. Cohen; Nir Klein Kedem; Gary Hodes; David Cahen

doi:10.1557/mrc.2015.69

Mechanical properties of APbX₃ (A = Cs or CH₃NH₃; X = i or Br) perovskite single crystals

Yevgeny Rakita, Sidney R. Cohen, Nir Klein Kedem, Gary Hodes, David Cahen

Research output: Contribution to journal › Article › peer-review

298 Scopus citations

Abstract

The remarkable optoelectronic and especially photovoltaic performance of hybrid organic-inorganic perovskite (HOIP) materials drives efforts to connect materials properties to this performance. From nano-indentation experiments on solution-grown single crystals we obtain elastic modulus and nano-hardness values of APbX 3 (A = Cs, CH₃NH₃; X = I, Br). The Young's moduli are ∼14, 19.5, and 16 GPa, for CH₃NH₃PbI₃, CH₃NH₃PbBr₃, and CsPbBr₃, respectively, lending credence to theoretically calculated values. We discuss the possible relevance of our results to suggested self-healing, ion diffusion, and ease of manufacturing. Using our results, together with literature data on elastic moduli, we classified HOIPs amongst the relevant material groups, based on their elastomechanical properties.

Original language	English
Pages (from-to)	623-629
Number of pages	7
Journal	MRS Communications
Volume	5
Issue number	4
DOIs	https://doi.org/10.1557/mrc.2015.69
State	Published - 16 Sep 2015
Externally published	Yes

ASJC Scopus subject areas

General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1557/mrc.2015.69

Cite this

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abstract = "The remarkable optoelectronic and especially photovoltaic performance of hybrid organic-inorganic perovskite (HOIP) materials drives efforts to connect materials properties to this performance. From nano-indentation experiments on solution-grown single crystals we obtain elastic modulus and nano-hardness values of APbX 3 (A = Cs, CH3NH3; X = I, Br). The Young's moduli are ∼14, 19.5, and 16 GPa, for CH3NH3PbI3, CH3NH3PbBr3, and CsPbBr3, respectively, lending credence to theoretically calculated values. We discuss the possible relevance of our results to suggested self-healing, ion diffusion, and ease of manufacturing. Using our results, together with literature data on elastic moduli, we classified HOIPs amongst the relevant material groups, based on their elastomechanical properties.",

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AU - Hodes, Gary

AU - Cahen, David

PY - 2015/9/16

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AB - The remarkable optoelectronic and especially photovoltaic performance of hybrid organic-inorganic perovskite (HOIP) materials drives efforts to connect materials properties to this performance. From nano-indentation experiments on solution-grown single crystals we obtain elastic modulus and nano-hardness values of APbX 3 (A = Cs, CH3NH3; X = I, Br). The Young's moduli are ∼14, 19.5, and 16 GPa, for CH3NH3PbI3, CH3NH3PbBr3, and CsPbBr3, respectively, lending credence to theoretically calculated values. We discuss the possible relevance of our results to suggested self-healing, ion diffusion, and ease of manufacturing. Using our results, together with literature data on elastic moduli, we classified HOIPs amongst the relevant material groups, based on their elastomechanical properties.

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