Mechanical properties of APbX_3 (A = Cs or CH_3NH_3; X= I or Br) perovskite single crystals

By Y. Rakita, Sidney R. Cohen, N. Kedem, G. Hodes, D. Cahen. 2015

300 citations recorded by the source corpus.

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 APb X _3 ( A = Cs, CH_3NH_3; X = I, Br). The Young’s moduli are ≈14, 19.5, and 16 GPa, for CH_3NH_3Pbl_3, CH_3NH_3PbBr_3, and CsPbBr_3, 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.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/f86491555b2fb5a6fd78a9917bc359279e0e2dea

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In Electrical and Electronic Engineering

1. Hong-xia Wang
2. Ken Ostrikov

In Electronic, Optical and Magnetic Materials

1. Hong-xia Wang
2. Ken Ostrikov

In Materials Chemistry

1. Cheng Yan
2. Hong-xia Wang
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Citations in the corpus

• Insight into lead-free organic-inorganic hybrid perovskites for photovoltaics and optoelectronics: A first-principles study (2018, result): “10 compounds have been studied by others [48-53] and are found to be consistent with our calculated results (Table 1).”