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 |
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Pages (from-to) | 623-629 |
Number of pages | 7 |
Journal | MRS Communications |
Volume | 5 |
Issue number | 4 |
DOIs | |
State | Published - 16 Sep 2015 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2015 Materials Research Society.
Funding
Funders | Funder number |
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Engineering and Physical Sciences Research Council | EP/P505550/1 |