Layer Number Dependent Ferroelasticity in 2D Ruddlesden-Popper Organic-inorganic Hybrid Perovskites

The experimental work at UNC is nancially supported by Center for Hybrid Organic Inorganic Semiconductors for Energy (CHOISE), an Energy Frontier Research Center funded by the Oce of Basic Energy Sciences, Oce of Science within the US Department of Energy. Huang and Li also thank the nancial support from the Department of the Defense, Defense Threat Reduction Agency under award HDTRA1-20-2-0002. The content of the information does not necessarily reect the position or the policy of the federal government, and no ocial endorsement should be inferred.