Deciphering Anisotropic Energy Harvesting Responses of an Above Room Temperature Molecular Ferroelectric Copper(II) Complex Single Crystal

A molecular ferroelectric complex [Cu 2 (l-phe) 2 (bpy) 2 (H 2 O)](ClO 4 ) 2 ·2H 2 O exhibits anisotropic responses. This shows excellent mechanical/thermal energy harvesting efficiencies in single-crystal-PENG device, which exceed that of certain bulk oxides.