Chiral 1D Hybrid Metal Halides with Piezoelectric Energy Harvesting and Sensing Properties

Chiral hybrid metal halides have been widely studied in the field of photondetectors, chiral optics, and spintronics due to their great structural flexibility suitable bandgaps. Inspired by such progress made abovementioned fields, continuous efforts need be paid seek other interesting applications for halides. Herein, synthesis a pair one-dimensional enantiomorphic halide piezoelectrics, R/SMPCdCl4(R/SMP = R/S-2-methylpiperazine), piezoelectric energy harvesting sensing are reported. Density functional theory calculations show that these piezoeletrics possess low elastic properties high constants (16.71, 8.39, 7.35 pC N−1). In addition, devices RMPCdCl4/PDMS (PDMS polydimethylsiloxane) composite films fabricated sensing. The harvesters with optimized content 15 wt% not only excellent performance an open-circuit voltage 2.57 V, short-circuit current 0.37 μA, power density 0.55 μW cm−2 but also outstanding stability more than 3500 cycles. Meanwhile, exhibit prominent detecting tapping, finger bending, walking, running. It is demonstrated hold potential intelligent wearable devices.