Green energies, with their new candidates, have attracted worldwide interest due to the threatening of the global environmental pollution and the energy crises. The piezoelectric materials can generate an output signal with a strain, and has become one of the key research objects in the field of energy and materials. The lead-free system has attracted much attention among the piezoelectric material systems due to its comparable piezoelectric properties and the lead-free nature. With the development of micro/nano-structures, one dimensional lead-free piezoelectric micro/nano-materials have become one of the most popular research topics in the field of piezoelectric systems. However, the preparation and the characterization of one-dimensional lead-free piezoelectric micro/nano-materials is still in the initial stage. Moreover, the related research and application of the energy conversion and other aspects are also under the exploration. One dimensional lead-free piezoelectric micro/nano-materials are taken as a focus in this review, together with the syntheses methods of crystal growth and a brief description of the application in the field of the energy conversion, and the prospect of one-dimensional lead-free piezoelectric micro/nano materials in the field of energy conversion is also discussed.

lead-free piezoelectrics  /  one dimensional materials  /  micro/nano-scale  /  energy conversion