LAUSR

Abstract Interdigital electrodes, BiFeO3 and Sm doped BiFeO3 nanofibers and corresponding photovoltaic devices were obtained by semiconductor technology and electrostatic spinning method. The interdigital electrodes have prefect structure and the nanofibers have uniform morphology both before and after annealing process examined by SEM and AFM, respectively. The ferroelectric and piezoelectric properties of the BiFeO3 and Sm doped BiFeO3 nanofibers were demonstrated by PFM. After Sm doping, the BiFeO3 nanofibers have improved ferroelectricity. Compared with BiFeO3 nanofiber photovoltaic device, Sm doped BiFeO3 nanofiber photovoltaic device has improved photovoltaic performance with increased photocurrent and energy conversion efficiency is improved to 1.65 times. The BiFeO3-based nanofibers are very promising ferroelectric photovoltaic materials for high performance photovoltaic devices.