Han, X., Y. Ji, L. Wu, Y. Xia, C. R. Bowen, and Y. Yang. “Coupling Enhancement of a Flexible BiFeO3 Film-Based Nanogenerator for Simultaneously Scavenging Light and Vibration Energies”. Nano-Micro Letters, vol. 14, Oct. 2022, p. 198, doi:10.1007/s40820-022-00943-0.