A review on the performance enhancement techniques of piezoelectric energy harvesters

The significant advancement in the field of energy-harvesting techniques in the last decades makes it a possible alternative to provide a continuous power supply for low-power electronic devices exclusively for implanted biomedical devices. This makes it a most promising and widespread research topic. This paper presents a comprehensive review of the different methods of improving the performance of piezoelectric energy harvesters (PZEH). This includes the different key aspects, such as the basic fundamentals of the piezoelectric mechanism and performance-enhancing techniques, such as structural modification, broadband techniques, and the application of PZEH in the field of biomedical devices.