2025/07/01 by Kamila Thompson, Kalpak Duddella, Micah Haseman +1 · 1 voice
Engineering · Materials Science · #Acoustic Wave Resonator Technologies #Electronic and Structural Properties of Oxides #ZnO doping and properties
paper · doi:10.1116/6.0004416
openalex publication_date 2025/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/26
Direct nanoscale cathodoluminescence and Kelvin probe voltage correlation of native point defects in ZnO microwires with their tip piezovoltages show that they contain electrically charged defects which redistribute both laterally and longitudinally on a nanoscale under applied mechanical strain, setting up electric fields that strongly affect microwire piezoelectric tip voltages. The nanoscale distribution and increased densities of these native defects increase piezovoltage and tip power, of general use for piezoelectric applications including transducers and energy harvesting such as biomedical devices. The dependence of these distributions on specific defect donor vs acceptor nature opens avenues for nanowire growth methods, which can increase nanowire power generation.