Affiliation:
1. State Key Laboratory of Robotics and Systems Harbin Institute of Technology Harbin 150080 China
Abstract
AbstractThe piezoelectric properties of semiconductor micro/nanowires (M/NWs) are crucial for optimizing semiconductors’ electronic structure and carrier dynamics. However, the dynamic characterization of the piezoelectric properties of M/NWs remains challenging. Here, a Kelvin probe force microscopy technique based on a dual‐probe atomic force microscope is developed to achieve in situ piezoelectric potential measurements of dynamic bending MWs. This technique can not only characterize the surface potential on different crystal faces of ZnO MWs in a natural state through controllable axial rotation, but also investigate the piezoelectric potential of the dynamically bending flake‐like ZnO MW at different points and under different strain loads. The results show that the surface potentials of different faces/positions of the ZnO MWs are varied significantly, and determine that the quasi‐static conditions piezo‐strain factor of the flake‐like ZnO MW is 0.28 V/%, while the factor was 0.14 V/% under low‐frequency (⩽5 Hz) sinusoidal strain loading. This work provides a significant methodology to further study piezoelectric materials, and it aims to facilitate their applications in piezoelectric devices and systems.
Funder
National Natural Science Foundation of China
Subject
General Materials Science,General Chemistry
Cited by
19 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献