TY - JOUR
T1 - In Situ Observation of Current Generation in ZnO Nanowire Based Nanogenerators Using a CAFM Integrated into an SEM
AU - Wen, Chao
AU - Jing, Xu
AU - Hitzel, Frank F.
AU - Pan, Chengbin
AU - Benstetter, Guenther
AU - Lanza, Mario
N1 - Generated from Scopus record by KAUST IRTS on 2021-03-16
PY - 2019/5/1
Y1 - 2019/5/1
N2 - In this work, we monitor in situ the movement of ZnO piezoelectric nanowires by using a conductive atomic force microscope integrated into a scanning electron microscope. This setup allows seeing the bending of the nanowires and simultaneously measuring the currents generated. We conclude that the currents generated not only come from piezoelectric effect, but also from contact potential and triboelectric effect. These contributions have been ignored in all previous reports in this field, meaning that the power conversion efficiency of these devices may have been systematically overestimated. Our study helps to clarify the working mechanism of piezoelectric nanogenerators based on ZnO nanowires.
AB - In this work, we monitor in situ the movement of ZnO piezoelectric nanowires by using a conductive atomic force microscope integrated into a scanning electron microscope. This setup allows seeing the bending of the nanowires and simultaneously measuring the currents generated. We conclude that the currents generated not only come from piezoelectric effect, but also from contact potential and triboelectric effect. These contributions have been ignored in all previous reports in this field, meaning that the power conversion efficiency of these devices may have been systematically overestimated. Our study helps to clarify the working mechanism of piezoelectric nanogenerators based on ZnO nanowires.
UR - https://pubs.acs.org/doi/10.1021/acsami.9b00447
UR - http://www.scopus.com/inward/record.url?scp=85065099343&partnerID=8YFLogxK
U2 - 10.1021/acsami.9b00447
DO - 10.1021/acsami.9b00447
M3 - Article
SN - 1944-8252
VL - 11
SP - 15183
EP - 15188
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 17
ER -