ZnO nanowires-based piezoelectric energy transducers: the role of size and semiconducting properties

T. Jalabert; M. Pusty; A. J. Lopez Garcia; A. Cresti; M. Mouis; G. Ardila

doi:10.1117/12.2665500

9 June 2023 ZnO nanowires-based piezoelectric energy transducers: the role of size and semiconducting properties

T. Jalabert, M. Pusty, A. J. Lopez Garcia , A. Cresti, M. Mouis, G. Ardila

Proceedings Volume 12584, Smart Materials for Opto-Electronic Applications; 1258406 (2023) https://doi.org/10.1117/12.2665500
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

Piezoelectric thin films are widely used in MEMS and NEMS actuators and resonators, but also in mechanical sensors and energy harvesters for IoT applications and Wireless Sensors Networks. Nanotechnology involving piezoelectric materials is a key research direction, with benefits expected from nanostructuring and the replacement of toxic materials. Piezoelectric nanocomposites based on semiconducting nanowires (NWs) are an alternative to thin films with nanostructuration benefits, such as low temperature fabrication and higher flexibility than thin films. In addition, they exhibit larger piezoelectric coefficient than their thin films counterparts. In this work we study the piezoelectric performance of vertically grown ZnO NWs based on Finite Element simulations in the PFM (Piezoresponse Force Microscopy) configuration. In this AFM (Atomic Force Microscope) mode, the AFM tip is placed in contact with the top surface of the NW while applying a voltage, thus inducing a deformation of the structure by the reverse piezoelectric effect. Different parameters are assessed: the effect of the surrounding air, the NW size and geometry and the effect of the semiconducting properties, in particular the doping level and surface traps density. The results are compared to previous theoretical approaches and experimental findings.

Citation Download Citation

T. Jalabert, M. Pusty, A. J. Lopez Garcia , A. Cresti, M. Mouis, and G. Ardila "ZnO nanowires-based piezoelectric energy transducers: the role of size and semiconducting properties", Proc. SPIE 12584, Smart Materials for Opto-Electronic Applications, 1258406 (9 June 2023); https://doi.org/10.1117/12.2665500

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KEYWORDS

Nanowires

Semiconductors

Zinc oxide

Piezoelectric effects

Atomic force microscopy

Simulations

Doping

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