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Related Experiment Video

Updated: Apr 12, 2026

Synthesis and Characterization of High c-axis ZnO Thin Film by Plasma Enhanced Chemical Vapor Deposition System and its UV Photodetector Application

Synthesis and Characterization of High c-axis ZnO Thin Film by Plasma Enhanced Chemical Vapor Deposition System and its UV Photodetector Application

Published on: October 3, 2015

Acoustoelectric Effect due to an In-Depth Inhomogeneous Conductivity Change in ZnO/Fused Silica Substrates.

Cinzia Caliendo¹, Massimiliano Benetti², Domenico Cannatà²

¹Institute for Photonics and Nanotechnologies, IFN-CNR, Via del Fosso del Cavaliere 100, 00133 Rome, Italy.

Sensors (Basel, Switzerland)

|October 16, 2024

Summary

This study explores the acoustoelectric effect in ZnO films using UV light. Researchers observed changes in wave velocity and insertion loss, confirming theoretical predictions for both fundamental and harmonic waves.

Keywords:

Rayleigh wave UV light ZnO acoustoelectric effect harmonic wave high-power UV light piezoelectricity

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Last Updated: Apr 12, 2026

Synthesis and Characterization of High c-axis ZnO Thin Film by Plasma Enhanced Chemical Vapor Deposition System and its UV Photodetector Application

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Published on: October 3, 2015

Aerosol-assisted Chemical Vapor Deposition of Metal Oxide Structures: Zinc Oxide Rods

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Fabrication of Schottky Diodes on Zn-polar BeMgZnO/ZnO Heterostructure Grown by Plasma-assisted Molecular Beam Epitaxy

Fabrication of Schottky Diodes on Zn-polar BeMgZnO/ZnO Heterostructure Grown by Plasma-assisted Molecular Beam Epitaxy

Published on: October 23, 2018

Area of Science:

Materials Science
Acoustics
Optoelectronics

Background:

Piezoelectric zinc oxide (ZnO) films are crucial for acousto-optic devices.
The acoustoelectric (AE) effect, influenced by light absorption, can alter wave propagation characteristics.

Purpose of the Study:

To investigate the acoustoelectric (AE) effect in piezoelectric ZnO films induced by ultraviolet (UV) light.
To analyze the impact of UV light on surface acoustic wave (SAW) velocity and insertion loss (IL).
To compare experimental findings with theoretical models based on conductivity changes.

Main Methods:

RF reactive magnetron sputtering was used to grow ZnO films on fused silica substrates.
A surface acoustic wave (SAW) delay line with Al interdigital transducers (IDTs) was fabricated.
UV light illumination was applied to the ZnO surface, and wave propagation was analyzed at different power levels.

Main Results:

UV light absorption altered the electrical conductivity of ZnO films.
Phase velocity of fundamental and third harmonic Rayleigh waves decreased with increasing UV power.
Insertion loss behavior differed for fundamental (single peak) and third harmonic (further peak) waves at higher UV power.

Conclusions:

Experimental results confirmed theoretical predictions of wave behavior influenced by UV-induced conductivity changes.
The study differentiates between AE effects caused by volume versus surface conductivity variations.
The findings provide insights into controlling acoustic wave propagation in ZnO films via optical means.