High-frequency silico acousto-electronics

Abstract

A brief introduction 1 1.1 Introduction to surface acoustic waves 1 1.1.1 Acousto-electronic transport 2 1.2 Experimental methods 4 1.2.1 Fabrication 4 1.2.2 Measurements 6 1.3 Outline of Thesis 8 2 Opto-acousto-electronic devices 11 2.1 Introduction 11 2.2 Device structure and fabrication 12 2.3 Vector network analysis 13 2.4 Opto-acousto-electronic characterization 15 2.4.1 Experimental setup and characterization at 300 K 16 2.4.2 Characterization at 10 K 17 2.4.3 RF and laser triggering 18 2.5 Discussion and conclusion 20 3 Defect origin of acoustic propagation losses in ZnO thin-films on silicon 23 3.1 Introduction and device structure 23 3.1.