Analysis of UV light photodetectors using slanted finger interdigital surface acoustic wave devices
Journal
Journal of Applied Physics
Journal Volume
105
Journal Issue
2
Date Issued
2009
Author(s)
Abstract
In this study, an ultraviolet array photodetector with lithium-based slanted finger interdigital transducers (SFITs) and ZnO optically active areas is developed. The array photodetector can obtain multiple ultraviolet light intensities within a single measurement and is proven to be capable of measuring a distributed light field. The acoustoelectric effect is introduced in the SFIT coupling-of-mode simulation to evaluate the performance of the array photodetector. The simulated results have good agreement with the experimental responses. An optimum design of the SFIT and ZnO for the performance of the array photodetector is analyzed. To evaluate the performance of a surface acoustic wave photodetector, several design parameters such as working frequency, size of optically active areas, and separation gaps between active areas, are discussed in detail. Important results of design parameters from the detailed analysis are summarized in this study which are useful for the application of the proposed photodector.
SDGs
Type
journal article