학술논문

Ultraviolet-sensitive AlGaN-based surface acoustic wave devices
Document Type
Conference
Source
Proceedings of IEEE Sensors, 2004. IEEE sensors 2004 Sensors, 2004. Proceedings of IEEE. :1345-1348 vol.3 2004
Subject
Components, Circuits, Devices and Systems
Signal Processing and Analysis
Surface acoustic wave devices
Acoustic waves
Surface acoustic waves
Acoustic sensors
Optical surface waves
Surface resistance
Photonic band gap
Optical sensors
Oscillators
Gallium nitride
Language
Abstract
Two types of novel ultraviolet-sensitive III-nitride based surface acoustic wave devices are presented. We demonstrate the Al/sub x/Ga/sub l-x/N-based surface acoustic wave delay-line oscillator, which is applied as an ultraviolet sensor capable of solar-blind operation with remote wireless pickup of the output signal. Also, we report on the SAW-induced high-frequency resistance modulation effect, which is dramatically increased under ultraviolet illumination.