1. Dual Band Deep Ultraviolet AlGaN Photodetectors
- Author
-
Aslam, S, Miko, L, Stahle, C, Franz, D, Pugel, D, Guan, B, Zhang, J. P, and Gaska, R
- Subjects
Electronics And Electrical Engineering - Abstract
We report on the design, fabrication and characterization of a back-illuminated voltage bias selectable dual-band AlGaN UV photodetector. The photodetector can separate UVA and W-B band radiation by bias switching a two terminal n-p-n homojunction structure that is fabricated in the same pixel. When a forward bias is applied between the top and bottom electrodes, the detector can sense UV-A and reject W-B band radiation. Alternatively, under reverse bias, the photodetector can sense UV-B and reject UV-A band radiation.
- Published
- 2007