High-performance solar-blind AlGaN photodetectors
Date
2004
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Source Title
Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
Print ISSN
1092-8081
Electronic ISSN
Publisher
IEEE
Volume
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Pages
290 - 291
Language
English
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Abstract
High-performance aluminum gallium nitride (AlGaN)-based solar-blind (SB) photodetectors were demonstrated using different device structures. The Al x-Ga1-xN layers structure were grown by metalorganic chemical vapor deposition (MOCVD) on sapphire structures. n+ and p+ ohmic contacts on GaN were formed with non-annealed titanium (Ti)/aluminum (Al) and nickel (Ni)/ gold (Au) alloys. Spectral UV photoresponse measurements confirmed the solar-blind response of the devices.
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Keywords
Bandwidth , Current density , Current voltage characteristics , Electric breakdown , Etching , Light absorption , Ohmic contacts , Photomultipliers , Sapphire , Schottky barrier diodes , Semiconducting aluminum compounds , Thermal noise , Ultraviolet radiation , Engine monitoring , High-speed measurements , Solar-blind (SB) detectors , Underwater communication system , Photodetectors