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A Substrate-Epi layer Barrier Related Detection Mechanism At RF Frequencies For the GaAs MSM Photo/Electron Detector
Conference proceeding

A Substrate-Epi layer Barrier Related Detection Mechanism At RF Frequencies For the GaAs MSM Photo/Electron Detector

Asher Madjar, Tamera A Yost and Peter R Herczfeld
2000 30th European Microwave Conference
Oct 2000

Abstract

Detectors Electrodes Electrons Epitaxial layers Gallium arsenide Molecular beam epitaxial growth Photodetectors Radio frequency Semiconductor materials Substrates
The GaAs MSM (Metal - Semiconductor - Metal) device is a very useful planar and MMIC compatible photodetector and electron-detector. We present here a newly identified secondary detection mechanism related to the interface between the semi-insulating substrate and the epitaxial layer. This new mechanism is characterized by a high detection gain but low speed. Experimental results are presented to verify the analysis, and possible applications are suggested by utilizing both the primary and secondary detection mechanisms.

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