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Gain enhancement of low-temperature GaAs heterojunction MSM photodetectors
Conference proceeding

Gain enhancement of low-temperature GaAs heterojunction MSM photodetectors

J Culp, B Nabet, F Castro and A Mohamed
Technical Digest. Summaries of Papers Presented at the Conference on Lasers and Electro-Optics. Conference Edition. 1998 Technical Digest Series, Vol.6 (IEEE Cat. No.98CH36178), pp 274-275
1998

Abstract

Dark current Dynamic range Electron traps Etching Gallium arsenide Heterojunctions Molecular beam epitaxial growth Optical computing Photodetectors Temperature distribution
Summary form only given. Molecular beam epitaxy (MBE) growth of the GaAs at temperature ranges of 200/spl deg/C and 600 /spl deg/C substantially affects its optical and electronic properties. Low-temperature (LT), around 200/spl deg/C, and intermediate temperature (IT), around 400/spl deg/C, growth by MBE has been employed in a variety of device applications including transistors, mixers, and photodetectors. In the device proposed here, a heterojunction of AlGaAs is grown on top of an LT/IT active layer. Trenches are formed in the AlGaGs and Schottky contacts of Ti:Au are deposited in the trenches, laterally contacting the heterojunction interface.

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