Germanium Gate PhotoMOSFET Integrated to Silicon Photonics

This paper presents a novel germanium gated NMOS phototransistor integrated on a silicon photonics platform on silicon-on-insulator (SOI) substrate. The phototransistor is fabricated with a modified NMOS process flow, with germanium which is recrystallized using rapid melt growth during the source/d...

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Veröffentlicht in:IEEE journal of selected topics in quantum electronics 2014-07, Vol.20 (4), p.1-7
Hauptverfasser: Going, Ryan W., Loo, Jodi, Tsu-Jae King Liu, Wu, Ming C.
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Wu, Ming C.
description This paper presents a novel germanium gated NMOS phototransistor integrated on a silicon photonics platform on silicon-on-insulator (SOI) substrate. The phototransistor is fabricated with a modified NMOS process flow, with germanium which is recrystallized using rapid melt growth during the source/drain activation anneal step. The resulting device, with 1-μm channel length, and 8-μm channel width, demonstrates a responsivity of over 18 A/W at 1550 nm with 583 nW of incident light. By increasing the incident power to 912 μW, the device operates at 2.5 GHz. Miniaturization is expected to improve both responsivity and speed in future devices.
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subjects Capacitance
Channels
Germanium
Logic gates
optical interconnections
optical waveguide components
Optical waveguides
optoelectronic devices
photodetectors
Photodiodes
Phototransistors
Silicon
Transistors
title Germanium Gate PhotoMOSFET Integrated to Silicon Photonics
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