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An Analysis of the Effects of Low Energy Electron Radiation of Al(sub x) Ga(sub 1-x)N/GaN Modulation-Doped Field-Effect Transistors 9781423516590

An Analysis of the Effects of Low Energy Electron Radiation of Al(sub x) Ga(sub 1-x)N/GaN Modulation-Doped Field-Effect Transistors

ISBN-10: 1423516591
ISBN-13: 9781423516590
PUBLISHER: Storming Media
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Note: Not guaranteed to come with supplemental materials (access codes, CDs, DVDs)
Product Description: The effects of radiation on AlxGa1-xN/GaN MODFETs is an area of increasing interest to the USAF as these devices become developed and integrated in satellite-based systems Irradiation is also a valuable tool for analyzing the quantum-level characteristics and properties that are responsible for device operation AlxGa1-xN/GaN MODFETs were fabricated and irradiated at liquid nitrogen temperatures by 0,45-1,2MeV electrons up to doses of 6*10(exp 16) e/ cm2. Following irradiation, low temperature I-V measurements were recorded providing dose-dependent measurements Temperature-dependent I-V measurements were also made during room temperature annealing following irradiation I-V measurements indicate radiation-induced changes occur in these devices creating increased gate and drain currents These increased currents are only maintained at low temperatures (T < 300 K), It is believed that the increase in gate current is caused by an increase in the electron trap concentration of the AlxGa1-xN/GaN layer, This increase in trap concentration directly increases the trap-assisted tunneling current resulting in the observed increase in gate current The mechanism causing the increase in drain current is unknown, Several theories explaining this increase are presented along with the additional research necessary to illuminate the correct theory, This is the first experiment involving electron radiation of AlxGa1-xN/GaN MODFETs.

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PAGES: 143
CATEGORY: Science, Technology & Engineering

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