Electrical characteristics of Au/p-AlSb metal-insulator-semiconductor Schottky diodes

Electrical characteristics of Au/p-AlSb metal-insulator-semiconductor Schottky diodes

Metal-insulator-semiconductor Schottky barrier diodes have been prepared on p-type bulk AlSb by evaporating gold on a chemically etched (100) AlSb surface. The existence of an oxide-rich interfacial layer between gold and AlSb of ∼70 Å thickness was shown by means of secondary ion mass spectrometry...

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Veröffentlicht in:Journal of applied physics 1989-06, Vol.65 (12), p.4924-4927
Hauptverfasser: SHATHA SADIQ, JOULLIE, A
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Applied sciences
Diodes
Electronics
Exact sciences and technology
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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JOULLIE, A
description Metal-insulator-semiconductor Schottky barrier diodes have been prepared on p-type bulk AlSb by evaporating gold on a chemically etched (100) AlSb surface. The existence of an oxide-rich interfacial layer between gold and AlSb of ∼70 Å thickness was shown by means of secondary ion mass spectrometry analysis. The current-voltage (I-V) and capacitance-voltage (C-V) characteristics were measured. The barrier height qφBp(0) obtained from the Richardson plot log(Is/T2) vs (1/nT) is 0.71 eV. The 1/C2-vs-V plot was not a straight line. From the ideality factor at room temperature (n=1.4) and the intercept voltage V0 of the 1/C2-vs-V curve (V0=1.2 V), a density Ds of interface states was evaluated around 5×1011 cm−2 eV−1.
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subjects Applied sciences
Diodes
Electronics
Exact sciences and technology
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
title Electrical characteristics of Au/p-AlSb metal-insulator-semiconductor Schottky diodes
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