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Electrically and optically gate-controlled Schottky/2DEG varactor
Journal article   Peer reviewed

Electrically and optically gate-controlled Schottky/2DEG varactor

Amro Anwar, Bahram Nabet and James Culp
IEEE electron device letters, v 21(10), pp 473-475
01 Oct 2000

Abstract

A novel gate-controlled varactor is reported. The three-terminal varactor is a modulation-doped heterostructure of AlGaAs/GaAs with two Schottky contacts directly made to a two-dimensional electron gas (2DEG). The third, gate, contact is formed from highly doped n super(+) GaAs material to allow an open optical window that can be used for optical gating and mixing. Structure capacitance is less than 1 pF and a change of more than 30% from the zero bias capacitance is observed with the applied gate voltage. The capacitance also increases proportionally with applied light and inversely with the terminal voltage.

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Collaboration types
Industry collaboration
Domestic collaboration
Web of Science research areas
Engineering, Electrical & Electronic
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