III-nitride quantum-well field effect transistors
First Claim
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1. A transistor comprising:
- a substrate;
a first buffer layer deposited on said substrate;
a first epilayer deposited on said buffer layer;
a second epilayer deposited on said first epilayer;
a GaN channel layer deposited on said second epilayer;
an AlGaN alloy epilayer deposited on said GaN channel layer;
a plurality of electrical connections deposited on said AlGaN alloy epilayer comprising;
a source connection, a gate connection and a drain connection thereby permitting a difference of electrical potential to be applied to said AlGaN alloy layer so as to permit operation as a transistor.
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Abstract
A transistor with improved device characteristics includes a substrate, a first buffer layer deposited on the substrate, a highly resistive epilayer deposited on the buffer layer, a second epilayer deposited on the highly resistive epilayer, a channel layer deposited on the second epilayer, an AlGaN alloy epilayer deposited on the channel layer, and source, gate, and drain connections deposited on the AlGaN alloy epilayer. The highly resistive epilayer may include AlGaN, InAlGaN, AlBN, or AlN compositions. The channel layer may include InGaN, graded InGaN, multilayers of InGaN and GaN, or GaN.
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Citations
48 Claims
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1. A transistor comprising:
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a substrate;
a first buffer layer deposited on said substrate;
a first epilayer deposited on said buffer layer;
a second epilayer deposited on said first epilayer;
a GaN channel layer deposited on said second epilayer;
an AlGaN alloy epilayer deposited on said GaN channel layer;
a plurality of electrical connections deposited on said AlGaN alloy epilayer comprising;
a source connection, a gate connection and a drain connection thereby permitting a difference of electrical potential to be applied to said AlGaN alloy layer so as to permit operation as a transistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A transistor comprising:
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an insulating or semi-insulating substrate;
a first buffer layer deposited on said substrate;
a highly resistive aluminum nitride (AlN) epilayer deposited on said buffer layer;
an aluminum gallium nitride epilayer deposited on said highly resistive aluminum nitride (AlN) epilayer;
a GaN channel layer deposited on said aluminum gallium nitride epilayer;
an AlGaN alloy epilayer deposited on said GaN channel layer;
a plurality of electrical connections deposited on said AlGaN alloy epilayer comprising;
a source connection, a gate connection and a drain connection thereby permitting a difference of electrical potential to be applied to said AlGaN alloy layer so as to permit operation as a transistor. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A transistor comprising:
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an insulating or semi-insulating substrate;
a first buffer layer deposited on said substrate;
a highly resistive aluminum nitride (AlN) epilayer deposited on said buffer layer;
an aluminum gallium nitride epilayer deposited on said highly resistive aluminum nitride (AlN) epilayer;
a backside doped GaN channel layer deposited on said aluminum gallium nitride epilayer;
an n-type doped AlGaN alloy epilayer deposited on said GaN channel layer;
a plurality of electrical connections deposited on said AlGaN alloy epilayer comprising;
a source connection, a gate connection and a drain connection thereby permitting a difference of electrical potential to be applied to said AlGaN alloy layer so as to permit operation as a transistor. - View Dependent Claims (24, 25, 26, 27)
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28. A transistor comprising:
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a substrate;
a first buffer layer deposited on said substrate;
a first epilayer deposited on said buffer layer;
a second epilayer deposited on said first epilayer;
a channel layer deposited on said second epilayer;
an AlGaN alloy epilayer deposited on said channel layer;
a plurality of electrical connections deposited on said AlGaN alloy epilayer comprising;
a source connection, a gate connection and a drain connection thereby permitting a difference of electrical potential to be applied to said AlGaN alloy layer so as to permit operation as a transistor. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification