USA As Represented by Secretary of the Navy

Kevin Jensen

Jonathan L Shaw

Henry F Gray

John Bradley Boos

Bradford B Pate

Michael S McDonald

James G Champlain

Doewon Park

Joan E Yater

Byoung-don Kong

A compound field emitter (CFE) includes a first surface possessing a field enhancement factor &#x3e;1, and a second surface possessing one or both of a field enhancement factor &#x3e;1, or a low work function, wherein the second surface is coated, formed or applied upon the first surface. The second surface has a characteristic size at least 3 times smaller than the first surface, and the outer surface includes a coating of calcium aluminate 12CaO-7Al2O3.

Thermally enhanced compound field emitter

A device having: a substrate having a dielectric surface; a gate electrode; a drain electrode; a source electrode having a conductive contact and a two-dimensional material edge; and a dielectric material between the source and the gate. The source is adjacent to the gate. The drain electrode is not laterally between the edge and the gate electrode, and the distance from the drain electrode to the edge is greater than the distance from the gate electrode to the edge. The edge does not contact any other component of the device. The gate, drain, and source are not in electrical contact with each other. There is a line of sight or electron path from the edge to the drain electrode.

Vacuum transistor structure using graphene edge field emitter and screen electrode

A field emitter is disclosed comprising a graded electron affinity surface ayer. The graded electron affinity layer provides for increased transconductance, reduced energy distribution of emitted electrons, reduced noise and increased uniformity in its operation.

Graded electron affinity semiconductor field emitter

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Washington, DC, United States of America

Kevin Jensen