Amorphous metal hot electron transistor
First Claim
1. A device, comprising:
- a non-conducting substrate;
an amorphous metal layer on the non-conducting substrate;
a tunneling dielectric layer on the amorphous metal layer;
a first electrode and a second electrode on the tunneling dielectric layer, each overlapping the amorphous metal layer;
a second dielectric layer on the first and second electrodes; and
a third electrode on the second dielectric layer, the third electrode overlapping the second electrode and the amorphous metal layer, the first and second electrodes being between the third electrode and the amorphous metal layer.
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Accused Products
Abstract
Amorphous multi-component metallic films can be used to improve the performance of electronic devices such as resistors, diodes, and thin film transistors. An amorphous hot electron transistor (HET) having co-planar emitter and base electrodes provides electrical properties and performance advantages over existing vertical HET structures. Emitter and the base terminals of the transistor are both formed in an upper crystalline metal layer of an amorphous nonlinear resistor. The emitter and the base are adjacent to one another and spaced apart by a gap. The presence of the gap results in two-way Fowler-Nordheim tunneling between the crystalline metal layer and the amorphous metal layer, and symmetric I-V performance. Meanwhile, forming the emitter and base terminals in the same layer simplifies the HET fabrication process by reducing the number of patterning steps.
17 Citations
21 Claims
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1. A device, comprising:
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a non-conducting substrate; an amorphous metal layer on the non-conducting substrate; a tunneling dielectric layer on the amorphous metal layer; a first electrode and a second electrode on the tunneling dielectric layer, each overlapping the amorphous metal layer; a second dielectric layer on the first and second electrodes; and a third electrode on the second dielectric layer, the third electrode overlapping the second electrode and the amorphous metal layer, the first and second electrodes being between the third electrode and the amorphous metal layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device, comprising:
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a substrate; an amorphous metal layer on the substrate, the amorphous metal layer having a length extending along a first direction and a width extending along a second direction that is transverse to the first direction; a tunneling oxide layer on the amorphous metal layer; an emitter electrode on the tunneling oxide layer, the emitter electrode overlapping a first portion of the amorphous metal layer, the emitter electrode having a length extending along the second direction and a width extending along the first direction; a base electrode on the tunneling oxide layer, the base electrode overlapping a second portion of the amorphous metal layer, the base electrode having a length extending along the second direction and a width extending along the first direction; an insulator on the emitter electrode and the base electrode; and a collector electrode on the insulator, the collector electrode overlapping the base electrode and the second portion of the amorphous metal layer. - View Dependent Claims (13, 14)
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15. A device, comprising:
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a substrate; an amorphous metal layer on the substrate; a first insulator on the amorphous metal layer; a first electrode on the first insulator and overlapping a first portion of the amorphous metal layer; a second electrode on the first insulator and overlapping a second portion of the amorphous metal layer; a second insulator; a first contact through the second insulator and coupled to the first electrode; a second contact through the second insulator and coupled to the second electrode; and a third electrode on the second insulator and overlapping the second portion of the amorphous metal layer. - View Dependent Claims (16, 17, 18, 19)
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20. A device, comprising:
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a non-conducting substrate; an amorphous metal layer on the non-conducting substrate; a tunneling dielectric layer on the amorphous metal layer; a first electrode and a second electrode on the tunneling dielectric layer, each overlapping the amorphous metal layer; a second dielectric layer on the first and second electrodes; and a third electrode on the second dielectric layer, the third electrode overlapping the second electrode and the amorphous metal layer, wherein a thickness of a first portion of the tunneling dielectric layer between the first electrode and the amorphous metal layer is greater than a thickness of a second portion of the tunneling dielectric layer between the second electrode and the amorphous metal layer. - View Dependent Claims (21)
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Specification