Photodetectors using III-V nitrides
First Claim
1. A detector comprising at least one single crystal III-V nitride film deposited by electron cyclotron resonance microwave plasma-assisted molecular beam epitaxy, wherein the (μ
- τ
) product of the detector is controlled by varying parameters of the deposition process for the single crystal film.
3 Assignments
0 Petitions
Accused Products
Abstract
A photodetector using a III-V nitride and having predetermined electrical properties is disclosed. The photodetector includes a substrate with interdigitated electrodes formed on its surface. The substrate has a sapphire base layer, a buffer layer formed from a III-V nitride and a single crystal III-V nitride film. The three layers are formed by electron cyclotron resonance microwave plasma-assisted molecular beam epitaxy (ECR-assisted MBE). Use of the ECR-assisted MBE process allows control and predetermination of the electrical properties of the photodetector.
-
Citations
30 Claims
-
1. A detector comprising at least one single crystal III-V nitride film deposited by electron cyclotron resonance microwave plasma-assisted molecular beam epitaxy, wherein the (μ
- τ
) product of the detector is controlled by varying parameters of the deposition process for the single crystal film. - View Dependent Claims (2, 3, 4, 5)
- τ
-
6. A photodetector comprising:
-
a III-V nitride film having a predetermined (μ
τ
) product;a first electrode deposited on a surface of the film; a second electrode deposited on the surface of the film, the second electrode being spaced from the first electrode; and
,a voltage source connected across the first and second electrodes, said voltage source creating an electric field within the film; wherein when the surface of the film upon which the electrodes are deposited is subjected to a photon illumination, electron hole pairs are created and flow within the film because of the electric field. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A method of making a photodetector having predetermined (μ
- τ
) product;fabricating a III-V nitride film so as to control its resistivity; depositing a first electrode on a surface of the film; depositing a second electrode on the surface of the film, the second electrode being spaced from the first electrode; and
,providing a voltage source connected across the first and second electrodes. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
- τ
Specification