The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2015
Filed:
Nov. 26, 2013
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Matthew Charles, Grenoble, FR;
Abstract
A method for fabricating a heterojunction field-effect transistor includes implanting p-type dopants form an implanted area in a first layer of III-V semiconductor alloy, removing an upper part of the first layer and of the implanted area by maintaining vapor phase epitaxy conditions, stopping the removal when the density of the dopant at the upper face of the implanted area is maximal, forming a second layer of III-V semiconductor alloy by vapor phase epitaxy on the implanted area and on the first layer, forming a third layer of III-V semiconductor alloy by vapor phase epitaxy in order to form an electron gas layer at the interface between the third layer and the second layer, and forming a control gate on the third layer plumb with the implanted area.