Patents by Inventor Celso CAVACO

Celso CAVACO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9698309
    Abstract: A method for fabricating Complementary Metal Oxide Semiconductor (CMOS) compatible contact layers in semiconductor devices is disclosed. In one embodiment, a nickel (Ni) layer is deposited on a p-type gallium nitride (GaN) layer of a GaN based structure. Further, the GaN based structure is thermally treated at a temperature range of 350° C. to 500° C. Furthermore, the Ni layer is removed using an etchant. Additionally, a CMOS compatible contact layer is deposited on the p-type GaN layer, upon removal of the Ni layer.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: July 4, 2017
    Assignee: IMEC VZW
    Inventors: Celso Cavaco, Brice De Jaeger, Marleen Van Hove, Vasyl Motsnyi
  • Publication number: 20160118542
    Abstract: A method for fabricating Complementary Metal Oxide Semiconductor (CMOS) compatible contact layers in semiconductor devices is disclosed. In one embodiment, a nickel (Ni) layer is deposited on a p-type gallium nitride (GaN) layer of a GaN based structure. Further, the GaN based structure is thermally treated at a temperature range of 350° C. to 500° C. Furthermore, the Ni layer is removed using an etchant. Additionally, a CMOS compatible contact layer is deposited on the p-type GaN layer, upon removal of the Ni layer.
    Type: Application
    Filed: January 6, 2016
    Publication date: April 28, 2016
    Applicant: IMEC VZW
    Inventors: Celso Cavaco, Brice De Jaeger, Marleen Van Hove, Vasyl Motsnyi
  • Publication number: 20150162212
    Abstract: A method for fabricating Complementary Metal Oxide Semiconductor (CMOS) compatible contact layers in semiconductor devices is disclosed. In one embodiment, a nickel (Ni) layer is deposited on a p-type gallium nitride (GaN) layer of a GaN based structure. Further, the GaN based structure is thermally treated at a temperature range of 350° C. to 500° C. Furthermore, the Ni layer is removed using an etchant. Additionally, a CMOS compatible contact layer is deposited on the p-type GaN layer, upon removal of the Ni layer.
    Type: Application
    Filed: November 24, 2014
    Publication date: June 11, 2015
    Applicant: IMEC VZW
    Inventors: Celso Cavaco, Brice De Jaeger, Marleen Van Hove, Vasyl Motsnyi
  • Patent number: 8987749
    Abstract: The disclosed technology relates to a light-emitting diode (LED) and a method of fabricating the same. In one aspect, the LED includes a GaN p-n junction formed at a junction between a p-type GaN layer and an n-type GaN layer. The LED further includes a first metal electrode layer provided on the p-type GaN layer, where the first metal electrode layer is configured to reflect light emitted by the p-n junction towards a light emitting side of the LED. The LED additionally includes an attachment layer interposed between and configured to electrically connect the p-type GaN layer and the metal electrode layer, wherein the attachment layer comprises a transition metal oxide and is configured to transmit light emitted by the p-n junction and to transmit light reflected by the metal electrode layer.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: March 24, 2015
    Assignee: IMEC
    Inventors: Barry Rand, Celso Cavaco
  • Publication number: 20140001483
    Abstract: The disclosed technology relates to a light-emitting diode (LED) and a method of fabricating the same. In one aspect, the LED includes a GaN p-n junction formed at a junction between a p-type GaN layer and an n-type GaN layer. The LED further includes a first metal electrode layer provided on the p-type GaN layer, where the first metal electrode layer is configured to reflect light emitted by the p-n junction towards a light emitting side of the LED. The LED additionally includes an attachment layer interposed between and configured to electrically connect the p-type GaN layer and the metal electrode layer, wherein the attachment layer comprises a transition metal oxide and is configured to transmit light emitted by the p-n junction and to transmit light reflected by the metal electrode layer.
    Type: Application
    Filed: June 14, 2013
    Publication date: January 2, 2014
    Inventors: Barry Rand, Celso CAVACO