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3999 results about "Contact layer" patented technology

Contact Layers. Contact layer dressings are thin, non-adherent sheets placed on an open wound bed to protect tissue from direct contact with other agents or dressings applied to the wound. They conform to the shape of the wound and are porous to allow exudate to pass through for absorption by an overlying, secondary dressing.

Methods of fabricating nitride-based transistors having regrown ohmic contact regions and nitride-based transistors having regrown ohmic contact regions

Transistor fabrication includes forming a nitride-based channel layer on a substrate, forming a barrier layer on the nitride-based channel layer, forming a contact recess in the barrier layer to expose a contact region of the nitride-based channel layer, forming a contact layer on the exposed contact region of the nitride-based channel layer, for example, using a low temperature deposition process, forming an ohmic contact on the contact layer and forming a gate contact disposed on the barrier layer adjacent the ohmic contact. A high electron mobility transistor (HEMT) and methods of fabricating a HEMT are also provided. The HEMT includes a nitride-based channel layer on a substrate, a barrier layer on the nitride-based channel layer, a contact recess in the barrier layer that extends into the channel layer, an n-type nitride-based semiconductor material contact region on the nitride-based channel layer in the contact recess, an ohmic contact on the nitride-based contact region and a gate contact disposed on the barrier layer adjacent the ohmic contact. The n-type nitride-based semiconductor material contact region and the nitride-based channel layer include a surface area enlargement structure.
Owner:CREE INC

String Interconnection of Inverted Metamorphic Multijunction Solar Cells on Flexible Perforated Carriers

A method of forming a multijunction solar cell string by providing a first multijunction solar cell including a contact pad disposed adjacent the top surface of the multijunction solar cell along a first peripheral edge thereof; providing a second multijunction solar cell disposed adjacent said first multijunction solar cell, having a top surface and a bottom surface, and including a cut-out extending from a second peripheral edge along the top surface of the second solar cell located adjacent the first peripheral edge of said first multijunction solar cell, and extending to a metal contact layer adjacent the bottom surface of said second multijunction solar cell to allow an electrical contact to be made to the metal contact layer; mounting said first and said second multijunction solar cells on a first side of a perforated carrier; attaching a first electrical interconnect to the contact pad of said first multijunction solar cell, the electrical interconnect extending through said perforated carrier; attaching a second electrical interconnect to the metal contact layer of said second multijunction solar cell, the electrical interconnect extending through said perforated carrier; and connecting said first electrical interconnect to said second electrical interconnect.
Owner:EMCORE SOLAR POWER
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