Ion-implantation assisted wet chemical etching of III-V nitrides and alloys
First Claim
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1. An etching process comprising:
- implanting ions at selected regions of a film comprising at least one of a III-V nitride and a III-V nitride alloy to form an ion implanted film, the III-V nitride being a nitride formed from elements of Group III and Group V of the periodic table and the III-V nitride alloy being a nitride alloy formed from elements of Group III and Group V of the periodic table; and
selectively etching the selected regions of the ion implanted film with an etching liquid.
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Abstract
A process for etching III-V nitride and III-V nitride alloy materials first implants selected regions of the materials with ions and then selectively etches the implanted regions in an etching liquid, such as an aqueous base. The etch depth is controlled by the energy, mass and dose of the implanted ions.
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Citations
21 Claims
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1. An etching process comprising:
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implanting ions at selected regions of a film comprising at least one of a III-V nitride and a III-V nitride alloy to form an ion implanted film, the III-V nitride being a nitride formed from elements of Group III and Group V of the periodic table and the III-V nitride alloy being a nitride alloy formed from elements of Group III and Group V of the periodic table; and selectively etching the selected regions of the ion implanted film with an etching liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. an etching process, comprising:
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providing an ion implanted film comprising at least one of gallium nitride and aluminum gallium indium nitride; and etching the ion implanted film with an etching liquid.
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Specification