Patent ID: 9640537
Date: 2017-05-02
CPC Classifications: H01L

Claim:
1. A method to form an electronic device fin comprising: epitaxially growing a fin layer of a fin epitaxial material from a substrate surface at a bottom of a trench formed between a plurality of shallow trench isolation (STI) regions having STI sidewalls defining a first width and a first height of the trench; patterning a top surface of the fin layer and etching the plurality of STI regions to form an electronic device fin from a height of the fin layer extending above etched top surfaces of the plurality of STI regions; epitaxially cladding a first conformal thickness of a first conformal epitaxial material on sidewall surfaces and a top surface of the electronic device fin; and epitaxially cladding a second conformal thickness of a second conformal epitaxial material on sidewalls and a top surface of the first conformal thickness.