Patent ID: 8816436
Filing Date: 2014-08-26
Classification: H01L

Abstract:
1. A fin resistor, comprising: a plurality of epitaxial semiconductor regions disposed on a substrate in series with a plurality of fins, arranged in an alternating pattern of epitaxial semiconductor regions and fins; wherein a first epitaxial semiconductor region from the plurality of epitaxial semiconductor regions forms a first endpoint and a second epitaxial semiconductor region from the plurality of epitaxial semiconductor regions forms a second endpoint for the alternating pattern; wherein each of the plurality of epitaxial semiconductor regions has a first resistance and each of the plurality of fins has a second resistance, wherein the first resistance is different than the second resistance; wherein the plurality of epitaxial semiconductor regions have a dopant concentration ranging from about 1E20 atoms per cubic centimeter to about 2E21 atoms per cubic centimeter; and wherein the plurality of fins have a non-uniform dopant concentration profile, wherein a dopant concentration in an outer portion of each fin is higher than a dopant concentration in an interior portion of each fin.