Determination of optical roughness in EUV structures

A computer-implemented method for determining optical roughness in a semiconductor pattern structure that includes receiving, using a processor, optical responses spectra collected from the semiconductor pattern structure and constructing, using the processor optical critical dimension (OCD) models...

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Hauptverfasser: Muthinti, Gangadhara Raja, Bonam, Ravi K
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creator Muthinti, Gangadhara Raja
Bonam, Ravi K
description A computer-implemented method for determining optical roughness in a semiconductor pattern structure that includes receiving, using a processor, optical responses spectra collected from the semiconductor pattern structure and constructing, using the processor optical critical dimension (OCD) models by using a set of input parameters for each layer of the semiconductor pattern structure. The method further includes calculating, using the processor, theoretical optical responses from a theoretical input generated by the OCD models. In addition, the method provides for comparing, using the processor, the optical responses spectra of the semiconductor pattern structure to the theoretical optical responses to determine output parameters for the optical roughness of the semiconductor pattern structure.
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subjects APPARATUS SPECIALLY ADAPTED THEREFOR
BASIC ELECTRIC ELEMENTS
CINEMATOGRAPHY
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
ELECTROGRAPHY
HOLOGRAPHY
MATERIALS THEREFOR
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
ORIGINALS THEREFOR
PHOTOGRAPHY
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES
PHYSICS
SEMICONDUCTOR DEVICES
TESTING
title Determination of optical roughness in EUV structures
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