Francoise Kolmer Legoues

Title: Francoise Kolmer Legoues: Semiconductor Materials Inventor.

Introduction

Francoise Kolmer Legoues is an inventor associated with Peekskill, New York, and International Business Machines Corporation. Her work includes a patented approach to producing low-defect heteroepitaxial layers with adjustable lattice constants. She is credited with 2 patents.

Latest Patents

“Low Defect Density/Arbitrary Lattice Constant Heteroepitaxial Layers” describes a multilayer structure and a process for forming it. The design uses a single-crystal substrate and graded-composition epitaxial layers whose lattice spacings change gradually. This grading helps misfit dislocations relieve strain and move toward the edges of the layers, reducing the number that thread through to the top layer.

The invention addresses defects that can arise during device processing at temperatures between 700 and 900 degrees Celsius. It enables fully relaxed, incommensurate structures with low defect densities and supports combinations of different materials.

Career Highlights

Kolmer Legoues’s patent work focuses on heteroepitaxial structures, where layers of different materials are grown on a crystalline substrate. The described process aims to manage lattice mismatch and limit defects that could affect semiconductor devices.

Collaborations

The supplied information identifies Bernard S. Meyerson as a coworker and International Business Machines Corporation as Kolmer Legoues’s company affiliation.

Conclusion

Francoise Kolmer Legoues’s patent work addresses a key challenge in semiconductor materials engineering by reducing defects in heteroepitaxial layers while allowing flexibility in material combinations.