This inventor holds 4 USPTO granted patents. Top assignees: Arizona State University, Soitec. Active years: 2012-2015.
Company Filing History:
4 out of 2,150 
4 out of 535 
Years Active: 2012-2015
Title: Innovations of Ilsu Han in Semiconductor Technology
Introduction
Ilsu Han is a notable inventor based in Tempe, AZ (US), recognized for his contributions to semiconductor technology. He holds a total of 4 patents, showcasing his innovative approaches in the field of III-nitride semiconductor materials.
Latest Patents
One of his latest patents is titled "Template layers for heteroepitaxial deposition of III-nitride semiconductor materials using HVPE processes." This invention outlines methods for depositing III-nitride semiconductor materials on substrates, which includes forming a nucleation layer with a microstructure that comprises amorphous III-nitride semiconductor material. The nucleation layer can be annealed to create crystalline islands of epitaxial nucleation material on the substrate's surface. These islands can then be grown and coalesced to form a nucleation template layer, which substantially covers the substrate. Additional III-nitride semiconductor material can be deposited over this layer in subsequent HVPE process stages, leading to the formation of final and intermediate structures comprising III-nitride semiconductor material.
Another significant patent is focused on "Epitaxial methods and templates grown by the methods." This invention provides techniques for fabricating continuous layers of group III nitride semiconductor material with low defect densities. The methods involve nucleating and seeding on the upper portions of irregularly arranged pillars or islands of group III nitride material. The invention also includes template structures that feature a continuous layer of masking material, through which the upper portions of the pillars emerge.
Career Highlights
Ilsu Han has worked with prominent organizations such as Soitec and Arizona State University. His experience in these institutions has significantly contributed to his expertise in semiconductor technologies.
Collaborations
Some of his notable coworkers include Chantal Arena and Subhash Mahajan, who have collaborated with him on various projects in the semiconductor field.
Conclusion
Ilsu Han's innovative work in semiconductor technology, particularly in III-nitride materials, has led to significant advancements in the field. His patents reflect a deep understanding of the complexities involved in semiconductor fabrication and highlight his role as a key inventor in this area.