Company Filing History:
Years Active: 2021
Title: Cheng Zhang: Innovator in Gallium Nitride Technology
Introduction
Cheng Zhang is a prominent inventor based in New Haven, CT (US). He has made significant contributions to the field of gallium nitride (GaN) technology, holding 2 patents that focus on advanced methods for creating high-performance optical devices.
Latest Patents
One of his latest patents is a "Method for GaN vertical microcavity surface emitting laser (VCSEL)." This patent describes structures and methods for forming highly uniform and high-porosity gallium-nitride layers with sub-100-nm pore sizes. The process involves electrochemical etching of heavily-doped gallium nitride at low bias voltages in concentrated nitric acid, which is used to create porous gallium nitride layers. These layers can be utilized in reflective structures for integrated optical devices such as VCSELs and LEDs.
Another notable patent is the "Method to make buried, highly conductive p-type III-nitride layers." This invention allows for the formation of a conductive, porous gallium-nitride layer as an active layer in a multilayer structure. This layer is positioned adjacent to one or more p-type III-nitride layers, which may be buried within a multilayer stack of an integrated device. The annealing process described in this patent helps to reduce layer resistance and improve device performance by releasing and removing neutralizing species from the p-type layers.
Career Highlights
Cheng Zhang is affiliated with Yale University, where he continues to advance research in the field of gallium nitride technology. His work has garnered attention for its innovative approaches to enhancing the performance of optical devices.
Collaborations
Cheng collaborates with notable colleagues such as Jung Han and Yufeng Li, contributing to a dynamic research environment that fosters innovation and discovery.
Conclusion
Cheng Zhang's contributions to gallium nitride technology through his patents and research at Yale University highlight his role as a leading inventor in the field. His innovative methods are paving the way for advancements in integrated optical devices.