Weijie Zhang

Title: Weijie Zhang: Innovator in Photovoltaic Technology

Introduction

Weijie Zhang is a prominent inventor based in San Jose, California, known for his significant contributions to photovoltaic technology. With a total of seven patents to his name, Zhang has made remarkable advancements in the field of solar energy.

Latest Patents

Among his latest patents is the invention titled "Hexagonal phase epitaxial cadmium sulfide on copper indium gallium selenide for a photovoltaic junction." This patent describes a method of manufacturing a photovoltaic structure that includes forming a p-type semiconductor absorber layer containing a copper indium gallium selenide based material over a first electrode. It also involves forming an n-type cadmium sulfide layer over the p-type semiconductor absorber layer by sputtering in an ambient that includes hydrogen gas and oxygen gas, followed by the formation of a second electrode over the cadmium sulfide layer. Another notable patent is "Photovoltaic cell with high efficiency CIGS absorber layer with low minority carrier lifetime and method of making thereof." This solar cell contains a plurality of CIGS absorber sublayers, achieving a conversion efficiency of at least 13.4 percent and a minority carrier lifetime below 2 nanoseconds, with the sublayers potentially having different compositions.

Career Highlights

Weijie Zhang has worked with several notable companies throughout his career, including Novellus Systems Incorporated and Beijing Apollo Ding Rong Solar Technology Co., Ltd. His work in these organizations has contributed to the development of innovative technologies in the solar energy sector.

Collaborations

Zhang has collaborated with various professionals in his field, including colleagues such as Atiye Bayman and Vishal Gauri. These collaborations have further enhanced his research and development efforts in photovoltaic technology.

Conclusion

Weijie Zhang's contributions to the field of photovoltaic technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the advancement of solar energy solutions.