Yunxiang Zuo

Title: Innovations of Yunxiang Zuo in Solar Cell Manufacturing

Introduction

Yunxiang Zuo is a notable inventor based in Suzhou, China. He has made significant contributions to the field of solar cell manufacturing. His innovative approach focuses on improving the efficiency and cost-effectiveness of solar cells.

Latest Patents

Yunxiang Zuo holds a patent for a process of phosphorus diffusion for manufacturing solar cells. This invention discloses a method that involves annealing a mono-crystalline silicon wafer in a nitrogen atmosphere at temperatures between 900-950°C for twenty to thirty minutes. It also includes carrying out an oxidation treatment in a hydrogen chloride atmosphere at 850-1050°C to form a 10 to 30 nm thick oxide layer on the surface of the silicon wafer. The process further involves diffusing from a phosphorus source at 850-900°C until the block resistance of the material surface is controlled at 40 to 50 ohms, with a junction depth of 0.2 to 1.0 microns. Finally, the process concludes with annealing in a nitrogen atmosphere at 700-750°C for thirty to sixty minutes to complete the phosphorus diffusion. This invention allows the use of 4 N to 5 N mono-crystalline silicon as the material for manufacturing solar cells, enabling the use of lower purity materials such as metallurgical silicon, which significantly reduces material costs.

Career Highlights

Yunxiang Zuo is currently associated with Csi Cells Co., Ltd., where he continues to innovate in the field of solar technology. His work has been instrumental in advancing solar cell manufacturing processes.

Collaborations

Yunxiang Zuo collaborates with Lingjun Zhang, contributing to the development of innovative solutions in solar energy.

Conclusion

Yunxiang Zuo's contributions to solar cell manufacturing through his patented processes highlight his role as a key innovator in the field. His work not only enhances the efficiency of solar cells but also reduces production costs, making solar energy more accessible.