Ji-Su Yu

Title: Ji-Su Yu: Innovator in Silicate Phosphor Technology

Introduction

Ji-Su Yu is a notable inventor based in Uijeongbu, South Korea. He has made significant contributions to the field of materials science, particularly in the development of silicate phosphors. His work has implications for lighting technology, enhancing the efficiency and stability of light-generating devices.

Latest Patents

Ji-Su Yu holds a patent for a silicate phosphor composition, which includes a method of manufacturing silicate phosphor and a light-generating device utilizing this phosphor. The patent describes a silicate phosphor composition characterized by a γ-phase of an orthorhombic crystal structure, represented by the chemical formula: CaMSiOCeN(0≤x≤0.5, 0≤y≤0.1, 0≤z≤0.15). In this formula, M represents various elements such as Mg, Sr, Ba, Zn, Na, Al, Ga, Ge, P, As, and Fe, while N includes elements like Eu, Mn, Tb, Yb, and Tm. This silicate phosphor exhibits maximum absorbance for wavelengths between 450 nm and 475 nm, which corresponds to blue excitation light, and demonstrates excellent stability at high temperatures. This innovation allows for the production of white light when used in conjunction with a blue light source.

Career Highlights

Throughout his career, Ji-Su Yu has worked with prominent organizations, including Samsung Display Co., Ltd. and the Pu-Lyong National University Industry-University Foundation. His experience in these institutions has contributed to his expertise in the field of phosphor technology and materials science.

Collaborations

Ji-Su Yu has collaborated with notable colleagues, including Myeong-ju Shin and Yun-Hyoung Park. These partnerships have facilitated advancements in his research and development efforts.

Conclusion

Ji-Su Yu's contributions to the field of silicate phosphors represent a significant advancement in lighting technology. His innovative work continues to influence the development of efficient light-generating devices.