Yumi Na

Title: Yumi Na - Innovator in Silicate Phosphor Technology

Introduction

Yumi Na is a prominent inventor based in Gyeongsangbuk-do, South Korea. She has made significant contributions to the field of materials science, particularly in the development of silicate phosphors. Her innovative work has implications for various applications, including LED technology.

Latest Patents

Yumi Na holds a patent for a "Method for preparing silicate phosphor and the silicate phosphor." This patent describes a method that includes a hydrothermal treatment step to obtain a layered silicate substituted with a rare-earth metal. The process involves treating an aqueous solution containing rare-earth metal ions, NaOH, and silica. Following this, a calcinating step is performed to form a crystalline silicate. The resulting silicate phosphors exhibit high covalent character, luminescent intensity, and stability at elevated temperatures. They can selectively emit red, green, or blue light due to the substitution of silicon positions with various rare-earth metals. This method offers a simplified and economical approach to producing high-quality phosphors for LEDs.

Career Highlights

Yumi Na is affiliated with the Korea Institute of Science and Technology, where she continues to advance her research in materials science. Her work has garnered attention for its potential to enhance the efficiency and performance of lighting technologies.

Collaborations

Yumi Na collaborates with esteemed colleagues, including Sunjin Kim and Kyoungja Woo. Their combined expertise contributes to the innovative research being conducted at their institution.

Conclusion

Yumi Na's contributions to the field of silicate phosphors represent a significant advancement in materials science. Her patented method not only simplifies the production process but also enhances the performance of phosphors used in LED technology.