Sudhir Kumar

Title: Sudhir Kumar: Innovator in OLED Technology

Introduction

Sudhir Kumar is a prominent inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of organic light-emitting diodes (OLEDs) with his innovative patents. His work focuses on developing advanced light-emitting materials that enhance the efficiency and performance of OLED technology.

Latest Patents

Sudhir Kumar holds two notable patents. The first patent is for an electro-fluorescent emitter designed for ultra-violet OLEDs. This invention features a newly synthesized carbazole scaffold-based emitter, 9-butyl-2,7-(2-(4-methoxyphenyl)ethynyl)-9H-carbazole (Cz(APhOMe)). It demonstrates a high quantum yield of approximately 78%. When doped into a host light-emitting layer of an OLED, Cz(APhOMe) emits pure UV light with a single peak wavelength in its emission spectrum. This pure UV light has numerous applications, including biological sensors, chemical sensors, and forensic investigations.

The second patent involves a novel light-emitting material that is a blue fluorescent substance with a high quantum yield of around 86%. This material can be incorporated into a host light-emitting layer of an OLED to improve external quantum efficiency, power efficiency, and current efficiency. Experimental results indicate that this material emits deep blue light with CIE coordinates of (0.156, 0.055). Additionally, it can be produced through both dry and wet processes, facilitating low-cost mass production of OLEDs.

Career Highlights

Sudhir Kumar is affiliated with Tsinghua University, where he continues to advance research in OLED technology. His innovative work has positioned him as a key figure in the development of efficient light-emitting materials.

Collaborations

Sudhir Kumar collaborates with notable colleagues, including Jwo-Huei Jou and Justin Thomas Koil Pitchai Rajapandian. Their combined expertise contributes to the advancement of OLED technology and its applications.

Conclusion

Sudhir Kumar's contributions to OLED technology through his innovative patents highlight his role as a leading inventor in the field. His work not only enhances the efficiency of OLEDs but also opens up new possibilities for various applications.