Saphlux Lead Scientist Dr. Jie Song Gives Invited Talk at Photonics West
On February 6th, 2020, the six-day Photonics West Exhibition, held by the Society of Photo-Optical Instrumentation Engineers (SPIE) in San Francisco, came to an end. Founded in 1955, SPIE is an international not-for-profit professional organization that advances the development of light-based technologies. So far, it has provided support and service to more than 255,000 constituents from 183 countries through interdisciplinary information exchange, continuing education, publications, patent precedent, and career and professional growth. The SPIE Digital Library is the world’s largest collection of optics and photonics publications, which covers biomedicine, communications, sensors, electronics, energy, imaging and more.
The Photonics West Exhibition, held by SPIE, is one of the world’s leading exhibitions for the optics and photonics industry. It provides opportunities and platforms for over 1,300 exhibiting companies to showcase their latest technologies and products, share information about scientific research, and develop relationships with each other. Additionally, researchers and scientists from all over the world are invited to deliver over 5,000 presentations, covering a wide range of topics including biomedical optics, bio-photonics, industrial lasers, optoelectronics, microfabrication, MOEMS-MEMS, and displays.
At the Photonics West Conference, Dr. Song, the Lead Scientist from Saphlux, was invited to deliver a speech, presenting a novel application of nanoporous GaN in the field of Micro-LEDs. Micro-LED is an emerging flat panel display technology. Micro-LED displays consist of arrays of microscopic LEDs forming the individual pixel elements. Compared with widespread OLED and LCD technology, Micro-LED displays offer better contrast, response times, energy efficiency, and service life. Micro-LED can be widely used in applications including TVs, mobile phones, AR/VR, smartwatches, HUD and so on. It will be the core material for future displays, leading a new revolution in display industry.
During his presentation, Dr. Song introduced Saphlux’s innovative NPQD technology, which can provide color conversion solutions for manufacturers who are developing Micro-LED displays. NPQD™ stands for “Nanopores for Quantum Dots.” Nanopores are an innovative nano structure formed inside LEDs and are a natural vessel for quantum dots. Because of its strong internal light scattering effect, the effective path of light traveling inside nanopores can be greatly extended to boost the conversion efficiency of quantum dots. By loading green and red QDs inside nanoporous GaN, the Saphlux team achieved the absorption of (blue) pumping light of 95% and the light conversion efficiency of 93%, fabricating full-color monolithic micro-LED with the size of each micro-LED matrix of 35 µm.