10-10/11 :: October/November 2010
© QLight Nanotech Ltd.
oday’s white LEDs are produced using blue LEDs with a phosphor coating. These suffer from two
problems: The LEDs emit a harsh and cold quality of light and a substantial amount of energy is wasted from the wide spectral emission that is produced but are not visible to the human eye. The unique semi- conductor nanocrystal technology of QLight Na- notech Ltd., a Yissum spin-off in Israel, solves both problems. The company develops Quantum Dots- semiconductor nanocrystals that display unique optical and electrical properties. Qlight’s nanocrystals enable light conversion from UV and blue wave- lengths to any other wavelength in the visible range. The color of the light is determined by the quantum dot’s size. Qlight’s technology tailors the spectrum to precisely to meet all the necessary requirements, and generates a “warm” yellowish light at high CRI (Color
Rendering Index) at a color temperature of 2700° K. Qlight’s solutions provide high absorbance in the UV\ blue wavelengths and an increase the red emission in order to provide a more natural “warm” white light.
In 2009, German Merck and the Yissum spin-off signed a research and development agreement for the joint development of a novel semiconductor na- no-particle technology for a novel display application invented by Professor Uri Banin from the Institute of Chemistry and the Center for Nanoscience and Nano- technology at the Hebrew University of Jerusalem.
Under the terms of the agreement, Merck will licen- se QLight Nanotech‘s semiconductor nanoparticle technology for optical applications and will sponsor an R&D program to be conducted by QLight Nano-