Eighteen technological innovations developed by CUHK were shown in the China Hi-Tech Fair, including the green project named ‘Rational Design of Plasmonic Crystals to Increase the Efficiency of Light-Emitting Diodes (LEDs)’ led by Prof. Daniel Hock-chun Ong from the Department of Physics at CUHK. The project has greatly contributed to energy saving and emission reduction, as well as advancing TV and display screen technology. Professor Ong invented a means to ‘attach’ plasmonic crystals on LED to increase luminosity. Testing showed the LED capped with plasmonic crystals is four times brighter than those without treatment. This is a new and promising way to improve the efficiency of LED lamps, leading to a greener environment and advancement in the LED illumination industry.

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