Hiroshima University researchers have announced fabrication of a silicon quantum dot based hybrid inorganic/organic light-emitting diode (LED) that exhibits white-blue electroluminescence. The hybrid LED is expected to be a next-generation illumination device for producing flexible lighting and displays. The fabrication was done by Professor Ken-ichi Saitow at the Natural Science Center for Basic Research and […]

Scientists from Tohoku University in Japan have developed a new type of energy efficient flat light source based on carbon nanotubes. The new flat panel technology has a very low power consumption of around 0.1 Watt for every hour’s operation making them about a hundred times lower in energy consumption than an LED. With only […]

The Royal Swedish Academy of Sciences has decided to award the Nobel Physics Prize for 2014 for the invention of efficient blue light-emitting diodes which has enabled bright and energy-saving white light sources. The inventor recipients are Isamu Akasaki, of Meijo University in Nagoya and Nagoya University, Japan; Hiroshi Amano, of Nagoya University, Japan, and […]

Dr. Lai Yuk Ming, Dr. Loo Ka Hong and Prof. Michael Tse at the Hong Kong Polytechnic University Department of Electronic and Information Engineering have developed a high performance LED driver. The new driver powers LED lights with an innovative approach called “multi-level” PWM (Pulse-Width Modulation), which delivers remarkable improvements in terms of light quality […]

Rensselaer Polytechnic Institute researchers have identified the mechanism behind a plague of LED light bulbs.  The problem is called “efficiency droop” that causes LEDs to lose up to 20 percent of their efficiency as they are subjected to greater electrical currents. Efficiency droop, first reported in 1999, has been a key obstacle in the development […]

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