GaN LEDs: Sputtering Cuts Costs on Larger Displays

A team of University of Tokyo researchers in Japan has developed a technology for creating GaN LEDs on glass substrate, which could not only cut manufacturing costs but also help to develop OLED light panels. The researchers use a sputtering method to transcribe the GaN LEDs onto the glass substrate. The team has not yet measured luminous efficiency or external quantum efficiency for any single color but is currently testing the efficiency of the internal quantum at low temperatures.