Developed at the National Institute of Advanced Industrial Science and Technology in Japan, which is the largest public research organisation in the country, the lighting intensity of the new product will not lessen at high operating temperatures, which could make it ideal for high-power applications.
It can also function well at current densities of up to 2000 A/cm², increasing its light emission intensity at operating temperatures of up to 420 C.
Based on a diamond semiconductor over a 2 mm² diamond substrate, it emits light due to the generation of stable excitons that do not break down below 600 C.
However, despite it potential value in a variety of applications, the LED cannot currently be mass-manufactured due to the high cost of diamond.
The engineers are therefore developing a way of producing diamond LEDs more economically.
