Solid State Lighting

AccuStrata’s solution for reducing the cost of Solid State Lighting (SSL) is by increasing the manufacturing yield of the MOCVD coating deposition on the sapphire, SiC or GaN substrates of which LEDs are made.  As of today only about 65-75% of the deposited substrate is utilized for usable LED and the remaining part is wasted due to coating non-uniformity or other reasons associated with the coating process. The waste inflates the LED cost and delays the broad acceptance of SSL in daily life.
AccuStrata’s control system monitors all substrates as they are deposited in the MOCVD reactor and calculates most important film parameters, their uniformity and their short- and long-term drifts. The control system issues messages to the process engineer when any of the following properties deviate from the specification as the coating is being deposited: