Optical properties of wide bandgap III-V nitride semiconductors

Applications of III-V nitride materials, such as GaN, AlN, InN and their alloys include blue-green light emitting devices, solar blind photodetectors, and high power/frequency electronics. A number of unique and potentially useful optical phenomena have been observed in high quality thin films and heterostructures of AlGaN, GaN, and InGaN. These include: (1) persistent optical effects such as optical metastability in bulk GaN crystals; (2) tunable emission from InGaN quantum wells, (MQW) and; (3) reconfigurable optical properties in InGaN-GaN heterostructures