IN(X)GA(1-X)N GROWTH BY ION BEAM EPITAXY FOR VISIBLE AND UV LIGHT EMITTERS

A significant need exists for solid state blue and UV light emitters. These wavelengths are useful for high density optical data storage and for visible flat panel displays. We propose to meet this need with InGaN. In(x)Ga(1-x)N is a direct, wide band gap semiconductor (2 to 3.5 ev). Its director band gap makes visible (blue) and UV emitters, and UV solar bling sensors possible. The material is extremely hard and capable of being used at high temperature. We propose to demonstrate the growth of InGaN on sapphire and ZnO with a low energy ion source to create energetic nitrogen radicals. The tasks will include modification of an existing MBE system for a nitrogen ion source and a high temperature growth heater.