INFRARED MATERIALS ACTIVITIES AT GEC-MARCONI-INFRARED-LIMITED .2. EPITAXIAL-GROWTH TECHNIQUES

This paper follows on from Part I (bulk growth techniques) which appea red in the previous issue of this Journal. The history and current sta tus of liquid phase epitaxy, LPE, and metal-organic vapour phase epita xy, MOVPE, processes are described in this paper. Epitaxial growth by LPE satisfies current requirements for large areas of uniform material for staring focal plane arrays (FPAs). Research work on MOVPE for the growth of heterostructures aimed at the next generation of IR detecto rs based on non-equilibrium operation is described.