Heterocrystals for microelectronics
Abstract Arguments are given for the importance of heterocrystals in microelectronics. Heterocrystals are single crystals made up of two or more regions of different composition. They can be expected to find application in microelectronic functional blocks in the future, because (1) various useful solid-state phenomena have their optimum properties in different materials, (2) the hetero-junction between adjacent materials of a heterocrystal may have unique characteristics and (3) different materials grown together can provide combinations of bulk properties not attainable in a one-material crystal. This paper also reviews the small amount of research reported so far on heterocrystals of materials potentially useful in microelectronics and discusses problems anticipated in the further development of useful heterocrystals.