HETERO-EPITAXIAL GROWTH OF ORGANIC SEMICONDUCTORS

NEW ORGANIC CONDUCTORS AND SEMICONDUCTORS ARE CURRENTLY BEING SYNTHESIZED CHEMICALLY BASED UPON THE METAL PHTHALOCYANINES. IN THIS WORK THE POSSIBILITY OF GROWING THESE NEW ORGANIC SEMICONDUCTOR MATERIALS IN THIN FILM FORM BY A MOLECULAR BEAM EPITAXY METHOD IS EXAMINED. THE MATERIALS ARE DEPOSITED ON CONTROLLED SUBSTRATES BY AN ULTRA-HIGH VACUUM MOLECULAR BEAM EPITAXY APPROACH TO ENHANCE FILM GROWTH IN A PLANAR STACKED RING MOLECULAR ORIENTATION THAT IS EXPECTED TO GIVE IMPROVED ELECTRICAL PROPERTIES OVER THE BULK CRYSTALLINE MATERIAL. THIS FORM OFFILM GROWTH WILL PROVIDE A MEANS OF MODULATING OR DOPING THE FILM TO PRODUCE ELECTRONIC DEVICE STRUCTURES IN THIS THIN FILM ORGANIC SEMICONDUCTOR MATERIAL. SUBSTRATE AND DEPOSITION PARAMETERS ARE EXAMINED.