The invention includes SOI thin film transistor constructions, memory devices, computer systems, and methods of forming various structures, devices and systems. The structures typically comprise a thin crystalline layer of silicon/germanium formed over a wide range of suitable substrates. The crystalline...http://www.google.de/patents/US7229865?utm_source=gb-gplus-sharePatent US7229865 - Methods of making semiconductor-on-insulator thin film transistor constructions