Patent ID: 7351993

Claim:
A field effect transistor, comprising: at least a first and second dielectric layers, wherein at least one of the layers comprises a material of composition [Z] u [RE1] v [RE2] w [RE3] x [J1] y [J2] z wherein [RE] is chosen from a group comprising Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb) and Luthium (Lu), [Z] is chosen from a group comprising silicon, germanium and SiGe mixtures, [J1] and [J2] are chosen from a group comprising Oxygen (O), Nitrogen (N), and Phosphorus(P),and 0≦u, v, w, z≦5;0<x, y5; and at least a first semiconductor layer such that at least one semiconductor layer is positioned between the first and second dielectric layers such that at least one dielectric layer and one semiconductor layer are single crystal.