Patent ID: 6461581
Filing Date: 2002-10-08
Classification: C01B,H01L,Y02P

Abstract:
A clathrate compound comprising a clathrate lattice with atoms of at least one element selected from the group consisting of silicon and carbon as a main structure, doping atoms which are encapsulated within lattice spacings of said clathrate lattice, and substitution atoms which are substituted for at least one portion of atoms which make up said clathrate lattice, wherein said clathrate lattice is one clathrate selected from the group consisting of:i) a silicon clathrate 46 (Si46) mixed lattice of a Si20 cluster comprising a dodecahedron of Si atoms and a Si24 cluster comprising a tetradecahedron of Si atoms; ii) a silicon clathrate 34 (Si34) mixed lattice of a Si20 cluster comprising a dodecahedron of Si atoms, and a Si28 cluster comprising a hexadecahedron of Si atoms; iii) a carbon clathrate 46 (C46) mixed lattice of a C20 cluster comprising a dodecahedron of C atoms, and a C24 cluster comprising a tetradecahedron of C atoms; and iv) a carbon clathrate 34 (C34) mixed lattice of a C20 cluster comprising a dodecahedron of C atoms, and a C28 cluster comprising a hexadecahedron of C atoms; said doping atoms are atoms of at least one element selected from the group consisting of Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Ra, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ac, Th, Pa, U, Cu, Ag, Au, Zn, Cd, Hg, B, Al, Ga, In, Tl, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, and Pt; and and said substitution atoms are atoms of at least one element selected from the group consisting of Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Ra, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb, Lu, Ac, Th, Pa, U, Cu, Ag, Au, Zn, Cd, Hg, B, Al, Ga, In, Tl, V, Nb, Ta, Cr, Mo, W, Mn, Re, N, P, As, Sb, Bi, O, S, Se, Te, Po, F, Cl, Br, I, At, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, and Pt.