Patent ID: 8921207

Claim:
A CVD method for forming an epitaxial film comprising Sn on a substrate within a reaction chamber, the method comprising: providing a substrate disposed within a reaction chamber; and contacting an epitaxial surface of the substrate with a Sn precursor comprising: Sn(CH 3 ) 4-n X n , in which X═H, D, Cl or Br, and n= 0, 1, 2, or 3; Formula (I) ZSn(CH 3 ) 3-n X n , in which Z═H or D, X═Cl or Br, and n= 0, 1, or 2; or Formula (II) Z 2 Sn(CH 3 ) 2-n X n , in which Z═H or D, X═Cl or Br, and n= 0, or 1; Formula (III) and a second precursor comprising at least one of Si or Ge, thereby forming an epitaxial film comprising Sn.