Patent ID: 8624049

Claim:
A method of making a dopant group-substituted (cyclo)silane, comprising: reacting a (cyclo)silane of the formula A n H y with an alkali metal and a dopant group precursor of the formula DR 1 3 or DR 1 3−m X m to form a dopant group-substituted (cyclo)silane compound, where n is an integer from 3 to 12, y is an even integer of from n to 2n+2, in is an integer from 1 to 3, each of the n instances of A is independently Si or Ge, D is Sb, As, P or B, each of the (3−m) instances of R 1 is independently H, alkyl, aryl, aralkyl, or AR 2 3 (where R 2 is hydrogen, alkyl, aryl, aralkyl, or A p H 2p+1 , 1≦p≦4), and each of the instances of X is independently a halogen; and b) purifying and/or isolating the dopant group-substituted (cyclo)silane compound.