| abstract |
According to one embodiment of the invention, the precursor composition comprises at least one compound selected from organic germanium compounds and at least one mixture selected from organic group 4 compounds. The organic germanium compound may be represented by the following <Formula 1>. <Formula 1> In Formula 1, L ″ 1 , L ″ 2 , L ″ 3 and L ″ 4 each independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a dialkylamine group having 1 to 6 carbon atoms, and a 6 to 10 carbon atom. An aryl group, an arylamine group having 6 to 12 carbon atoms, an aralkyl group having 7 to 13 carbon atoms, an aralkylamine group having 7 to 13 carbon atoms, an alkylaryl group having 7 to 13 carbon atoms, or an alkylarylamine group having 7 to 13 carbon atoms do. |