Published online by Cambridge University Press: 25 February 2011
Compounds of the type (L2MEL'2)x, where M and E are the group III and V elements, respectively, and L and L' are ligands which may be thermally eliminated are being studied as single source precursors to III-V semiconductors. An array of these compounds have been synthesized with various III-V combinations, and hydride and alkyl ligands. Film growth was studied over the temperature range of 450-600 °C and at 10−4 Torr. Growth rates of 1 μm/hr are typical when the compounds are maintained at 125-140 °C. (Me2Ga(μ-t-Bu2As) [2 led to films which were polygrained with the grains oriented in the (111) direction and retained the 1:1 stoichiometry of the precursor. Films from [Me2Ga(μ-i-Pr2As)]3 did not retain the 1:1 stoichiometry and did not show the preference for (111)- oriented growth.