ZnO was deposited by using diethyl-zinc (DEZ), diborane (B2H6)andwater(H2O) as precursor gases. If not mentioned differently, the LPCVD hot plate temperature was set to 180 °C, the H2O/DEZ precursor ratio was set to 1.22; and the process pressure to 0.5 mbar (50 Pa) for layer deposition [17].