Modulation of WN x/Ge Schottky barrier height by varying N composition of tungsten nitride*
Wei Jiang-Bina), Chi Xiao-Weia), Lu Chaoa), Wang Chena), Lin Guang-Yanga), Wu Huan-Daa), Huang Wei†a), Li Cheng‡a), Chen Song-Yana), Liu Chun-Lib)
       
XPS spectra of W 4f and N 1s for the WN x films prepared with different Ar/N2 flow rates. (a) W 4f, Ar : N2 = 50 : 18, (b) N 1s, Ar : N2 = 50 : 18, (c) W 4f, Ar : N2 = 50 : 25, (d) N 1s, Ar : N2 = 50 : 25, (e) W 4f, Ar : N2 = 50 : 35, (f) N 1s, Ar : N2 = 50 : 35.