Structural Transformation upon Nitrogen Doping of Ultrananocrystalline Diamond Films by Microwave Plasma CVD

Table 1

Spectral band assignment of CH_x stretching vibration modes of UNCD films at the center position, where minor peaks are shown in parenthesis.

Assignment in [13, 14, 16, 17]/(cm^−1)	Assignment in experiments
	N-doped UNCD films	Undoped UNCD films
sp^2-CH2(sym.)/2980	3004	(2988)
sp^2-CH2(asym.)/3080	3078	(3088)
sp^2-CH/3025	3039	(3033)
sp^3-CH/2900∼2920	(2902)	2895
sp^3-CH2(sym.)/2850	—	2861
sp^3-CH2(asym.)/2920	—	2923