Structural and vibrational characterization of hydrogenated carbon nitride thin films obtained by laser-induced CVD

Spectroscopic ellipsometry characterization of amorphous carbon and amorphous, graphitic and fullerene-like carbon nitride thin films

“…The resonance with the largest amplitude for three of the films (C2', G3, F2') and the third largest resonance for the a-CN x film (A2') is a feature in the range 1178-1308 cm -1 most often defined in literature as sp 3 C-N bonds or sp 3 C bonds [23][24][25][26][27][28]. For the nitrogen-containing films in this work, the resonance should instead be identified as a sp 2 C-N bond as established in earlier studies on the same type of films [10][11][12].…”

“…The resonances at 3388 (C5) [33], 3199 (A7") and 3187 (F6") [26,31,33] cm -1 for a-C, a-CN x and FL-CN x , respectively, may be associated with stretching and bending modes of O-H (3200-3400 cm -1 [33]) and N-H (3000-3300 cm -1 [33] or 3100-3450 cm -1 [26]) and indicate presence of hydrogen in the films. For the a-C and the FL-CN x films this vibration is rather weak, but in the spectrum of a-CN x this resonance is dominating which would mean there is a large amount of H in the film.…”

Composition and Bonding Properties of Carbon Nitride Films Grown by Electrochemical Deposition Using Acrylonitrile Liquid

“…Three features are found in the FTIR spectrum: a sharp absorption peak located at 2245 cm À1 corresponding to the CN bond, and two broad bands located at around 2900 and 3400 cm À1 , which correspond respectively to C-H and N-H species. [18][19][20] These results demonstrate the presence of hydrogen bonded to nitrogen in the films. The presence of the CN bond is also shown in the FTIR spectra.…”