摘要:
Carbon nitride thin films have been synthesized on polycrystalline Pt substrates using microwave plasma chemical vapor deposition (MPCVD) technique. The N/C atomic ratio is close to the stoichiometric value 1.33 of C
3N
4. The experimental X-ray diffraction spectra contain all the strong peaks of
α-C
3N
4 and
β-C
3N
4. The films are a mixture of
α-C
3N
4 and
β-C
3N
4. The observed Raman and FT-IR spectra support the existence of C-N covalent bond in carbon nitride compound. The bulk modulus detected by Nano II nanoindentor is up to 349 GPa.