EFFECT OF C-C BONDS POLARIZATION ON SP2 CLUSTERS SIZE IN A-CNX THIN FILMS

Kamal  Kayed

Authors

Kamal Kayed Department of physics, Faculty of Science, Damascus University, Syria.

Keywords:

Carbon nitride, laser deposition, X-ray photo-electron spectroscopy, charge effect

Abstract

In this paper we show that, in a-CNx thin films, the nonlinear relationship between the charge effect resulted during XPS surface analysis and the C(sp3)-N bonds concentration is a direct result of the C-C bonds polarization. We found that the charge effect coefficient relates to both the number of C(sp3)-N bonds and the number of dipoles resulting from C-C bonds polarization. In addition, the results showed that the C-C bonds polarization is the main reason for the clustering processes.

References

Abdullahi, Y.Z., Yoon, T.L., Halim, M.M., R. Hashim, M., and Lim, T.L. (2016). Mechanical and electronic properties of graphitic carbon nitride sheet: First-principles calculations. Solid State Commu., 248:144-150.

Alkhawwam, A., Abdallaha, B., Kayed, K., and Alshoufi, K. (2011). Effect of nitrogen plasma afterglow on amorphous carbon nitride thin films deposited by laser ablation. Acta Phys. Pol. A., 120:545-551.

Alkhawwam, A., Jama, C., Goudmand, P., Dessaux, O., El Achari, A.M Dhamelincourt, P., and Patrat, G. (2002). Thin Solid Films., 408:15-25.

Aono, M., Takeno, T., and Takagi, T. (2016). Structural, electrical, and optical properties of amorphouscarbon nitride films prepared using a hybrid deposition technique. Diam. Relat. Mater., 63:120-124.

Hayashi, Y., Yu, G., Rahman, M.M., Krishna, K.M., Soga, T., Jimbo, T., and Umeno, M. (2001) Spectroscopic properties of nitrogen doped hydrogenated amorphous carbon films grown by radio frequency plasma-enhanced chemical vapor deposition. J. Appl. Phys., 89:7,924-7,931.

Hellgren, N., Haasch, R., Schmidt, S., Hultman, L., and Petrov, I. (2016). Interpretation of X-ray photoelectron spectra of carbon-nitride thin films: new insights from in situ XPS. Carbon 108:242–252.

Kayed, K. (2010). Synthesis and Properties of Carbon Nitride and Boron Nitride Thin Films Prepared by Different Techniques, [Ph.D. thesis]. Damascus, Syria: Damascus University, 156p.

Kayed, K. (2018). Effect of nitrogen plasma afterglow on the (1,000-1,800) cm-1 band in FT-IR spectra of amorphous carbon nitride thin films. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy., 190:253-258.

Kayed, K. (2018). Effect of nitrogen plasma afterglow on the surface charge effect resulted during XPS surface analysis of amorphous carbon nitride thin films. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy., 199: 242-247.

Kayed, K. (2019). The influence of nitrogen pressure on the structure of a-cnx thin films prepared by pld method. Int. J. Nanoelectron. Mater., 12:19-24.

Kayed, K. (2019). The optical band gap in amorphous carbon nitride thin films: Effect of sp2 hybridized C atoms configurations. Fullerenes, Nanotubes and Carbon Nanostructures., 27:796–802.

Lejeune, M., Durand Drouhin, O., Zellama, K., and Benlahsen, M. (2001). Structure and optical properties of carbon nitride films deposited by magnetron sputtering. Solid State Commun., 120:337-342.

Neuville, S. (2014). Carbon structure analysis with differentiated Raman spectroscopy. Lambert Academic Press, CUISY, Paris: 169p.

Neuville, S. (2019). Selective Carbon Material Engineering for Improved EMS and NEMS. Micromachines., 10:539-581.

Rodil, S.E., Ferrari, A.C., Robertson, J., and Milne, W.L. (2001). Raman and infrared modes of hydrogenated amorphous carbon nitride. J. Appl. Phys., 89:5,425-5,430.

Rodil, S.E., Muhl, S., Maca, S., and Ferrari, A.C. (2003). Optical gap in carbon nitride films. Thin Solid Films., 433:119-125.