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IJSTR >> Volume 4 - Issue 1, January 2015 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Optical Properties Of As-Deposited Amorphous Carbon Film Fromvarious Substrate Temperaturesvia Custom-Made-CVD

[Full Text]

 

AUTHOR(S)

A. Ishak, Ahmad Nurrizal Muhamad, M. Rusop

 

KEYWORDS

Keywords: Modified-CVD; As-deposited; DC bias; Non-doping

 

ABSTRACT

Abstract: We were deposited the as-deposited amorphous carbon via a modified custom-made-CVD in the range of 350oC to 550oC at atmospheric pressure with constant of negative bias -40V, and argon gas for 1 hour deposition. We used vaporized of palm oil as a carbon source into the chamber. It was observed, above 90% of light were transmitted to the samples instead of sample 500oC (80%). The as-deposited thin film grown on glass and p-type silicon we found uniform, smooth, dark grey colored and thickness in the range of 155 to 190nm. It was found, thickness less than 170nm brought less significant impact to the reduction of transmission percentage. In relationship with structural image in FESEM, the absorption coefficient was found high as the size of particles were big, rough, and agglomerated. The result showed the optical band gaps for 550oC to 350oC were 0.5eV, 1.3eV, 0.1eV 0.7eV, and 1.4eV respectively. The optical band gaps of 400oC and 350oC were suitable for solar cell applications.

 

REFERENCES

[1] P. Patsalas, Optical properties of amorphous carbon and their applications and perspectives in photonics, Thin Solid Films 519 (2011) 3990-3996.

[2] C. Godet, N.M.J Conway, J.E. Boureoe, K. Bouamra, A. Grosman, C. Ortega, Field-enhanced electrical transport mechanisms in amorphous carbon films, J. Appl. Phys. 91 (2002) 4154.

[3] A. Ishak, M. Rusop, Electrical Properties of Intrinsic Amorphous Carbon Films from Ethanol Precursor, International Journal of Scientific & Technology Research 3 (2014) 305-308.

[4] A. C. Ferrari, J. Robertson Interpretation of Raman Spectra disorded and Amorphous Carbon, Phys. Rev. B 61 (2000) 14095-14107

[5] A. Ishak, M. Rusop, P-type properties of micro and nano-structured carbon films from hydrocarbon palm oil in photovoltaic heterojunction solar cell applications, Journal of Electrical and Electronics Engineering (IOSR-JEEE) 9 (2014) 110-115.

[6] K.M.Krishna, M. Umeno, Y. Nukaya, T. soga, and T. Jimbo, Photovoltaic and spectral photoresponse characteristics of n-C/p-C solar cell on a p-silison substrate, Applied phys. Letters 77 (2000) 1472-1474.

[7] C. Corbell, M. Rubio-Roy, E. Bertran, J. L. Andujar, Plasma parameters of pulsed-dc discharge in methane used to deposit diamondlike carbon films, J. Applied Physics 106 (2009) 103302-10302-11.

[8] L. Shen, Y.Xu, F. meng, F. Li, S. Ruan, and W. Chen, Semitransparent polymer solar cells using V2O5/Ag/V2O5 as transparent anodes, Organic Electron 12 (2011) 1223.

[9] S. Adhikari, D. C. Ghimire, H. R. Aryal, S. Adhikary, H. Uchida, and M. Umeno, Boron-doped hydrogenated amorphous carbon films grown by surface-wave mode microwave plasma chemical vapor deposition, Diamond Related Materials 15 (2006) 1909.

[10] A. Ishak, K. Dayana, M. H. Mamat, M. F, Malek, and M. Rusop, “Deposition of Amorphous Carbon Film Using Natural Palm Oil by Bias Assisted Pyrolysis-CVD for Solar Cell Applications”, published in International Journal of Power and Renewable Energy Systems vol. 1 (2014) pp. 12-23.

[11] M. Rusop, A. M. M. Omer, S. Adhikari, S. Adhikary, H. Uchida, T. Soga, T. Jimbo, M. Umeno, Effects of annealing temperature on the optical, bonding, structural and electrical properties of nitrogenated amorphous carbon thin films grown by surface wave microwave plasma chemical vapor deposition, J. Materials Science 40 (2006) 242.

[12] A. M. M. Omer, S. Adhikari, S. Adhikary, H. Uchida, M. Umeno, Effects of iodine doping on optoelectronic properties of diamond-like carbon thin films deposited by microwave surface wave plasma CVD, Diamond Related Materials 13 (2004) 2136.

[13] K. M. Krishna, Y. Nukaya, T. Soga, T. Jimbo, and M. Umeno, Solar cells based carbon thin film, Sol. Energy Mater. Sol. Cells 65 (2001) 163.

[14] S. Adhikari, S. Adhikary, A. M. M. Omer, M. Rusop, H. Uchida, T. Soga, and M. Umeno, Preparation of diamond like carbon thin films above room temperature and their properties, Diamond Relat. Mater. 15 (2006) 188.

[15] G. Fanchini, S. C. Ray, and A. Tagliaferro, Density of electronic states in amorphous carbons, Diamond Related Mater. 12 (2003) 89.

[16] R. Gharbi, M. Fathallah, N. Alzaied, E. Tresso, and A. Tagliaferro, Hydrogen and nitrogen effects on optical and structural properties of amorphous carbon, Mater. Sci. Eng. C 28(2008) 795.

[17] M. Rusop, S. Adhikari, A. M. M. Omer, T. Soga, T. Jimbo, and M. Umeno, Effects of methane gas flow rate on the optoelectrical properties of nitrogenated carbon thin films grown by surface wave microwave plasma chemical vapor deposition Diamond Related Material 15 (2006) 37.

[18] Y. Hayashi, S. Ishikawa, T. Soga, M. Umeno, T. Jimbo, Photovoltaic characteristics of boron doped hydrogenated amorphous carbon on n-Si substrate prepared by r.f. plasma-enhanced CVD using trimethylboron, Diamond Relat. Mater. 12 (2003) 687.

[19] K. S. Han, J. H. shin, and H. Lee, Enhanced transmittance of glass plates for solar cells using nano-imprint lithography, Solar Energy Material Solar Cells 94 (2010) 583.

[20] S. Jung, D. Gong, and J. Yi, The effects of the band gap and defects in silicon nitride on the carrier lifetime and thetransmittance in c-Si solar cells, Solar Energy Material Solar Cells95 (2011) 546.

[21] D. Pradhan, M. Sharon, Opto-electrical properties of amorphous carbon thin film deposited from natural precursor camphor, Application Surface Science 253 (2007) 7004.

[22] J. Podder, M. Rusop, T. Soga,T. Jimbo, Boron doped amorphous carbon thin films grown by r.f. PECVD under different partial pressure, Diamond and Related Materials 14 1799-1804 (2005).

[23] M. Aono, T. Goto, N. Tamura, N. Kitazawa, Y. Watanabe, Photoconductivity study of amorphous carbon nitride films for opto-electronic devices, Diamond and Related Materials 20 (2011) 1208-1211.

[24] M. Aono, T. Goto, N. Tamura, N. Kitazawa, Y. Watanabe, Photoconductivity study of amorphous carbon nitride films for opto-electronic devices, Diamond and Related Materials 20 (2011) 1208-1211.

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

[26] J. Robertson, Diamond-like amorphous carbon, Mater. Sci. and Eng. R 37 (2002) 129.

[27] L.B. Zang, M.H. Tang, J.C. Li, Y.G. Xiao, Effect of applied bias voltage in tunnel junctions with ferroelectric barrier, Solid-State Electronics 68 (2012) 8-12.