Optical Studies of Poly (N-Carbazole) (PVK) Blending with Polyvinylpyrrolidone (PVP) Using Tauc/Davis-Mott Model

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Abstract:

The optical absorption spectra of blended poly (N-carbazole) (PVK) with polyvinylpyrrolidone (PVP) in various compositions are investigated. A doctor blade technique was used to coat the blended polymer on a quartz substrate. The electronic parameters such as absorption edge (Ee), allowed direct band gap (Ed), allowed indirect band gap (Ei), Urbach edge (Eu) and steepness parameter (γ) were calculated using Tauc/Davis-Mott Model. The results reveal that the Ee, Ed and Ei increase with increasing of PVP ratio. There also have variation changing in Urbach energy and steepness parameter.

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Advanced Materials Research (Volumes 652-654)

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527-531

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January 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] L.M. Robeson: Polymer Blends, A Comprehensive Review (Carl Hanser Verlag, Munich, Switzerland 2007).

Google Scholar

[2] H.L. Chou, K.F. Lin, D.C. Wang: J. Polym. Res. Vol 13 (2005) p.79.

Google Scholar

[3] M.H. Cohen, H. Fritzsche, S. R. Ovshinsky: Phys. Rev. Lett. Vol 22, (1969) p.1065

Google Scholar

[4] E.A. Davis, N.F. Mott: Phil. Mag. Vol 22 (1970) p.903

Google Scholar

[5] H. Younes, D. Cohn: European Polym. J. Vol. 24 (1988) p.765

Google Scholar

[6] A. Karim, T. M. Slawecki, S. K. Kumar, J. F. Douglas, S. K. Satija, C. C. Han, T. P. Russell, Y. Liu, R. Overney, J. Sokolov, M. H. Rafailovich: Macromolecules Vol 31(1998) p.857

DOI: 10.1021/ma970687g

Google Scholar

[7] A. N. Alias, T.I.T Kudin , Z. M. Zabidi, M. K. Harun, M.Z.A. Yahya, Advanced Materials Research (2012) Vol 488-489 pp.628-632

DOI: 10.4028/www.scientific.net/amr.488-489.628

Google Scholar

[8] Z. M Elimat, A. M. Zihlif, G. Ragosta: Physica B. Vol 405(2010) p.3756

Google Scholar

[9] Y. Calgar, S. Ilican, M. Caglar: Eur. Phys. J. B Vol 58 (2007) p.251

Google Scholar

[10] N. A. Bakr, A.M. Funde, V.S. Waman, M.M Kamble, R.R. Hawaldar, D.P. Amalnerkar, S.W. Gosavi, S.R. Jadki: Pramana J. Phys. Vol 76 (2011) p.519

DOI: 10.1007/s12043-011-0024-4

Google Scholar

[11] F. Yakuphanoglu, M. Sekerci, A. Balaban: Optical Materials, Vol 27 (2005) p.1369

Google Scholar

[12] O. W. Guirguis, M.T. Moselhey: J. Mater Sci. Vol 46 (2011) p.5775

Google Scholar

[13] Y. A. Ramadin: Optical Materials Vol 14. (2000) p.287

Google Scholar

[14] F. Yakuphanoglu, M. Arslan: Optical Materials Vol 27 (2004) p.29

Google Scholar

[15] Calgar Y., Ilican S., Caglar M.: Eur. Phys. J. B Vol 58 (2007) p.251

Google Scholar

[16] J Tauc, A. Menth: Journal of Non-crystalline Solid Vol 8 (1972) p.569

Google Scholar