Optical Properties of Polyvinyl Alcohol (PVA) / Silver Sulfide Polymer Composites

        
Dana A. Tahir, Soran M. Mamand, Sarkawt A. Hussein, Omed G. Abdullah, Shuja B. Aziz

Department of Physics, School of Science, Faculty of Science and Science Education, University of Sulaimani

DOI: https://doi.org/10.17656/jzs.10546

Abstract

In this work silver sulfide (Ag2S) has been synthesized inside the PVA polymer by in situchemical reduction method. The UV-Visible spectrophotometer was used to study the optical properties of the prepared composite samples. The absorption spectra reveal the influence of Ag2S particles on optical behavior of PVA. There is an increase in refractive index of the samples contains Ag2S filler, and exhibits a dispersion behavior. The extinction coefficients of the composite samples are higher than that of pure PVA. The linear relationship between the refractive index athigh wavelength region and Ag2Sconcentration was observed, indicating homogeneous dispersion ofthe filler in the PVA matrix.The absorption coefficient shifts to lower photon energy at higher Ag2S concentration, in which the optical band gap will reduce.


Key Words:

PVA polymer; silver sulfide; refractive index; absorption coefficient; optical band gap


References

[1]O.Gh. Abdullah, D.R. Saber, "Optical absorption of polyvinyl alcohol films doped with nickel chloride", Applied Mechanics and Materials Vol. 110-116, pp 177-182, (2012).

[2] B.O. Dabbousi, M.G. Bawendi, O. Onitsuka, M.F. Rubner, "Electroluminescence from CdSequantumdot/polymer composites", Appl. Phys. Lett. Vol. 66, pp 1316-1318, (1995).

[3] V.L. Colvin, M.C. Schlamp, A.P. Allvisatos, "Light-emitting diodes made from cadmium selenide nanocrystals and a semiconducting polymer", Nature 370, pp 354-357, (1994).

[4] I. Grozdanov, M. Najdoski, "Optical and Electrical Properties of Copper Sulfide Films of Variable Composition", Journal of Solid State Chemistry Vol.114, pp 469-475, (1995).

[5] S. Mizogami, H. Miyamoto, "Electrical and electromagnetic shielding properties of surface conducting polymer coated with CuxS thin layer", Synthetic Metals, Vol, 57, pp 3661-3664, (1993).

[6] R.V. Kumar, O. Palchik, Y. Koltypin, Y. Diamant, A. Gedanken, "Sonochemical synthesis and characterization of Ag2S/PVA and CuS/PVA nanocomposite", UltrasonicsSonochemistry Vol.9, pp 65-70, (2002).

[7] Xing-yuGuo, Shu-ying Cheng, Pei-min Lu, Hai-fang Zhou, "Preparation of Ag2S thin films by electro-deposition", Materials Science Forum, Vol. 663-665, pp 910-913, (2011).

[8] S.S. Dhumure, C.D. Lokhande, "Studies on the preparation and characterization of chemically deposited Ag2S films from an acidic bath", Thin Solid Films, Vol. 240, pp 1-6, (1994).

[9] B.R. Sankapal, R.S. Mane, C.D. Lokhande, "A new chemical method for the preparation of Ag2S thin films", Materials Chemistry and Physics, Vol.63, pp 226-229, (2000).

[10] I.A. Ezenwa, N.A. Okereke, N.J. Egwunyenga, "Optical properties of chemical bath deposited Ag2S thin films", International Journal of Science and Technology, Vol.2, pp 101-106, (2012).

[11] T.B. Nasrallah, H. Dlala, M. Amlouk, S. Belgacem, J.C. Bernede, "Some physical investigations on Ag2S thin films prepared by sequential thermal evaporation", Synthetic Metals, Vol. 151, pp 225-230, (2005).

[12] M.C. Brelle, J.Z. Zhang, "Femtosecond study of photo-induced electron dynamics in AgI and core/shell structured AgI/Ag2S and AgBr/Ag2S colloidal nanoparticles", Journal of Chemical Physics, Vol.108, pp 3119-3126, (1998).

[13] J.A. Munoz, C. Gomez, A. Ballester, M.L. Blazquez, F. Gonzalez, M. Figueroa, "Electrochemical behaviour of chalcopyrite in the presence of silver and Sulfolobus bacteria", Journal of Applied Electrochemistry, Vol. 28, pp 49-56, (1998).

[14] A.P. Yadav, R.R. Pradhanang, "Preparation and characterization of silver sulphide/silver iodide ion selective electrodes for the determination of I−

, S2− and Ag+ions", Journal of Nepal Chemical Society,Vol.15, pp 19-26, (1996).

[15] Y. Umezawa, P. Buhlmann, K. Umezawa, K. Tohda, S. Amemiya, "Potentiometric selectivity coefficients of ion-selective electrodes part I. Inorganic Cations", Pure and Applied Chemistry, Vol.72, pp 1851-2082, (2000).

[16] X.F. Qian, J. Yin, J.C. Huang, Y.F. Yang, X.X. Guo, Z.K. Zhu, "The preparation and characterization of PVA/Ag2S nanocomposite", Materials Chemistry and Physics Vol.68, pp 95-97, (2001).

[17] C. Wang, X. Zhang, X. Qian, W. Wang, Y. Qian, "Ultrafine powder of silver sulfide semiconductor prepared in alcohol solution",Materials Research Bulletin Vol.33, pp 1083-1086, (1998).

[18]O.Gh. Abdullah, S.B. Aziz, K.M. Omer, Y.M. Salih, "Reducing the optical band gap of polyvinyl alcohol (PVA) based nanocomposite", Journal of Materials Science: Materials in Electronics, Vol.26, pp 5303-5309, (2015).

[19]A.N. Ananth, S. Umapathy, J. Sophia, T. Mathavan, D. Mangalaraj, "On the optical and thermal properties of in situ/ex situ reduced Ag NP's/PVA composites and its role as a simple SPR-based protein sensor", Applied Nanoscience, Vol.1, pp 87-96, (2011).

[20] V. Pamukchieva, A. Szekeres, "Optical properties of GexSb20−xTe80 thin films and their changes by light illumination", Optical Materials Vol. 30, pp 1088-1092, (2008).

[21] O.Gh. Abdullah, S.A. Hussen, A. Alani, "Electrical characterization of polyvinyl alcohol films doped with sodium iodide", Asian Transactions on Science & Technology, Vol.1, pp 1-4, (2011).

[22]O.Gh. Abdullah, D.A. Tahir, K. Kadir, "Optical and structural investigation of synthesized PVA/PbSnanocomposites", Journal of Materials Science: Materials in Electronics, Vol. 26, pp 6939- 6944, (2015).

[23] O.W. Guirguis, M.T.H. Moselhey, "Optical study of poly(vinyl alcohol)/ hydroxypropyl methylcellulose blends", J Mater Sci Vol.64, pp 5775-5789, (2011).

[24] S.B. Aziz, H.M. Ahmed, A.M. Hussein, A.B. Fathulla, R.M. Wsw, R.T. Hussein, "Tuning the absorption of ultraviolet spectra and optical parameters of aluminum doped PVA based solid polymer composites", J. Mater. Sci. Mater. Electron. Vol. 26, pp 8022-8028, (2015).

[25] J. Jin, R. Qi, Y. Su, M. Tong, J. Zhu, "Preparation of high-refractive-index PMMA/TiO2 nanocomposites by one-step in situ solvothermal method", Iran. Polym. J. 22 (2013) 767-774.

[26] Y.Q. Rao, S. Chen, "Molecular composites comprising TiO2 and their optical properties", Macromolecules Vol.41, pp 4838-4844, (2008).

[27] S.B. Aziz, R.T. Abdulwahid, H.A. Rsaul, H.M. Ahmed, "In situ synthesis of CuS nanoparticle with a distinguishable SPR peak in NIR region", Journal of Materials Science: Materials in Electronics, (2016), DOI: 10.1007/s10854-016-4278-y

[28]J. Rozra, I. Saini, A. Sharma, N. Chandak, S. Aggarwal, R. Dhiman, P.K. Sharma, "Cu nanoparticles induced structural, optical and electrical modification in PVA", Materials Chemistry and Physics, Vol. 134, pp 1121-1126, (2012).

[29]E.A. Davis, N.F. Mott, "Conduction in non-crystalline systems V. Conductivity, optical absorption and photoconductivity in amorphous semiconductors", Philosophical Magazine Vol.22, pp 903-922, (1970).

[30] J. Tauc, "Amorphous and Liquid Semiconductors", Plenum Press, London and New York, (1974).

[31] F. Urbach, "The Long-Wavelength Edge of Photographic Sensitivity and of the Electronic Absorption of Solids", Journal of Physical Review, Vol.92, pp 627-636, (1953).

[32] S.F. Bdewi, O.Gh. Abdullah, B.K. Aziz, A.A.R. Mutar, "Synthesis, Structural and Optical Characterization of MgONanocrystalline Embedded in PVA Matrix", Journal of Inorganic and Organometallic Polymers and Materials, (2016), DOI: 10.1007/s10904-015-0321-3

[33] M.K. El-Mansy, E.M. Sheha, K.R. Patel, G.D. Sharm, "Characterization of PVA/CuI polymer composites as electron donor for photovoltaic application", Optik, Vol. 124, pp 1624-1631, (2013).