Abstract
The effect of filler concentration (C ≈ 0–100 vol %) and film thickness (d ≈ 0.02, 0.2, 0.5, and 1.0 μm) on the optical absorption spectra and surface morphology of thin nanocomposite films based on poly(p-xylylene) and cadmium sulphide (PPX–CdS) has been studied. The PPX–CdS films are prepared by low-temperature vapor deposition polimerization on quartz and silicon substrates. A nonmonotonic dependence of the absorption spectrum red shift on the filler concentration is revealed. The red shift of the spectrum reaches a maximum at some critical concentration of the filler C0. It is observed that the value of the critical concentration C0 increases with the film thickness and equals C0 ≈ 11, 30, and 50 vol % for d ≈ 0.02, 0.5, and 1 μm, correspondingly. The average size of the nanoparticles is evaluated by an analysis of the absorption spectra (via estimating the exciton-peak wavelength). It is found that the shift in the absorption spectra is determined by a variation in the nanoparticle size. Atomic force microscopy reveals the effect of the filler content on the surface morphology of the polymer matrix in nanocomposite films and their surface roughness. The size distribution of the polymeric grains is evaluated. The most significant changes in the absorption spectra and surface morpology of the composites with a variation in the filler content are observed in the filler concentration range from 0 to C0. The absorption spectra of the composites with the filler concentration above C0 are similar, which can be attributed to the almost equal nanoparticle size in these nanocomposites. The correlation between changes in the matrix morphology and filler optical properties is established.
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References
S. N. Chvalun, A. V. Pebalk, E. I. Grigor’ev, V. I. Fel’dman, and T. S. Zhuravleva, “Development of creation bases of new optically active nanustructured polymer and composite materials,” Ross. Nanotekhnol. 3 (5–6), 51–54 (2008).
E. I. Grigor’ev, S. A. Zav’yalov, and S. N. Chvalun, “VDP—synthesis (vapor deposition polymerization) of poly (p-xylylene) / metal (semiconductor) nanocomposite materials for chemical sensors,” Ross. Nanotekhnol. 1 (1–2), 58–70 (2006).
A. V. Gusev, K. A. Mailyan, A. V. Pebalk, I. A. Ryzhikov, and S. N. Chvalun, “Prospects for the application of nanostructured polymer and nanocomposite films based on poly-p-xylylene for micro-, opto-, and nanoelectronics,” J. Commun. Technol. Electron. 54, 833 (2009).
L. I. Trakhtenberg, G. N. Gerasimov, and E. I. Grigor’ev, “Nanoclusters of metals and semiconductors in polymeric matrices: synthesis, structure, and physicochemical properties,” Russ. J. Phys. Chem. A 73, 209 (1999).
Yu. D. Tret’yakov and E. A. Gudilin, “Key trends in basic and application-oriented research on nanomaterials,” Russ. Chem. Rev. 78, 801 (2009).
I. V. Klimenko, E. P. Krinichnaya, T. S. Zhuravleva, S. A. Zav’yalov, E. I. Grigor’ev, I. A. Misurkin, S. V. Titov, and B. A. Loginov, “Polyparaxylylene-CdS nanocomposite films: optical spectra, photoluminescence, and surface topography,” Russ. J. Phys. Chem. A 80, 2041 (2006).
S. A. Zavyalov, E. I. Grigoriev, et al., “Structure and properties of titanium-polymer thin film nanocomposites,” Int. J. Nanosci. 4, 149–161 (2005).
D. R. Streltsov, K. A. Mailyan, A. V. Gusev, et al., “Electrical properties, structure, and surface morphology of poly(p-xylylene) silver nanocomposites synthesized by low-temperature vapor deposition polymerization,” Appl. Phys. A 110, 413–422 (2013).
S. A. Zavyalov, A. N. Pivkina, and J. Schoonman, “Formation and characterization of metal-polymer nanostructured composites,” Solid State Ionics 147, 415–419 (2002).
E. P. Krinichnaya, O. P. Ivanova, S. A. Zavyalov, E. I. Grigoriev, and T. S. Zhuravleva, “Synthesis of poly-p-xylylene + CdS nanocomposites and studing of their surface structure,” J. Surf. Invest.: X-ray, Synchrotron Neutron Tech. 6, 25 (2012).
L. Katsikas, A. Eychmuller, M. Giersig, and H. Weller, “Discrete excitonic transisions in quantum-sized CdS particles,” Chem. Phys. Lett. 172, 201–204 (1990).
R. N. Nurmukhametov, S. N. Dyadyushkina, K. A. Mailyan, et al., “On the nature of absorption and luminescence centers in poly-n-xylylene film,” Vysokomol. Soedin., Ser. A 33, 1525–1529 (1991).
G. S. Wu, X. Y. Yuan, T. Xie, G. C. Xu, L. D. Zhang, and Y. I. Zhuang, “A simple synthesis route to CdS nanomaterials with different morphologies by sonochemical reduction,” Mater. Lett. 58, 794–797 (2004).
S. A. Ozerin, “Synthesis, structure and properties of hybride nanocompositets based on silver, lead sulphide and poly-n-xylylene,” Ph. Dissertation (Enikolopov Inst. Synth. Polymer Mater., Moscow, 2005).
A. I. Ekimov and A. A. Onushchenko, “Dimensional quantization of the energy spectrum of electrons in semiconductor microcrystals,” JETP Lett. 40, 1136 (1984).
S. A. Zavyalov, A. A. Timofeev, A. N. Pivkina, and J. Schoonman, in Nanostructured Materials: Selected Synthesis Method. Properties and Applications, Ed. by P. Knauth and J. Schoonman (Kluwer Academic, Dordrecht, London, Boston, 2002), pp. 97–112.
T. Moss, G. Burrell, and B. Ellis, Semiconductor Opto-Electronics (Butterworth-Heinemann, Oxford, 2013).
T. Vossmeyer, L. Katsikas, M. Giersig, I. G. Popovic, et al., “CdS nanoclusters: synthesis, characterization, size dependent oscillator strength, temperature shift of the excitonic transition energy, and reversible absorbance shift,” J. Phys. Chem. 98, 7665–7673 (1994).
V. I. Roldugin, “Quantum-size colloid metal systems,” Russ. Chem. Rev. 69, 821 (2000).
R. F. Khairutdinov, “Chemistry of semiconductor nanoparticles,” Russ. Chem. Rev. 67, 109 (1998).
Y. Wang and N. Herron, “Nanometer-sized semiconductor clusters: materials synthesis, quantum size effects, and photophysical properties,” J. Phys. Chem. 95, 525–532 (1991).
A. P. Alivisatos, “Semiconductor clusters, nanocrystals, and quantum dots,” Science 271, 933–937 (1996).
S. A. Zav’yalov, I. Skhounman, E. N. Golubeva, A. V. Lobanov, A. N. Pivkina, and R. V. Gainutdinov, “Component cross effect and structure of thin-film nano-composites based on a poly-p-xylylene matrix,” Ross. Nanotekhnol. 2 (3–4), 101–108 (2007).
D. R. Streltsov, K. A. Mailyan, A. V. Gusev, et al., “Structure and optical properties of thin poly(pxylylene)∼ silver nanocomposite films prepared by lowtemperature vapor deposition polymerization,” Polymer 71, 60–69 (2015).
S. A. Ozerin, S. A. Zav’yalov, and S. N. Chvalun, “Synthesis, structure, and properties of metal–polymer nanocomposites based on silver and poly-p-xylylene,” Polymer Sci., Ser. A 43, 1171 (2001).
S. A. Ozerin, E. V. Kireeva, E. I. Grigor’ev, G. N. Gerasimov, and S. N. Chvalun, “Structure of nanocomposites based on lead sulfide and poly-p-xylylene,” Polymer Sci., Ser. A 49, 809 (2007).
S. A. Zav’yalov, L. Yu. Kupriyanov, A. N. Pivkina, and I. Skhounman, “The microstructure of and charge transfer in thin films based on metal-polymer nanocomposites,” Russ. J. Phys. Chem. A 80, 1461 (2006).
I. A. Boginskaya, A. V. Gusev, K. A. Mailyan, S. N. Ozerin, A. V. Pebalk, I. A. Ryzhikov, M. V. Sedova, and S. N. Chvalun, “Structure of and electric conduction in metal-polymer poly-para-xylylene–Ag nanocomposite films,” J. Commun. Technol. Electron. 56, 66 (2011).
A. S. Vorokh and A. A. Rempel’, “Disordered structure and shape of cadmium sulfide (CdS) nanoparticles,” Dokl. Akad. Nauk 413, 743–746 (2007).
A. S. Vorokh, N. S. Kozhevnikova, and A. A. Rempel, “Transition of the CdS disordered structure to the wurtzite structure with an increase in the nanoparticle size,” Bull. Russ. Acad. Sci.: Phys. 72, 1395 (2008).
N. S. Kozhevnikova, A. S. Vorokh, and A. A. Uritskaya, “Cadmium sulfide nanoparticles prepared by chemical bath deposition,” Russ. Chem. Rev. 84, 225 (2015).
P. V. Morozov, E. I. Grigor’ev, S. A. Zav’yalov, and S. N. Chvalun, “Rectification effect in poly-p-xylylene–cadmium sulfide graded nanocomposites,” Phys. Solid State 54, 2291 (2012).
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Original Russian Text © O.P. Ivanova, E.P. Krinichnaya, S.A. Zavyalov, T.S. Zhuravleva, 2017, published in Rossiiskie Nanotekhnologii, 2017, Vol. 12, Nos. 11–12.
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Ivanova, O.P., Krinichnaya, E.P., Zavyalov, S.A. et al. Effect of Filler Concentration and Film Thickness on Structure and Optical Properties of Poly(p-Xylylene)−Cadmium Sulphide Nanocomposites. Nanotechnol Russia 12, 627–634 (2017). https://doi.org/10.1134/S1995078017060052
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DOI: https://doi.org/10.1134/S1995078017060052