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Influence of Dip Cycles on the Structural, Optical and Morphological Properties of CdS-SILAR Deposited Thin Films

Kester O. Ighodalo, Tochukwu M. Emeakaroha, Blessing N. Ezealigo, Kenneth Iloure

Abstract


Cadmium sulphide (CdS) thin films weredeposited on a glass substrate by a relatively simple and cost effective successive ionic layer adsorption and reaction (SILAR) method at temperature 80ºC at different deposition cycles. For a fine nanocrystalline thin film growth, the parameters include concentrations of cationic and ionic precursors, number of immersion cycles, and the immersion time. A study was made to know how dip cycles affects the structural, surface morphological and optical properties of the film using X-ray diffraction (XRD), EDAX, scanning electron microscopy (SEM) and UV-VIS (ultraviolet visible) spectrophotometer. The deposited CdS thin films were found to be greenockite αCdS film with a strong preferred orientation along the (002) plane exhibit hexagonal phase with optical band gaps between 2.38 and 2.70eV.The band gap with a valueto a certain extent larger than thedistinctive value of the bulk CdS (2.42 eV), can be ascribed to quantum confinement effects due to the nanometer crystallite size of the CdS thin films.

Keywords


Thin films,SILAR, SEM, XRD, UV-VIS

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References


Peng XG, Manna L, Yang WD, et al. Shape control of CdSe nanocrystals.Nature. 2000; 404(6773); 59-61p.

Bhattacharya R, Saha, S. Growth of CdS nanoparticles by chemical method and its characterization.Parmana J.Phys 71(1) 187–192p.

Mahdi MA,KasemSJ,HassenJJ, et al. Structural and optical properties of chemical deposition CdS thin films.Int. J. Nanoelectronics and Materials.2009; 2, 163-172p.

Selma MH, Al-Jawad, Ali M,MousaWessalAeadTaha.Investigation of optical properties of cadmium sulfide (CdS) thin films by chemical bath deposition. Um-Salama Sci J. 2009; 6 (1): 150–162p.

Ghenescu M, Ion L, EnculescuI, et al. Electrical properties of electrodeposited CdS nanowires. Physica E: Low-dimensional systems and Nanostructures.2007; 40/7: 2485–2488p.

Mo D, Liu J, Yao HJ, et al. Preparation and Characterization of CdS Nanotubes and Nanowires by Electrochemical Synthesis in Ion-track Templates. J Cryst Growth.2008; 310: 612p.

Ezema FI, Ezugwu SC, Osuji RU, et al. Role of thermal annealing on the optical and solid state properties of chemically deposited cadmium sulphide nanocrystalline thin film grown in a polymer matrix. J Non-Oxide Glasses. 2010; 1(1): 45–50p.

Li C, Liu Z, Yang Y. The selective synthesis of single-crystalline CdS nanobelts and nanowires by thermal evaporation at lower temperature. Nanotechnology. 2006; 17: 1851–1857p.

Abdi A, Titova LV, Smith LM, et al. Resonant Raman scattering from CdS nanowires. Appl Phys Lett. 2006; 88: 43118p.

Kar S, Chaudhuri S. Shape Selective Growth of CdS One-Dimensional Nanostructures by a Thermal Evaporation Process. J PhysChem B. 2006; 110(10): 4542–4547p.

Acharya KP, Mahalingam K, Ullrich B. Structural, compositional, and optoelectronic properties of thin-film CdS on p-GaAs prepared by pulsed-laser deposition. Thin Solid Films. 2010; 518(7) 1784–1787p.

IkhmayiesSJ, Ahmad-Bitar RN. The influence of the substrate temperature on the photovoltaic properties of spray-deposited CdS: In thin films.Appl Surf Sci. 2010; 256(11): 3541–3545p.

Demir R, Gode F. Structural, Optical and Electrical Properties of Nanocrystalline CdS Thin Films Grown by Chemical Bath deposition method. Chalcogenide Lett. 2015; 12(2): 43–50p.

Moualkia H, Hariech S, Aida M. Structural and optical properties of CdS thin films grown by chemical bath deposition. Thin Solid Films.2009; 518(4): 1259p.

Enriquez JP, Mathew X. Influence of the thickness on structural, optical and electrical properties of chemical bath deposited CdS thin films. Sol Energy Mat Sol Cells. 2003; 76: 313–322p.

Manikandan K, Mani P, Fermi Hilbert Inbaraj P, et al. Influence of molar concentration on structural, morphological and optical properties of CdS thin films obtained by SILAR method. Indian J Pure Appl Phys. 2014; 52: 354–359p

Lokhande C.D, Sankapal B.R, Pathan H.M et al. some structural studies on successive ionic layer adsorption and reaction (SILAR)-deposited CdS thin films. Appl Surf Sci. 2001; 181: 277–282p.

Garadkar K.M, Patil A.A, Korake P.V et al. Characterization of CdS thin films synthesized by SILAR method at room temperature.Scholars Research Library.Arch Appl Sci Res. 2010; 2(5): 429–437p.

Dipalee JD, Shaeed S, Farha S. Arindam G. et al. Effect of annealing on structural and optoelectronic properties of CdS thin film by SILAR method. Res LibAdv Appl Sci Res. 2011; 2(4): 417–425p.

Jadhav UM, Shinde MS, Patel SN, et al. Structural, optical and electrical properties of nanocrystalline cadmium sulphide thin films deposited by novel chemical route.Indian J PureAppl Phys. 2014; 52: 39–43p.

Fajinmi GR, AdelabuJSA. Preparation and Characterization of Chemically Deposited Cadmium Sulphide Thin Films. Pacific JSci Technol. 2009; 10(2): 817–822p.

Tauc J. Amorphous and Liquid Semiconductors, edited by J Tauc.New York:Plenum Press; 1974.

Liu F, Lai Y, Liu J et al. Characterization of chemical bath deposited CdS thin films at different deposition temperature. J. Alloy Compd. 2010; 493: 305–308p.

Guzeldir B, Saglam M, Ates A. Deposition and characterization of CdS, CuS and ZnS thin films deposited by SILAR method. Acta Physica Polonica A. 2012; 121(1): 33–35p.

Garadkar K. M., Patil A. A., Korake P.V. et al. Characterization of CdS thin films synthesized by SILAR method at room temperature. Archives of Applied Science Research.2010; 5(2); 429–437p

Mukherjee A,Satpati B. Bhattacharyya, S.R et al. Synthesis of nanocrystalline CdS thin film by SILAR and their characterization Physica E.2015;65; 51–55p.


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