Electrodeposited CuInS2 Using Dodecylbenzene Sulphonic Acid As a Suspending Agent for Thin Film Solar Cell

CulnS2 thin films were electrochemically deposited onto fluoride-doped tin oxide (FTO) substrate in presence of dodecylbenzene sulphonic acid to adjust pH of the solution and as a suspending agent for the sulfur. Cyclic voltammetry and chronoamperometry were carried out to determine the optimum pH. The composition, crystallinity, and optical properties of the compounds synthesized were studied by energy dispersive X-ray (EDX), X-ray diffraction, and UV-Visible spectra. It was found that the increasing of pH shifts the electrodeposited voltage toward more negative and lowers the deposition current. It was concluded that CuInS2 with atomic stoichiometric ratio was prepared at pH equal to 1.5 and 150 ml of 0.1 M sodium thiosulphate, 5 ml of 0.1 M indium chloride, and 5 ml of 0.1 M cupper chloride. The energy gaps were calculated to be 1.95 and 2.2 eV for CuInS2 prepared at 1.5 and 2.5 of pH, respectively. It was found that 𝐽sc, 𝑉oc, and 𝜂 are 1.02×10−4 A/cm2, 0.52 V, and 1.3×10−2%, respectively, for FTO/CuInS2/ZnO/FTO heterojunction solar cell.

[1]  L. Arriaga,et al.  Preparation and characterization of Cu–In–S thin films by electrodeposition , 2006 .

[2]  T. Kitamura,et al.  Deposition of polyaniline via molecular self-assembly on TiO2 and its uses as a sensitiser in solid-state solar cells , 2004 .

[3]  A. Yamamoto,et al.  Preparation of CuInS2 films with sufficient sulfur content and excellent morphology by one-step electrodeposition , 1997 .

[4]  K. Koumoto,et al.  Electrodeposition of CuInS2 from aqueous solution Part I. Electrodeposition of CuS film , 1996 .

[5]  T. T. John,et al.  CuInS2 films using repeated chemical spray pyrolysis , 2005 .

[6]  K. Vijayakumar,et al.  Study of trap levels by electrical techniques in p-type CuInSe2 thin films prepared using chemical bath deposition , 2000 .

[7]  J. Mu,et al.  Synthesis of CuInS2 Nanocubes by a Wet Chemical Process , 2005 .

[8]  A. M. Chaparro,et al.  Electrochemical growth and properties of CuInS2 thin films for solar energy conversion , 2006 .

[9]  Kevin Barraclough,et al.  I and i , 2001, BMJ : British Medical Journal.

[10]  J. Herrero,et al.  Electrodeposition of CuIn alloys for preparing CuInS2 thin films , 1990 .

[11]  Charles W. Smith,et al.  Preparation and properties of CuInS2 thin films produced by exposing sputtered Cu‐In films to an H2S atmosphere , 1979 .

[12]  H. Lewerenz,et al.  Efficient solar energy conversion with electrochemically conditioned CuInS2 thin film absorber layers , 2006 .

[13]  Rommel Noufi,et al.  Progress toward 20% efficiency in Cu(In,Ga)Se2 polycrystalline thin‐film solar cells , 1999 .

[14]  S. Ebrahim,et al.  Preparation and characterization of chalcopyrite compound for thin film solar cells , 2011 .

[15]  K. Yoshino,et al.  Effect of annealing for CuInS2 thin films prepared from Cu-rich ternary compound , 2009 .

[16]  Hybrid Inorganic–Organic Heterojunction Solar Cell , 2011 .

[17]  R. Ortíz,et al.  Electrochemical growth of CuInSe2 thin film on different substrates from alkaline medium. Characterization of the films , 2006 .

[18]  C. X. Qiu,et al.  Study of CuInSe2 thin films prepared by electrodeposition , 1995 .

[19]  K. Koumoto,et al.  Electrodeposition of CuInS2 from aqueous solution (II) electrodeposition of CuInS2 film , 1996 .

[20]  W. Marsden.  I and J , 2012 .

[21]  S. Ebrahim,et al.  A novel CuInS 2 /polyaniline base heterojunction solar cell , 2010 .

[22]  C. X. Qiu,et al.  ZnO/CdS/CuInSe2 photovoltaic cells fabricated using chemical bath deposited CdS buffer layer , 1997 .

[23]  L. Arriaga,et al.  Band Edges Determination of Cuins Thin Films Prepared by Electrodeposition , 2004 .

[24]  M. Bendahan,et al.  Preparation and optical absorption of electrodeposited or sputtered, dense or porous nanocrystalline CuInS2 thin films , 2008 .

[25]  M. Yakushev,et al.  Magnetic field effect on free and bound excitons in chalcopyrite CuInS2 , 2007 .