%0 Journal Article %T Electrochemical deposition of p-type FeS2 thin films absorber layer for photovoltaic cell %J Advanced Materials Proceedings %I International Association of Advanced Materials %Z 2002-4428 %A Prabukanthan, P. %A Lakshmi, R. %A Rajesh Kumar, T. %A Thamaraiselvi, S. %A Harichandran, G. %D 2017 %\ 08/01/2017 %V 2 %N 8 %P 521-525 %! Electrochemical deposition of p-type FeS2 thin films absorber layer for photovoltaic cell %K Iron pyrite %K electrochemical deposition %K structural properties %K optical properties %K electrical properties %R 10.5185/amp.2017/811 %X Electrochemical deposition (ECD) of FeS2 thin films from aqueous solution contains FeSO4, Na2S2O3.5H2O and H2SO4.  ECDs were performed at different bath temperatures (30, 40, 50, 60 and 70°C) with constant pH (~2). FESEM images shows that the grains are as deposited films with stoichiometric iron pyrite thin films were successfully formed at 50, 60 and 70°C and S/Fe ratio in as-deposited films were ~2. GAXRD studies of as-deposited at 30 and 40°C FeS2 thin films shows a minor phase of orthorhombic marcasite and major cubic pyrite phase observed. As-deposited thin films at 50, 60 and 70°C brings about the formation of FeS2 with single crystalline cubic phases with a strong (111) preferred orientation and without any contribution of marcasite phase. When the bath temperature was increased, as-deposited thin films of crystalline size, thickness and roughness value increased due to rate of formation FeS2 increased. Raman spectra of the FeS2 thin films presented characteristic peaks of S-S active mode at 377 cm-1.  The optical spectra of the as-deposited FeS2 thin films with different bath temperatures showed a clear absorption edge band gap of these films from 0.86 to 0.96 eV.  As-deposited FeS2 thin films at different bath temperatures show p-type conductivity. Copyright © 2017 VBRI Press. %U https://amp.iaamonline.org/article_16335_eaff6e8c258831393064d7239ec56801.pdf