Organic-inorganic ITO/CuPc/CdS/CuPc/Al solar cell prepared via pulsed laser deposition

Two layers of organic copper phthalocyanine (CuPc) sandwich with cadmium sulfide (inorganic) (CdS) were deposited at different thickness on ITO substrates Using a Q-Switching Nd:YAG laser for Pulsed Laser Deposition (PLD) of 240 and 500 mJ energy respectively under vacuum condition of 10−3 torr at room temperature. Morphology, Structure and electrical conductivity of CuPc and CdS were investigated. The grain size of CuPc thin film and average roughness at thickness 90 nm are (72.39nm, 13.4nm) respectively via AFM measurement. XRD analysis of CuPc thin film at thickness 200 nm shows two peaks at 2θ=6.99 ° and 2θ=9.1 ° which corresponded to the planes (100) and (Γ02) that mean structure is polycrystalline. Conductivity measurement shows two activation energies of CuPc and CdS, which is agreement with polycrystalline. Hall Effect measurements show the Carrier concentration, Hall mobility and the type of semiconductor that CuPc is p-type and CdS is n-type. The conversion efficiency of ITO/CuPc/CdS/CuPc/Al solar cell was 0.924 % using tungsten halogen source with intensity(25 mw/cm2).