Abstract
A new absorber material, ytterbium (Yb) doped CuInS2 semiconductor thin film, is firstly reported by this work for photovoltaic applications which was deposited by a simple, versatile and cost-effective chemical spray pyrolysis technique. The hold up of body centered tetragonal crystal phase along with high crystalline nature is noticed from XRD patterns in CuInS2 film after Yb doping. The irregular spherically shaped CuInS2 nanoparticles morphology changed to flakes with Yb doping under thermal pyrolysis decomposition process. Compare with pristine CuInS2, the higher photo response observed in Yb doped CuInS2 thin film. The results demonstrated that Yb doped CuInS2 thin film exhibited good optical and electrical properties and might have potential applications in photovoltaic technology.
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