Research Paper : Structural Properties of CdS Nanoparticles for Solar Cell Applications

CH. Ashok... [et.all];

The cadmium sulphide (CdS) is an important II–VI semiconductor
(Eg = 2.42 eV, 515 nm) at room temperature with many excellent physical and chemical properties. It has promising applications in multiple technical fields including photochemical catalysis, gas sensor, detectors for laser and infrared, solar cells, nonlinear optical materials, various luminescence devices, optoelectronic devices etc. CdS being a wide band gap semiconducting material with better lattice matching properties made it suitable alternative for solar cell applications. Solar energy is the alternative potential renewable energy to fossil fuels. Present work deals with a coprecipitation synthesis method for the preparation of CdS nano particles. In this method cadmium sulphate and thiourea are used as a source material for
Cd and S respectively in the presence of N, N-Dimethyl formamide (DMF) as an organic solvent. The CdS nano particles have been characterized by X-Ray Diffraction (XRD), Particle Size Analyzer (PSA), Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectrometry (EDX).