Technological characteristics of perovskite solar cell windows using CdS – wurtzoid structure

One of the most important things about clean electric power at present is the use of alternative sources that are harmful to nature. Solar cells are one of the most important sources of clean energy for electricity production, and the issue of increasing the efficiency of the requirements governing the manufacture of solar cells. The perovskite cells like methyl-ammonium lead tri iodide (CH3NH3PbI3) of the promising cells and the process of technological development to manufacture these cells are urgent priorities. Development includes window materials used Electron Transport Layer (ETL). Cadmium sulfide CdS in wurtzoid instead of wurtzite structure has been used as windows for perovskite solar cell. CdS in wurtzoid structure as a window was produced by pulse laser deposition (PLD) on a Fluorine-doped Tin Oxide (FTO) substrate as a first step to perform perovskite solar cell; (FTO/Compact Wurtzoid - CdS/CH3NH3PbI3 / PEDOT: PSS / Cu), where Poly ethylenedioxythiophene:polystyrene sulfonate (PEDOT: PSS) was used as the hole transport layer (HTL). Composition and crystal structure of the thin films and powder preparation samples were studied by X- Ray Diffraction (XRD), beside calculations of lattice constants, crystallite size, dislocation density and micro strain. Light I-V Measurement Test Reports were recorded by manual photovoltaic measurements system. Optical properties such as the absorption, the energy gap and transmittance of the film coated are investigated by UV-Vis absorption spectrophotometer. Results of efficiency were shown that the new solar cell has excellent stability and good performance with efficiency reaches 19.3%.