Optimization physical properties of CdTe /Si solar cell devices fabricated by vacuum evaporation

Abstract

We investigated at the optical properties, structural makeup, and morphology of thin films of cadmium telluride (CdTe) with a thickness of 150 nm produced by thermal evaporation over glass. The X-ray diffraction study showed that the films had a crystalline composition, a cubic structure, and a preference for grain formation along the (111) crystallographic direction. The outcomes of the inquiry were used to determine these traits. With the use of thin films of CdTe that were doped with Ag at a concentration of 0.5%, the crystallization orientations of pure CdTe (23.58, 39.02, and 46.22) and CdTe:Ag were both determined by X-ray diffraction. orientations (23.72, 39.21, 46.40) For samples that were pure and those that were doped with silver, the optical band gap shrank by (1.52-1.47) eV (400–1100)nm resulting in a drop in the absorption coefficient. An incident power density of (100 mW/cm2) was used to examine the I-V properties of heterojunctions created by light on a variety of clean and doped materials. In accordance with the X-ray diffraction analysis, the films had a cubic structure and dominated grain growth along the (111) crystallographic direction.

Effect of ratio gold nanoparticles on the properties and efficiency photovoltaic of thin films of amorphous tungsten trioxide

“…Metal nanoparticles' color and optical characteristics are caused by surface plasma resonance (SPR), a collective longitudinal excitation of conduction electrons on the nanoparticles' surface [7]. The primary goal of this study is to fabricated (n-WO 3 /p-Si) heterojunction with doped tungsten oxide films in various concentrations of gold nanoparticles (0, 0.04, 0.08 M) by using the spray pyrolysis technique, which is one of the processes used to produce and prepare thin films of tungsten trioxide [8][9][10][11][12][13][14][15], as well as to examine the structural, optical, and surface characteristics of the prepared samples.…”