Optical Losses of Thin Solar Cells on the Basis of n-ZnS / p-CdTe and n-CdS / p-CdTe Heterojunctions

The optical reflection and absorption losses in the accessory layers of solar cells based on n-ZnS / p- CdTe and n-CdS / p-CdTe heterojunctions are defined in this work. Aluminum doped zinc oxide is used as the front conductive layer material. It is shown that the replacement of traditional window material (CdS) for a wide-one (ZnS) leads to an increase in accessory solar cells layers transmittance. When the thickness of the window layers is 50 nm, the transmittance using ZnS windows with the wavelength of 380-500 nm is higher in 7-40 % than the corresponding value for CdS. At 300 nm for the same spectral field the difference increases to 8-89 %. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3559

Structural Properties of ZnO Thin Films Obtained by Chemical Bath Deposition Technique

Zinc oxide thin films have been deposited onto glass substrates from zinc sulfate, ammonia and thiourea aqueous solution by chemical bath deposition. In the work there were specified solution preparation procedure and optimized the composition of the solution and content of component in it. X-ray diffraction and high-resolution scanning electron microscopy were used to characterize structure formation of obtaining ZnO films. As a result of investigation the effect of time deposition on the structural and substructural properties such as lattice parameters, texture quality, coherent scattering domain size was determined. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3095

Influence of solution precursors on structure of ZnO films

In the work using high resolution scanning electron microscopy and X-ray analysis, we carry out the studying of the correlation between chemical and technological conditions of deposition, the initial solution composition and structural properties of the synthesized samples of zinc oxide. Growth of the layers depends on the initial precursors and it occurs through formation of the ordered array of nanorods and nanoflowers. It is shown that it is possible to choose the optimal conditions to obtain ZnO films with controlled structural properties that can be used as the base layers in microelectronic devices

Optical investigation of zinc selenide films

As results we can said that were investigated optical properties of ZnSe thin films, deposited by CSVS method at different physical and technological condensation regimes. Established physical and technological deposition regimes with optimal parameters for using as window layers of the heterojunction tandem solar cells and in optoelectronic devices. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/407