Abstract
The present paper studies the issue of forming a diffraction concentrator in the form of relief diffraction gratings. The possibility of their application for solar energy systems based on GaAs heterostructures has been studied. It was shown that the use of diffractive and holographic concentrators proves to be very effective, since they provide for the increased radiant flux onto sensitive surface of the solar cell, whereas no automatic solar tracker is required. This will create novel approaches for a wide range application of gallium arsenide solar cells.
Highlights
It is widely known, that solar cells are currently well developed on the basis of polycrystalline and single-crystal silicon
We are witnessing over the past few years certain achievements in the development of solar cells based on the cadmium telluride with an efficiency ratio of 20.4% for single trial samples, and 21.2% for solar cells based on thin-film cells of copper selenide-indium-gallium
The present paper describes the possibility of implementation of diffraction, holographic and spectral concentrators for solar concentration on solar cell based on GaAs heterostructures
Summary
That solar cells are currently well developed on the basis of polycrystalline and single-crystal silicon. The worldwide scientific community is in a constant search for new physical, technical and technological techniques, which could let obtain high efficiency solar cells One solution to this problem is the development of novel physical foundations improving the efficiency of direct conversion of solar radiation into electrical energy using the recent achievements of modern nanotechnology (Nanophysics), holographic coatings, superlattices, functional ceramic layers, zero-dimensional inclusions. This will certainly contribute to the formation of novel technical, technological and design solutions for a new generation of solar cells. This leads to the event that radiation of this wavelength is reflected from the substrate-air interface and hits back the holographic grating, the process is repeated multiple times until the radiation is released through the central region free of holographic grating, passes through the second transparent plate 4 and falls onto solar cell 5
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