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Creating a high-performance photovoltaic cells for space applications

Создание высокоэффективных фотоэлектрических преобразователей космического назначения
Solar battery consisting of photovoltaic cells (Solar Cells) at present is unalternative long-term source of energy for spacecraft in near space. Basic research and development of advanced Solar Cells are aimed at achieving the theoretically predicted values of high energy conversion efficiency. However, the mass and energy characteristics are very important for space solar cells. Achieving a high energy conversion efficiency, together with a decrease in specific gravity and the increase of life of solar cells is possible due to the application of modern technology, the use of new materials and the improvement of methods of calculation, simulation and design of structures. The basis of the creation of modern solar cells for space purposes is the MOCVD technology in combination with thermal vacuum deposition technology and photolithographic techniques for the manufacture of solar cells based on a combination of semiconductors III and group V. The use of gallium arsenide and the ternary and quaternary compounds based on it (with indium, aluminum, phosphorus, etc.) can create multilayer semiconductor structure with optimal properties for the absorption and conversion of solar spectrum, high efficiency (29%) and good long service life (10-15 years). The energy and mass characteristics of such Solar Cells are acceptable for space applications and can be improved by technology modification. MOCVD technology allows to grow the all complex structure of modern solar cell including the semiconductor layers and additional layers such as tunnel junctions, wide-zones layers etc. during one technologic process. MOCVD technology has good productivity and grows rate. However it is necessary to have and control the good uniformity on the big area of the wafer near 27 sm2. Improvement of after growth processes - the creation of the current collecting contacts and antireflection coatings on the grown semiconductor structure also allows to increase the efficiency of solar cells and their durability. In addition to improvement of elements of semiconductor structure there are completely new ways to increase their properties such as quantum wells and quantum dots or Bregg reflections. This new elements require the improvement of technology approaches.


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PhD, chemistry, Docent of the Department of Nanostructured converters of energy, Chief Technologist of the Department of the OJSC “Scientific Production Enterprise “Kvant”
PhD, Solid State Physics, Docent, Head of Department of Nanostructured converters of energy, Head of Department of the OJSC “Scientific Production Enterprise “Kvant”
PhD, Solid State Physics, Deputy Head of Department of the OJSC “Scientific Production Enterprise “Kvant”
Engineer of the Department of Physical Chemistry, postgraduate student, Senior Research Scientist of the OJSC “Scientific Production Enterprise “Kvant”
demonstrationist of the Department of Nanostructured converters of energy, postgraduate student, Senior Research Scientist of the OJSC “Scientific Production Enterprise “Kvant”
Engineer of the Department of Engineer of the Department of Nanostructured converters of energy, Head of the Technological Laboratory of the OJSC “Scientific Production Enterprise “Kvant”
Engineer of the OJSC “Scientific Production Enterprise “Kvant”
Engineer of the Department of Nanostructured converters of energy, Head of the Laboratory of measurements of the OJSC “Scientific Production Enterprise “Kvant”
Dr., Professor, Chief Designer of Photovoltaics of the OJSC “Scientific Production Enterprise “Kvant”


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