Features of polycrystalline silicon fabricated by fivefold remelting in a solar furnace
А. С. СаидовNPO Fizika-Solntse, Physicotechnical Institute of the Academy of Sciences of the Republic of Uzbekistan, Tashkent, UzbekistanA. Yu. LeydermanNPO Fizika-Solntse, Physicotechnical Institute of the Academy of Sciences of the Republic of Uzbekistan, Tashkent, UzbekistanSh. T. ManshurovNPO Fizika-Solntse, Physicotechnical Institute of the Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan
ABI
Аннотация
This paper reports the distribution of impurities in polycrystalline silicon obtained through fivefold remelting in a solar furnace and shows that in practically all impurities (iron, calcium, aluminum, selenium, silver, etc.) it is of a periodic character according to the sample length. Such a material was found to have rather interesting properties, i.e., in the structures made of it with simple ohmic contacts, even during a small temperature effect and a rise in the current and voltage. Currently, one of the promising methods of the purification of metallurgical silicon is its purification in open air by means of beaming solar energy.
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