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PROCESS OF PREPARATION OF CHARGE TO PRODUCE SOLID SOLUTIONS OF CHALCOGENIDES OF LEAD AND TIN BY PARA-PHASE METHODS
PROCESS OF PREPARATION OF CHARGE TO PRODUCE SOLID SOLUTIONS OF CHALCOGENIDES OF LEAD AND TIN BY PARA-PHASE METHODS
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机译:相法制备电荷法生产铅锡锡硫化物固溶体的方法
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摘要
FIELD: technology of production of semiconductor materials and devices. SUBSTANCE: charge for production of solid solutions of chalkogenides of lead and tin is prepared by way of synthesis of charge material from elements in melt, standard directed crystallization of melt, removal of part of ingot enriched with own excessive components and impurities, grinding and processing of re-sublimations in dynamic vacuum. Then homogenizing firing is conducted at constant temperature, fraction of grains with diameter of 200-500 μm is isolated and preliminary evaporation at temperature equal to evaporation temperature of growing of layers and crystals is carried out. All mentioned operations are needed in combination and are sufficient for realization of proposed process of preparation of charge to produce layers of chalkogenides of lead and tin with improved reproducibility of composition and electrophysical properties. EFFECT: improved reproducibility of composition and electrophysical properties of layers and crystals of solid solutions of chalkogenides of lead an tin. 1 dwg, 4 tbl
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机译: (54)标题:具有硅酸盐涂层的固体颗粒(54):FESTKoRPERPARTKEL MIT SILKATBESCHICHTUNG(57)摘要:本发明涉及一种具有二氧化硅涂层的固体颗粒的生产方法,其包括以下步骤:将固体颗粒分散为将其涂覆在水性介质中以产生固体颗粒分散体,通过缓冲系统调节固体颗粒分散体的pH以产生缓冲的固体颗粒分散体,并向缓冲的固体颗粒分散体中添加碱性硅酸盐溶液以形成二氧化硅在涂覆期间将其涂覆在固体颗粒上,其中选择缓冲体系和碱性硅酸盐溶液的量,使得在添加碱性硅酸盐溶液之前和在添加完成之后,缓冲的固体颗粒分散体的pH至少为7.0。碱性硅酸盐溶液的最大含量为11.0。固体颗粒优选是无机固体,特别是