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CHALCOGENIDE-BASED MATERIALS AND METHODS OF MAKING SUCH MATERIALS UNDER VACUUM USING POST-CHALCOGENIZATION TECHNIQUES
CHALCOGENIDE-BASED MATERIALS AND METHODS OF MAKING SUCH MATERIALS UNDER VACUUM USING POST-CHALCOGENIZATION TECHNIQUES
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机译:基于硫属化物的材料和使用后氯化生成技术在真空下制备此类材料的方法
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摘要
The present invention provides strategies for making high quality CIGS photoabsorbing compositions on a substrate (18) from sputtered precursor film(s) (112). The precursors are converted into CIGS photoabsorbing material via a chalcogenizing treatment (also referred to as "post - chalcogenization", including, e.g., "post-selenization" when Se is used and/or "post-sulfurization" when S is used) using techniques that allow the post-chalcogenizing treatment to occur under atypically low pressure conditions. Consequently, the strategies of the invention are readily incorporated into batch processes or continuous processes such as roll-to-roll process occurring under vacuum. The present invention is useful at lab, pilot plant, and industrial scales. The precursor film (112) is capped by a second layer (114) such as elemental chalcogen using evaporation and then heat treated to form a chalcogenized layer (20).
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