{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9601650","patent":{"patent_number":"US-9601650","title":"Machine and process for continuous, sequential, deposition of semiconductor solar absorbers having variable semiconductor composition deposited in multiple sublayers","assignee":null,"inventors":[],"filing_date":"2013-03-11T00:00:00.000Z","publication_date":"2017-03-21T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L","H01L"],"num_claims":16,"abstract":"A method of manufacture of I-III-VI-absorber photovoltaic cells involves sequential deposition of films comprising one or more of silver and copper, with one or more of aluminum indium and gallium, and one or more of sulfur, selenium, and tellurium, as compounds in multiple thin sublayers to form a composite absorber layer. In an embodiment, the method is adapted to roll-to-roll processing of photovoltaic cells. In an embodiment, the method is adapted to preparation of a CIGS absorber layer having graded composition through the layer of substitutions such as tellurium near the base contact and silver near the heterojunction partner layer, or through gradations in indium and gallium content. In a particular embodiment, the graded composition is enriched in gallium at a base of the layer, and silver at the top of the layer. In an embodiment, each sublayer is deposited by co-evaporation of copper, indium, gallium, and selenium, which react in-situ to form CIGS."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Machine and process for continuous, sequential, deposition of semiconductor solar absorbers having variable semiconductor composition deposited in multiple sublayers","description":"A method of manufacture of I-III-VI-absorber photovoltaic cells involves sequential deposition of films comprising one or more of silver and copper, with one or more of aluminum indium and gallium, an","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9601650","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9601650","citation_suggestion":"Patentable. \"Machine and process for continuous, sequential, deposition of semiconductor solar absorbers having variable semiconductor composition deposited in multiple sublayers\" (US-9601650). https://patentable.app/patents/US-9601650","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9601650","json":"https://patentable.app/api/llm-context/US-9601650","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:04:03.912Z"}