THIN FILM SOLAR CELL AND MANUFACTURING METHOD FOR THE SAME

• Main Author: DEGUCHI KOJI
• Format: Patent
• Language: English; Japanese
• Published: 06.11.2014
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

PROBLEM TO BE SOLVED: To provide a thin layer solar cell using a compound semiconductor film which satisfies both of energy efficiency and sufficiently high production efficiency.SOLUTION: In a thin film solar cell in which a first electrode 102, a photoelectric conversion layer 100 and a second electrode 105 are laminated on a substrate 101, the photoelectric conversion layer has a laminated constitution of at least a p-type layer 103 and an n-type layer 104; and the p-type layer is composed of Cu, In, Ga and Se in which a composition ratio of Se in the p-type layer film is not less than 40 atom% and less than 50 atom%; and the n-type layer is a compound composed of an element of at least one group selected from group 2, group 7 and group 12, a group 13 element and a group 16 element and at least contains In as the group 13 element and at least contains S as the group 16 element. 【課題】エネルギー効率と十分な高い生産効率を両立させた化合物半導体膜を用いた薄層太陽電池の提供。【解決手段】基板１０１上に、第１電極１０２、光電変換層１００、第２電極１０５を積層した薄膜太陽電池において、前記光電変換層が少なくともｐ型層１０３とｎ型層１０４の積層構成を有し、前記ｐ型層がＣｕ、Ｉｎ、Ｇａ及びＳｅから成り、かつ、ｐ型層膜のＳｅの組成比が４０原子％以上５０原子％未満であり、前記ｎ型層が、２族、７族及び１２族から選択される少なくとも１つの族の元素と、１３族の元素と、１６族の元素とからなる化合物であり、かつ前記１３族の元素として少なくともＩｎを含有し、前記１６族の元素として少なくともＳを含有する薄膜太陽電池。【選択図】図１