成果報告書詳細
管理番号20130000000545
タイトル*平成24年度中間年報 太陽エネルギー技術研究開発 太陽光発電システム次世代高性能技術の開発 高効率・高耐久性色素増感太陽電池モジュールの研究開発(色素増感太陽電池モジュール化技術と高耐久性化研究開発)
公開日2015/4/25
報告書年度2012 - 2012
委託先名株式会社フジクラ
プロジェクト番号P07015
部署名新エネルギー部
和文要約
英文要約Title: Development of Next-generation High-performance Technology for Photovoltaic Power Generation System. Research and Development of Highly Efficient and Durable Modules of Dye-sensitized Solar Cells (FY2010-FY2014) FY2012 Annual Report

1. This R&D. The dye-sensitized solar cell (DSC) can be prepared by screen-printing without needing a high vacuum process and expensive materials. Therefore, DSC is expected as a low-cost PV. In this R&D, Fujikura Co., Ltd. performs the technology development of the highly efficient DSC module that has enough durability at outdoor utilization. As the target of this R&D, we will achieve less than 10% of efficiency decline at the JIS C8938 durability tests for DSC modules. And also, the 10% light-to-electron conversion efficiency at 30cm-by-30cm DSC modules is the final aim until 2014. In order to accomplish above-mentioned targets, Fujikura conducted the research subjects described below. (1) "The R&D of large area and high durable DSC module" In this R&D, we perform technology development for the purpose of the highly durable DSC module having about 30cm-by-30cm areas, that can endure outdoor use for a long term. (2) "The outdoor durability test of the DSC module" On this theme, we develop a manufacture technology of the large area DSC panel which connected DSC modules, for the practical use of DSC. Moreover, we carry out the outdoor actual proof test and examine properties change of the DSC in the practical use environment. (3) "The efficiency improvement technology development of the high durable DSC module" In this subject, we carry out various technology developments to achieve over 10% of conversion efficiencies with a high durable DSC module. 2. Results. At last year, we made 5cm-by-5cm cells that show around 8% conversion efficiency (aperture area). These cells were exposed to the most difficult B-2 test (85 degrees Celsius, 85% RH, 1,000 hours) in JIS C 8938 tests. In this test, we succeeded in almost maintaining conversion efficiency and achieved less than 5% of efficiency declines in 32 cells out of 40 cells. Moreover, as enlargement of the module area, we made 25cm-by-25cm series connected modules consisting of two unit cells and obtained the conversion efficiency of 7.4% (aperture area). We achieved 3% of relative efficiency declines after the B-2 test (85 degrees Celsius, 85%RH, 1,000 hours) at the 25cm-by-25cm module with 7.2% conversion efficiency (aperture area). In this year, we carried out other durability tests (A-1 and A-5) for 25cm-by-25cm modules and confirmed that a relative efficiency declines were less than 1% after those tests. At the outdoor durability tests, we confirmed five-months stable operation using 50cm-by-50cm modules. For an efficiency improvement technology, we developed new dye which enable photoelectric conversion until 1,000nm.
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