成果報告書詳細
管理番号20130000000548
タイトル*平成24年度中間年報 太陽光発電システム次世代高性能技術の開発 三層協調界面構築による高効率・低コスト・量産型色素増感太陽電池の研究開発(高効率・高耐久性モジュールに関する研究開発)
公開日2015/4/25
報告書年度2012 - 2012
委託先名シャープ株式会社
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: Research and development of high-efficiency and low-cost dye-sensitized solar cells and their mass production technologies based on the three phase-harmonized interface (FY2010-2014) FY2012 Annual Report New Technology Development Center Sharp Corporation

Introduction: The purpose of this research is to develop high-efficiency and low-cost dye-sensitized solar modules suitable for mass production. During the FY2011, high-efficiency and low-cost DSC module structures were discussed and the issues of integrated DSC module were highlighted. High durability issues were also addressed.(Targets for the end of FY2012)1. Development of ca. 30cm x 30cm integrated DSC modules of 7% efficiency. 2. Development of high-stability modules with relative degradation ratio of less than 10% under JIS-C8938 A-2 (10 cycles), A-5 (500h) and B-2 (1000h) tests.(Experiments and results):1) Development of high-efficiency integrated DSC modules:During the FY 2012, we investigated the development of larger scale monolithic-type DSC modules. These modules were 20cm by 20cm large. We managed to obtain a conversion efficiency value of 9.1% (measured in-house) and 8.8% (measured by AIST) from a monolithic-type integrated module (20cm x 20cm) during this term. According to our in-house research, these values for 20cm x 20cm DSC module conversion efficiency are world records. The intermediate target of FY 2012 for this project was achieved. Furthermore, substrate low resistance technology (which is used in these modules) was applied to smaller size cells (1cm x 1cm). This allowed us to reach the new world record conversion efficiency of 11.9%. This result significantly exceeded the intermediate target for this project. 2) Development of high-stability DSC modules: During the FY2012, degradation process from ultraviolet irradiation was investigated. It was found that holes generated by ultraviolet irradiation inside the TiO2 layer reacted with acetonitrile. As a result, the remaining electrons promoted the decomposition of I3- ions. Analysis of electron injection process in degraded cells was effective to characterize the stability tests results. We also investigated materials that contributed to cell stability. It was found that additive materials in the electrolyte solution sensitively influenced not only the DSC cells performance, but also the cells heat resistance properties. From variable investigation based on above results, we examined the stability of monolithic integrated modules with 7% conversion efficiency under A-2, A-5 and B-2 tests. Finally, we managed to pass the A-2, A-5 and B-2 tests with a relative degradation ratio of less than 10%.
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