成果報告書詳細
管理番号20140000000295
タイトル*平成25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 有機薄膜太陽電池モジュール創製に関する研究開発 (高分子系有機薄膜太陽電池モジュールの研究開発)
公開日2014/12/27
報告書年度2013 - 2013
委託先名住友化学株式会社
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In order to achieve the national target for introducing photovoltaic power generation system of 53GW by 2030, inexpensive and less-resource-limitation organic thin film solar cell (OPV) modules are going to be investigated and developed. The intermediate target performances in 2012 are cell efficiency of 8%, module efficiency of 6% and relative efficiency drop of less than 10% (Japanese Industrial Standards C8938) as durability. The final target performances in 2014 are cell efficiency of 12%, module efficiency of 10% and relative efficiency drop of less than 10% (Japanese Industrial Standards C8938) as durability. Five organizations including Sumitomo Chemical cooperate to achieve the objective. Sumitomo Chemical is in charge of the research and development of the OPV modules using conjugated polymers. Specifically, the policy for research and development is as follows:. (1) Creation of composition from materials for high efficiency photoelectric conversion materials. (2) Development of production technology for high-performance and large-size modules
We continued trying to achieve the high efficiency photoelectric conversion based on the low band gap polymers having 900nm absorption edge wavelength, called polymer A, by which larger efficiency than 15% would potentially be expected. Efficiency and its reproducibility of the OPV device were improved by modification of synthetic conditions and raw materials, taking into account the reproducibility of the scaled-up synthesis. Improvement by peripheral materials other than active layer materials was also studied. Using the new material which we developed originally, as a buffer layer material, both of Jsc and FF of the OPV device using polymer A were improved.
Regarding the development of OPV modules, we have so far reported efficiency of 6.4%(ap) of sub-module with 20cm x 20cm size using polymer A. In this year, we introduced EL inspection equipment as an analysis tool for a large-sized area in addition to EBIC, which enabled us to identified very small leakage positions with the size of less than 100 micron by delamination of organic layers. We finally improved the efficiency up to 6.6%(ap)
The production technology of the OPV modules with film substrates by all-printing process with Roll-to-Roll facilities was also developed. High-accuracy stipe patterns were obtained by tuning conditions of film forming process. The performance of the OPV module fabricated by Roll-to-Roll process was almost the same as that of the sheet OPV module.
We found only 20% decrease of the efficiency after 20000 hours of the outdoor weathering test of the OPV panel, and we confirmed almost 2 years lifetime.
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