成果報告書詳細
管理番号20140000000294
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 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 (高効率・高耐久性色素増感太陽電池の基盤的研究)
公開日2014/12/27
報告書年度2013 - 2013
委託先名学校法人東京理科大学
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1. Contents of this R&D.
The targets of this R&D are development of the 30cm-by-30cm DSC sub-modules which shows the conversion efficiency higher than 10%, and maintains this efficiency more than 90% after the A-1, A-2, A-5, B-1 and B-2 tests of JIS C-8938 environmental and endurance tests. In order to obtain the insights into the efficiency improvement of the DSC sub-modules, preparation of the 1cm-by-1cm DSCs showing the conversion efficiency higher than 13% have been carried out. In this year, several studies summarized below have been carried out to achieve above mentioned targets.
2. Results.
(1) Studies on the efficiency improvement of 1cm-by-1cm DSCs.
In this year, four attempts have been carried out to improve the conversion efficiency of the 1cm-by-1cm DSCs. First attempt is optimization of the dye-adsorption solvent for the cosensitized DSCs with Black dye and D131. Conversion efficiency of the cosensitized DSCs have been increased about 0.4% by using the dye-adsorption solvent composed of the three kinds of organic solvent. Second attempt is preparation of the highly efficient sensitizers. Novel three ruthenium sensitizers have been synthesized, and the performances of the DSCs with these sensitizers have been evaluated. TUS-38 sensitizer which has a 2-hexylthiophen unit at the 4-position of the terpyridine ligand showed 10.6% conversion efficiency. Third attempt is optimization of the electrolyte composition of the cosensitized DSCs with Black dye and D131. By optimizing the LiI concentration, conversion efficiency was increased about 0.4%, and by employing the different kind of imidazolium salt instead of 1,2-Dimethyl-3-propylimidazolium Iodide (DMPImI), conversion efficiency was also increased about 0.3%. Forth attempt is the preparation of the highly efficient TiO2 photoelectrodes. Conversion efficiency was improved about 0.5% by using novel TiO2 photoelectrode containing the TiO2 nanoparticle with a 10 nm diameter. Finally, 11.75% conversion efficiency for the 1.0cm2-sized DSC was verified by AIST.

(2) Development of the highly efficient DSC sub-modules with a sufficient stability.
Optimization of the electrolyte composition of the the 1.0cm2-sized DSCs with MPN electrolyte has been carried out to improve the conversion efficiency. 9.2% efficiency was increased to 9.7% by using the different kind of imidazolium iodide salt instead of DMPImI. This efficiency was further increased to 10.4% by optimizing the concentrations of the other electrolyte components. 9.3% conversion efficiency was obtained in the 5cm-by-5cm DSC sub-modules by using the electrolyte with the optimized composition.

(3) Investigation of the materials for the low-cost fabrication of DSCs.
10.3% conversion efficiency, which is almost the same to that of the DSC with a Pt counter electrode, was obtained in the DSCs with a carbon counter electrode by optimizing the film thickness of the carbon electrode.
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