成果報告書詳細
管理番号20130000000529
タイトル*平成24年度中間年報 最先端研究開発支援プログラム 低炭素社会に資する有機系太陽電池の開発 色素増感太陽電池の特徴を活かした用途開発と、それに必要な要素技術の研究開発
公開日2014/5/9
報告書年度2012 - 2012
委託先名アイシン精機株式会社 株式会社豊田中央研究所
プロジェクト番号P09026
部署名新エネルギー部
和文要約
英文要約Title: Funding Program for World-Leading Innovative R&D on Science and Technology / Development of organic photovoltaics toward a low-carbon society / Development of elemental technologies and practical applications contained features of dye-sensitized solar cells
(FY2010-FY2013) FY2012 Annual Report
AISIN Seiki Co., Ltd
Toyota Central R&D Labs., Inc.

The only Ru complexes, Z907, N719 etc. have been evaluated for dye-sensitized solar cells (DSCs) having the long-term stability for outdoor use. The other organic dye has an advantage for more colorful design and its modest cost, larger molar absorption coefficient. However, the long-term stability of the cell using the other colorful organic dyes has not been reported yet. Therefore, we have been studying the stability of DSCs using colorful organic dyes. Now, we have conducted the acceleration test under the continuous 1sun light soaking at 60℃ of DSCs using the red, yellow, green or blue dyes to clarify the relation between the molecular structure of dye and the stability of the cells. Metal complexes such as Ru complex (Z907 or N749) or Zn phtalocyanine (PCH001) or Zn porphyrin (YD2) were more stable than organic dyes. The stability of donor-accepter (D-A) organic dye having cyano-carboxylic acid as the anchor molecule, such as D131 or MK2 was slightly lower than metal complexes. The stability of D-A organic dyes coupled with double bond such as unsymmetrical squaraine (SQ2) and Indoline with double rhodanine (D149, D205, D358) was much lower than D131 or MK2 dye. It has been found that the deterioration of the cells depended on the kind of the dyes by impeadance and mass spectroscopy of the cells. The oxidation decomposition of D-A organic dyes coupled with double bond was observed, although the main molecular frame of donor or accepter units was maintained. The decarboxylation of dyes was one of the degradation mechanisms with the DSCs using D-A dyes having cyano-carboxylic acid. The stability of the cells was improved by changing the anchor molecule of D-A dyes.
 Next, it was found that the performance after 1sun light soaking test at 60℃ or thermal cycle test of DSC modules with Z907 dye and ionic liquids electrolyte having the monolithic structure were maintained by improving the fabrication process of DSC modules. To monitor DSC module performance in the field test, we designed and produced the self-luminous signboards which would be powered by DSC module. In certain places (use of reflected light from wall, for example), the power generation was observed more. Module temperature rises rapidly with solar irradiation, the performance of the DSC with ionic liquid at low-temperature should not be a big problem, in practice use. We have developed the hexagonal and colorful solar chairs using DSC modules and LED lights and batteries. The disaster kits and the output terminal of cell-phones were set inside the solar chairs.
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