成果報告書詳細
管理番号20130000000553
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 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 (高効率タンデム用色素材料の研究開発)
公開日2015/4/25
報告書年度2012 - 2012
委託先名新日鉄住金化学株式会社
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Title: Research and development of high efficient and low-cost dye-sensitized solar cells suitable for mass production by designing three coordinated interfaces (FY2010-2014) FY2012 Annual Report

Our purpose is to develop tandem dye-sensitized solar cells with 15% efficiency by the end of 2014 fiscal year through the collaboration of Kyushu Institute of Technology(KIT) and Nippon Steel & Sumikin Chemical Co. Ltd.(NSSCC). This subject is consist of two sub-themes. One is to develop tandem cell structure by KIT, the other is to develop near infrared dyes suitable for the tandem cell by KIT and NSSCC. The goal of this year for NSSCC is to modify mother structures of dyes covering wavelengths up to 930nm and develop synthetic root for those dyes. We selected phthalocyanine and porphyrin structures as potential NIR dye. MO Calculations were done for about 170 structures. We designed and synthesized phthalocyanines having absorption edge from 750nm to 1350nm. We found phtalocyanines having new adsorption functionality without anchoring groups suc4h as COOH and PO3H. This new type phtalocyanine showed absorption maximum at 850nm, absorption edge at 950nm and 35% IPCE at absorption maximum using SnO2 semiconductor electrode suitable for tandem cell. For cocktail cells we developed synthetic root for several candidates and synthesized 20 phthalocyanines and 3 porphyrins having general anchoring functionality. All phtalocyanines and porphyrin are designed and controlled MO energy levels to fit TiO2 conduction band to give charge separation and reduction by redox couples. Most of these phthalocyanines showed poor IPCE. The reason of these poor photo electron conversion efficiency is due to aggregation of dye molecules caused by aromatic ring stacking. To avoid the aggregation, sterically hindered substituents are introduced to model compound. Adjustments of MO levels for sterically hindered phtalocyanines were also done by MO calculation. 2 phtalocyanines were synthesized. Porphyrin dyes have generally absorption maximum around 600-700nm. As NIR dye, structure modification is necessary. To give longer wavelength, more longer conjugation structure must be involved. Result from MO calculation, we designed and tried to develop synthetic roots for several candidate. For synthesized compound, comparison between HOMO calculation and work function using Phto Electron Spectroscopy in Air (PESA) is useful for further simulation adding LUMO calculation by UV-Visible spectroscopy. We synthesized 2 porphyrins showing UV-VIS absorption edge above 900nm and photo electron conversion. Single cell using one porphyrin showed 14% IPCE at absorption maximum where IPCE curve of the cell gave higher than the curve of N719 above 720nm. We will evaluate other synthesized porphrin and continue to develop and modify NIR dyes in next fis
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る