Porphyrin Sensitizers Bearing a Pyridine-Type Anchoring Group for Dye-Sensitized Solar Cells

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• 作者：Chi-Lun Mai ; Thomas Moehl ; Chi-Hung Hsieh ; Jean-David D茅coppet ; Shaik M. Zakeeruddin ; Michael Gr盲tzel ; Chen-Yu Yeh
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：July 15, 2015
• 年：2015
• 卷：7
• 期：27
• 页码：14975-14982
• 全文大小：453K
• ISSN：1944-8252

文摘

Three novel efficient donor鈥揳cceptor porphyrins, MH1鈥揗H3, with a pyridine-type acceptor and anchoring group were synthesized and their optical, electrochemical, and photovoltaic properties investigated. Replacing the commonly used 4-carboxyphenyl anchoring group with 2-carboxypyridine, 2-pyridone, and pyridine did not significantly change the absorption and electrochemical properties of the porphyrin dyes. These new porphyrin dyes MH show power conversion efficiencies of 8.3%, 8.5%, and 8.2%, which are comparable to that of the benchmark YD2-o-C8 (畏 = 8.25%) under similar conditions. It was demonstrated that 2-carboxypyridine is an efficient and stable anchoring group as MH1 and showed better cell performance and long-term stability than YD2-o-C8 under light soaking conditions.