New Ruthenium Sensitizer with Carbazole Antennas for Efficient and Stable Thin-Film Dye-Sensitized Solar Cells

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• 作者：Chia-Yuan Chen ; Nuttapol Pootrakulchote ; Shi-Jhang Wu ; Mingkui Wang ; Jheng-Ying Li ; Jia-Hung Tsai ; Chun-Guey Wu ; Shaik M. Zakeeruddin ; Michael Grtzel
• 刊名：Journal of Physical Chemistry C
• 出版年：2009
• 出版时间：December 3, 2009
• 年：2009
• 卷：113
• 期：48
• 页码：20752-20757
• 全文大小：221K
• 年卷期：v.113,no.48(December 3, 2009)
• ISSN：1932-7455

文摘

A new heteroleptic ruthenium complex, coded CYC-B13, incorporating an antenna ligand composed of the sequential connection of a conjugated segment and carbazole hole-transport moiety was prepared. This new sensitizer exhibits the lower energy MLCT band centered at 547 nm with a high molar absorption coefficient of 1.93 × 10⁴ M⁻¹ cm⁻¹. Thin-film cells based on this new sensitizer show good conversion efficiency (>8%) and excellent durability under light soaking at 60 °C in simulated sunlight for 1000 h. An all-solid state device based on CYC-B13 is also demonstrated to have a conversion efficiency of 3.8%. The photovoltaic data of DSCs sensitized with CYC-B13 suggested that carbazole is a photostable hole-transporting moiety to be used in dye-sensitized solar cells.