Ruthenium sensitizer with thienothiophene-linked carbazole antennas in conjunction with liquid electrolytes for dye-sensitized solar cells

Chia Yuan Chen, Nuttapol Pootrakulchote, Tzu Hao Hung, Chun Jui Tan, Hui Hsu Tsai, Shaik M. Zakeeruddin, Chun Guey Wu, Michael Grätzel

研究成果: 雜誌貢獻期刊論文同行評審

51 引文 斯高帕斯(Scopus)

摘要

A new heteroleptic ruthenium complex, coded CYC-B12, incorporating an antenna ligand composed of sequential connections of a thienothiophene conjugated bridge and carbazole hole-transport moiety was prepared. This new sensitizer exhibits a lower energy MLCT band centered at 555 nm with a high molar absorption coefficient of 2.24 × 104 M-1 cm-1. The device sensitized by CYC-B12 in conjunction with a volatile electrolyte shows a high photovoltaic efficiency of 9.4% under an illumination of standard global AM 1.5G sunlight. With a low-volatile electrolyte, the cell based on this new sensitizer shows not only a good conversion efficiency of 8.2% but also excellent durability (>96%) under light soaking at 60°C in a simulated sunlight for 1000 h. The difference in the electron recombination kinetics caused by various liquid electrolytes or aging process is also investigated by employing the transient photoelectrical measurements.

原文???core.languages.en_GB???
頁(從 - 到)20043-20050
頁數8
期刊Journal of Physical Chemistry C
115
發行號40
DOIs
出版狀態已出版 - 13 10月 2011

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