1. Rapid Synthesis of Thiophene-Based, Organic Dyes for Dye-Sensitized Solar Cells (DSSCs) by a One-Pot, Four-Component Coupling Approach.
- Author
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Matsumura, Keisuke, Yoshizaki, Soichi, Maitani, Masato. M., Wada, Yuji, Ogomi, Yuhei, Hayase, Shuzi, Kaiho, Tatsuo, Fuse, Shinichiro, Tanaka, Hiroshi, and Takahashi, Takashi
- Subjects
THIOPHENES ,COMPOUND parabolic concentrators ,PHOTOVOLTAIC cells ,ARTIFICIAL photosynthesis ,DIRECT energy conversion ,SOLAR energy - Abstract
This one-pot, four-component coupling approach (Suzuki-Miyaura coupling/CH direct arylation/Knoevenagel condensation) was developed for the rapid synthesis of thiophene-based organic dyes for dye-sensitized solar cells (DSSCs). Seven thiophene-based, organic dyes of various donor structures with/without the use of a 3,4-ethylenedioxythiophene (EDOT) moiety were successfully synthesized in good yields based on a readily available thiophene boronic acid pinacol ester scaffold (one-pot, 3-step, 35-61 %). Evaluation of the photovoltaic properties of the solar cells that were prepared using the synthesized dyes revealed that the introduction of an EDOT structure beside a cyanoacrylic acid moiety improved the short-circuit current ( J
sc ) while decreasing the fill factor ( FF). The donor structure significantly influenced the open-circuit voltage ( Voc ), the FF, and the power conversion efficiency (PCE). The use of a n-hexyloxyphenyl amine donor, and our originally developed, rigid, and nonplanar donor, both promoted good cell performance ( η=5.2-5.6 %). [ABSTRACT FROM AUTHOR]- Published
- 2015
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