Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/99119
標題: Synthesis and Characterization of Novel β-Bis( N, N-diarylamino)-Substituted Porphyrin for Dye-Sensitized Solar Cells under 1 sun and Dim Light Conditions
作者: Reddy, Kamani Sudhir K
Liu, Yu-Chieh
Chou, Hsien-Hsin
Kala, Kannankutty
Wei, Tzu-Chien
Yeh, Chen-Yu
葉鎮宇
關鍵字: X-ray crystallography
density functional theory
dim light
dye-sensitized solar cells
β-substituted porphyrin
摘要: In this work, we have synthesized a novel porphyrin dye named SK7, which contains two N, N-diarylamino moieties at two β-positions as electron-donating units and one carboxy phenylethynyl moiety at the meso-position as an electron-withdrawing, anchoring group. This novel dye was tested for the application in dye-sensitized solar cells. The light-harvesting behavior of SK7 and YD2 was investigated using UV-vis absorption and density functional calculation. The electron transport properties at the TiO2/dye/electrolyte interface for SK7- and YD2-based devices were evaluated by electrochemical impedance spectroscopy. X-ray crystallographic characterization was conducted to understand the influence of two N, N-diarylamino units at two β-positions. The power conversion efficiencies of ca. 6.54% under 1 sun illumination (AM 1.5G) and ca. 19.72% under a T5 light source were noted for the SK7 dye. The performance of SK7 is comparable to that of dye YD2, which contains only one N, N-diarylamino moiety at the meso-position (ca. 7.78 and 20.00% under 1 sun and T5 light, respectively).
URI: http://hdl.handle.net/11455/99119
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