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Synthesis and Characterization of Novel β-Bis( N, N-diarylamino)-Substituted Porphyrin for Dye-Sensitized Solar Cells under 1 sun and Dim Light Conditions. | LitMetric

AI Article Synopsis

  • A new porphyrin dye called SK7 was created, featuring two electron-donating N, N-diarylamino groups and one electron-withdrawing carboxy phenylethynyl group, intended for use in dye-sensitized solar cells.
  • The study assessed the light absorption properties of SK7 compared to another dye, YD2, using UV-vis absorption and computational methods, while also analyzing electron transport dynamics through electrochemical impedance spectroscopy.
  • SK7 demonstrated power conversion efficiencies of approximately 6.54% under standard sunlight and 19.72% under T5 lighting, showing performance comparable to YD2, which had slightly lower efficiencies.

Article Abstract

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 TiO/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).

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Source
http://dx.doi.org/10.1021/acsami.8b14457DOI Listing

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