Dye-Sensitized Solar Cells with Improved Performance using Cone-Calix[4]Arene Based Dyes

Three cone‐calix[4]arene‐based sensitizers (Calix‐1–Calix‐3) with multiple donor–π–acceptor (D–π–A) moieties are designed, synthesized, and applied in dye‐sensitized solar cells (DSSCs). Their photophysical and electrochemical properties are characterized by measuring UV/Vis absorption and emission...

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Veröffentlicht in:ChemSusChem 2015-01, Vol.8 (2), p.280-287
Hauptverfasser: Tan, Li-Lin, Liu, Jun-Min, Li, Shao-Yong, Xiao, Li-Min, Kuang, Dai-Bin, Su, Cheng-Yong
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Sprache:eng
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Zusammenfassung:Three cone‐calix[4]arene‐based sensitizers (Calix‐1–Calix‐3) with multiple donor–π–acceptor (D–π–A) moieties are designed, synthesized, and applied in dye‐sensitized solar cells (DSSCs). Their photophysical and electrochemical properties are characterized by measuring UV/Vis absorption and emission spectra, cyclic voltammetry, and density functional theory (DFT) calculations. Calix‐3 has excellent thermo‐ and photostability, as illustrated by thermogravimetric analysis (TGA) and dye‐aging tests, respectively. Importantly, a DSSC using the Calix‐3 dye displays a conversion efficiency of 5.48 % in under standard AM 1.5 Global solar illumination conditions, much better than corresponding DSSCs that use the rod‐shaped dye M‐3 with a single D–π–A chain (3.56 %). The dyes offer advantages in terms of higher molar extinction coefficients, longer electron lifetimes, better stability, and stronger binding ability to TiO2 film. This is the first example of calixarene‐based sensitizers for efficient dye‐sensitized solar cells. Sunny Cali: Novel and efficient cone‐calix[4]arene‐based dyes (Calix‐1, Calix‐2, and Calix‐3) with multiple donor–π–acceptor (D–π–A) moieties are prepared and tested for use in dye‐sensitized solar cells (DSSCs). The conversion efficiency of one of the dyes is above 5 %, compared to 3.56 % for a device using rod‐shaped dye M‐3 with a single D–π–A chain. The cone‐calix[4]arene‐based dyes offer higher molar extinction coefficients, longer electron lifetimes, and better thermostability.
ISSN:1864-5631
1864-564X
DOI:10.1002/cssc.201402401