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Full-Text Articles in Physical Sciences and Mathematics
Dye-Sensitized Cualo2 Photocathodes For Tandem Solar Cell Applications, Andrew Nattestad, Xiaoli Zhang, Udo Bach, Yi-Bing Cheng
Dye-Sensitized Cualo2 Photocathodes For Tandem Solar Cell Applications, Andrew Nattestad, Xiaoli Zhang, Udo Bach, Yi-Bing Cheng
Australian Institute for Innovative Materials - Papers
Dye-sensitized solar cells (DSCs) using the p-type semiconductor CuAlO2, in conjunction with a highly effective hole injecting dye and an iodide-triiodide-based electrolyte have been produced, demonstrating photocathodic behavior. An improved open-circuit voltage (VOC) of 333 mV was observed, compared to analogous devices using NiO, which can be explained by the CuAlO2 valence-band energy, which is lower on the vacuum scale than that of NiO. Incident photon-to-charge-carrier efficiency response confirms that the observed photocurrent is generated by the dye.
Dithienothiophene (Dtt)-Based Dyes For Dye-Sensitized Solar Cells: Synthesis Of 2,6-Dibromo-Dtt, Tae-Hyuk Kwon, Vanessa Armel, Andrew Nattestad, Douglas R. Macfarlane, Udo Bach, Samuel J. Lind, Keith C. Gordon, Weihua Tang, David J. Jones, Andrew Holmes
Dithienothiophene (Dtt)-Based Dyes For Dye-Sensitized Solar Cells: Synthesis Of 2,6-Dibromo-Dtt, Tae-Hyuk Kwon, Vanessa Armel, Andrew Nattestad, Douglas R. Macfarlane, Udo Bach, Samuel J. Lind, Keith C. Gordon, Weihua Tang, David J. Jones, Andrew Holmes
Australian Institute for Innovative Materials - Papers
A one-pot synthesis of 2,6-dibromodithieno[3,2-b;2′,3′-d]thiophene (dibromo-DTT, 4) was developed. A key step was bromodecarboxylation of DTT-2,6-dicarboxylic acid, obtained by saponification of the diester 1. The donor-acceptor dye DAHTDTT (13), based on a central 2,6-bis[2′-(3′-hexylthienyl)]dithieno[3,2-b;2′,3′-d]thiophene core (9), was prepared and incorporated in a dye-sensitized solar cell (DSC), which exhibited an energy conversion efficiency of 7.3% with Voc of 697 mV, Jsc of 14.4 mA/cm2, and ff of 0.73 at 1 sun.