Triarylamine‐Substituted Imidazole‐ and Quinoxaline‐Fused Push–Pull Porphyrins for Dye‐Sensitized Solar Cells
Citations Over TimeTop 10% of 2013 papers
Abstract
We have prepared a push-pull porphyrin with an electron-donating triarylamino group at the β,β'-edge through a fused imidazole group and an electron-withdrawing carboxyquinoxalino anchoring group at the opposite β,β'-edge (ZnPQI) and evaluated the effects of the push-pull structure of ZnPQI on optical, electrochemical, and photovoltaic properties. ZnPQI showed red-shifted Soret and Q bands relative to a reference porphyrin with only an electron-withdrawing group (ZnPQ), thus demonstrating the improved light-harvesting property of ZnPQI. The optical HOMO-LUMO gap was consistent with that estimated by DFT calculations. The ZnPQI-sensitized solar cell exhibited a relatively high power conversion efficiency (η) of 6.8 %, which is larger than that of the ZnPQ-sensitized solar cell (η=6.3 %) under optimized conditions. The short-circuit current and fill factor of the ZnPQI-sensitized solar cell are larger than those of the ZnPQ-sensitized solar cell, whereas the open circuit potential of the ZnPQI-sensitized cell is smaller than that of the ZnPQ-sensitized cell, leading to an overall improved cell performance of ZnPQI. Such fundamental information provides a new tool for the rational molecular design of highly efficient dye-sensitized solar cells based on push-pull porphyrins.
Related Papers
- → Performance Degradation of Dye-Sensitized Solar Cells Induced by Electrolytes(2012)30 cited
- → A DSSC Electrolyte Preparation Method Considering Light Path and Light Absorption(2022)10 cited
- → Enhanced open-circuit voltage in methoxyl substituted benzodithiophene-based polymer solar cells(2016)19 cited
- → Open circuit voltage of organic photovoltaic cells using C60 as acceptor: variation with the donor(2019)10 cited
- → Effect of Conducting Ability of Electrolytes on the Photovoltaic Performance of Quasi-Solid State Dye-Sensitized Solar Cells(2011)1 cited