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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Liu, Linfeng Li, Xiong Chen, Jiangzhao Sheng, Yusong Han, Hongwei Ko, Songguk |
| Copyright Year | 2015 |
| Abstract | Three D–π–A porphyrin sensitizers with different electronegative moieties (2,4,6-triphenyl-1,3,5-triazine, carbazole and triphenylamine) attached at the meso-position were designed and synthesized for monolithic dye-sensitized solar cells based on mesoscopic carbon counter electrodes. The effects of these different electronegative moieties on the photophysical, electrochemical and accordingly photovoltaic performance of the corresponding devices were investigated systematically. Electrochemical measurements indicate that the HOMO and LUMO energy levels could be tuned through the introduction of different electronegative groups onto the backbone of D–π–A porphyrin molecules. Current–voltage characteristics indicate that the Jsc and Voc of the DSSCs based on WH-C3, WH-C4 and WH-C5 increase as the electron-donating ability of their donors enhance in the order of WH-C3 < WH-C4 < WH-C5 and WH-C5-sensitized cells showed the best photovoltaic performance: a short circuit photocurrent density (Jsc) of 11.43 mA cm−2, an open circuit voltage (Voc) of 633.84 mV, and a fill factor (FF) of 0.69, corresponding to an overall conversion efficiency (η) of 5.00%. |
| Starting Page | 2889 |
| Ending Page | 2900 |
| Page Count | 12 |
| File Format | HTM / HTML PDF |
| ISSN | 11440546 |
| Volume Number | 39 |
| Issue Number | 4 |
| Journal | New Journal of Chemistry |
| DOI | 10.1039/c4nj02186j |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Dye-sensitized solar cell HOMO\/LUMO HOMO Electronegativity Carbazole Carbon Solar cell Short circuit Photocurrent Porphyrin Electrochemistry Triazine Jsc Triphenylamine |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Materials Chemistry Catalysis |
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