Synthesis of Organic Sensitizers Using Azobenzene as π-Spacer Unit and Application in Dye-Sensitized Solar Cell
| Autor: | NGUYEN, DUC-TOAN, 阮德全 |
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| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 A series of novel sensitizers were successfully synthesized utilizing azobenzene as π-linkage unit for D-π-A structure. A slight red-shift the absorption spectra and λonset of the sensitizers could be observed when thienyl group was introduced to the acceptor moiety (A). Also, replacing the donor moiety (D) from carbazole to diarylamino could lead to a negative shift (~0.3 V) in the first oxidation potential. DFT calculation was also carried out and the trend of calculated HOMO-LUMO gaps was consistent to the experimental data obtained from the CV results (DT1 < DT2 < DT3 < DT4). These sensitizers were then employed in dye-sensitized solar cells to investigate their photovoltaic performances. Highest power conversion efficiency (PCE) of 0.84% was achieved for DT1-based DSSC due to its most bathochromic absorption spectrum. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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