Indoline and benzothiazole-based squaraine dye-sensitized solar cells containing bis-pendent sulfonate groups: Synthesis, characterization and solar cell performance
| Autor: | Anjali S. Rajbhoj, Suresh T. Gaikwad, Abdullah M. Asiri, Sultan A. Al-horaibi, Reda M. El-Shishtawy |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Squaraine dye 010405 organic chemistry Organic Chemistry Chromophore 010402 general chemistry Photochemistry 01 natural sciences 0104 chemical sciences Analytical Chemistry law.invention Inorganic Chemistry chemistry.chemical_compound Dye-sensitized solar cell chemistry Benzothiazole law Indoline Solar cell HOMO/LUMO Spectroscopy Alkyl |
| Zdroj: | Journal of Molecular Structure. 1195:591-597 |
| ISSN: | 0022-2860 |
| DOI: | 10.1016/j.molstruc.2019.05.068 |
| Popis: | Two new symmetric squaraine sensitizers (SQTHZ and SQIND) carrying benzothiazole and indoline moieties as strong electron donating groups to inject the electron into the TiO2 nanoparticles were tested as DSSC. The theoretical calculations and absorption results show that the electron density of LUMO of SQTHZ is delocalized in the whole chromophore, leading to strong electronic coupling between SQTHZ sensitizer and the conduction band of TiO2. Furthermore, the presence of long alkyl chain with pendent bis-SO3- groups would inhibit recombination and decrease the dye aggregation. Interestingly, SQTHZ displayed UV–Vis and NIR absorption at a longer wavelength compared to SQIND. This structure feature, as well as optical properties, would lead to improved efficiency of dye-sensitized solar cell with overall better photovoltaic performance (η of 3.31%, Jsc of 7.65 mA/cm2, Voc of 0.59, ff of 0.71 and IPCE of 47% at 674 nm) compared to SQIND. |
| Databáze: | OpenAIRE |
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