Porphyrins with intense absorptivity: highly efficient sensitizers with a photovoltaic efficiency of up to 10.7% without a cosensitizer and a coabsorbate
| Autor: | Jingbo Lan, Liang Luo, Ruyong Jiang, Di Wu, Chengming Li, Luyi Huang, Jingsong You, Ruilin Wang, Shengyong Yang |
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| Rok vydání: | 2016 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry Oscillator strength business.industry Photovoltaic system 02 engineering and technology General Chemistry Molar absorptivity 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Porphyrin 0104 chemical sciences chemistry.chemical_compound Dye-sensitized solar cell Absorption band Optoelectronics General Materials Science 0210 nano-technology business Overall efficiency |
| Zdroj: | Journal of Materials Chemistry A. 4:11829-11834 |
| ISSN: | 2050-7496 2050-7488 |
| Popis: | It is significantly challenging to collect more light and simultaneously avoid dye aggregation in dye-sensitized solar cells (DSSCs). This work addresses the significance of the intensity, rather than just the traditionally emphasized broadness, of the absorption band in developing DSSC sensitizers. With the assistance of calculating the oscillator strength of the first transition, the indoline-conjugated porphyrin sensitizer CM-b is screened out to have an impressively large Qx molar absorptivity and thus an improved light harvesting ability together with suppressed aggregation in DSSCs. As a result, an overall efficiency of 10.7% for iodine-based DSSCs is achieved, which is a record for non-ruthenium iodine-based DSSCs in the absence of a cosensitizer and a coabsorbate. |
| Databáze: | OpenAIRE |
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