Astaxanthin from Haematococcus pluvialis as a natural photosensitizer for dye-sensitized solar cell
| Autor: | Elisa Cepeda-Pérez, Diana L. Cárdenas-Chávez, Tzarara López-Luke, Iris Aguilar-Hernández, Melissa Marlene Rodríguez-Delgado, Andrea Cerdán-Pasarán, Nancy Ornelas-Soto, A. Orona-Navar |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Auxiliary electrode
Haematococcus pluvialis Materials science biology Open-circuit voltage 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry biology.organism_classification 01 natural sciences 0104 chemical sciences law.invention Dye-sensitized solar cell chemistry.chemical_compound chemistry Astaxanthin law Solar cell Solar simulator 0210 nano-technology Agronomy and Crop Science Short circuit Nuclear chemistry |
| Zdroj: | Algal Research. 26:15-24 |
| ISSN: | 2211-9264 |
| DOI: | 10.1016/j.algal.2017.06.027 |
| Popis: | An extract of photosynthetic pigments from Haematococcus pluvialis was evaluated as sensitizer for solar cells. Nutrient-stressed H. pluvialis was cultured in a modified WC medium and harvested in the mature aplanospore stage. A crude extract was obtained and purified by column chromatography, rendering a primary purified extract (PPE). A comparison between PPE and a pure astaxanthin standard (AS), applied as sensitizers to TiO 2 film photoelectrodes, was carried out. The dye-sensitized solar cell (DSSC) was assembled under a sandwich scheme, where the photoelectrode faced the platinum counter electrode and an iodide electrolyte solution was between them. Photoelectric conversion efficiency was measured using a solar simulator under a single sunlight intensity (100 mW cm − 2 ). The photoelectrode sensitized with PPE showed higher efficiency (0.1%), fill factor (0.72), open circuit voltage (0.449 V) and short circuit current density (0.313 mA/cm 2 ) than those with AS. The increased efficiency obtained using a PPE was attributed to a broader absorption range in the visible region, as well as the thorough internalization and distribution of the molecules in the mesoporous semiconductor (TiO 2 ). Results indicated that the use of semi-purified extracts allows time and costs reduction of the production process for dye-sensitized solar cells applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect