Layered co-sensitization of gardenia and monascus for panchromatic light harvesting in dye-sensitized solar cells
| Autor: | Oh Oun Kwon, Sang-Wook Kim, Kyung-Hee Park, Tae-Young Kim, Jae-Wook Lee, Jung-Hun Kim, Hyo Jung Lee |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
biology Energy conversion efficiency Condensed Matter Physics Electrochemistry Monascus biology.organism_classification Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Dye-sensitized solar cell Adsorption Gardenia Hardware and Architecture law Solar cell Electrical and Electronic Engineering Natural dye Nuclear chemistry |
| Zdroj: | Photonics and Nanostructures - Fundamentals and Applications. 14:71-76 |
| ISSN: | 1569-4410 |
| DOI: | 10.1016/j.photonics.2015.01.007 |
| Popis: | TiO 2 electrodes adsorbed with two natural dyes (gardenia yellow and monascus) were used as sensitizers to improve the conversion efficiency of cocktail dye-sensitized solar cells (CDSC) for light harvesting over a wide range of wavelength. Adsorption and electrochemical properties of two dyes were evaluated based on adsorption kinetics and electrochemical measurements. In addition, the photovoltaic performance of a photo-electrode adsorbed with single-dye (gardenia yellow and monascus) or the mixture or successive adsorption of the two dyes, was evaluated from current–voltage measurements. Layered co-sensitization of the two natural dyes was compared depending on the adsorption modes. As for the TiO 2 electrode with successive adsorption of monascus and gardenia yellow dyes, the solar cell yields a short-circuit current density ( J sc ) of 2.04 mA/cm 2 , a photovoltage ( V oc ) of 0.63 V, and a fill factor of 0.64, corresponding to an energy conversion efficiency ( η ) of 0.82%. |
| Databáze: | OpenAIRE |
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