Efficiency Enhancement of Organic and Thin-Film Silicon Solar Cells with Photochemical Upconversion
| Autor: | Burkhard Fückel, Bernd Stannowski, Tony Khoury, Alexander Colsmann, Klaus Lips, Timothy W. Schmidt, Jens Czolk, Rowan W. MacQueen, T. F. Schulze, Yuen Yap Cheng, Maxwell J. Crossley, Uli Lemmer |
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| Rok vydání: | 2012 |
| Předmět: |
Amorphous silicon
Materials science integumentary system Organic solar cell business.industry food and beverages Hybrid solar cell Quantum dot solar cell Photochemistry Polymer solar cell Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Multiple exciton generation chemistry.chemical_compound General Energy chemistry law biological sciences Solar cell Optoelectronics Plasmonic solar cell Physical and Theoretical Chemistry business |
| Zdroj: | The Journal of Physical Chemistry C. 116:22794-22801 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | The efficiency of thin-film solar cells with large optical band gaps, such as organic bulk heterojunction or amorphous silicon solar cells, is limited by their inability to harvest the (infra)red part of the solar spectrum. Photochemical upconversion based on triplet–triplet annihilation (TTA-UC) can potentially boost those solar cells by absorbing sub-bandgap photons and coupling the upconverted light back into the solar cell in a spectral region that the cell can efficiently convert into electrical current. In the present study we augment two types of organic solar cells and one amorphous silicon (a-Si:H) solar cell with a TTA-upconverter, demonstrating a solar cell photocurrent increase of up to 0.2% under a moderate concentration (19 suns). The behavior of the organic solar cells, whose augmentation with an upconverting device is so-far unreported, is discussed in comparison to a-Si:H solar cells. Furthermore, on the basis of the TTA rate equations and optical simulations, we assess the potential of T... |
| Databáze: | OpenAIRE |
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