Efficiency (>15%) for thin-film epitaxial silicon solar cells on 70 cm2 area offspec silicon substrate using porous silicon segmented mirrors
| Autor: | I. Kuzma-Filipek, Stefan Reber, Maria Recaman Payo, Guy Beaucarne, R. Mertens, Kris Van Nieuwenhuysen, Evelyn Schmich, Stefan Lindekugel, Emmanuel Van Kerschaver, Jef Poortmans, Jan Van Hoeymissen |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Silicon Renewable Energy Sustainability and the Environment Hybrid silicon laser business.industry chemistry.chemical_element Substrate (electronics) Condensed Matter Physics Porous silicon Electronic Optical and Magnetic Materials law.invention Monocrystalline silicon Optics chemistry law Solar cell Optoelectronics Electrical and Electronic Engineering Thin film business Layer (electronics) |
| Zdroj: | Progress in Photovoltaics: Research and Applications. 18:137-143 |
| ISSN: | 1062-7995 |
| DOI: | 10.1002/pip.953 |
| Popis: | We report on the beneficial use of embedded segmented porous silicon broad-band optical reflectors for thin-film epitaxial silicon solar cells. These reflectors are formed by gradual increase of the spatial period between the layer segments, allowing for an enhanced absorption of low energy photons in the epitaxial layer. By combining these reflectors with well-established solar cell processing by photolithography, a conversion efficiency of 15·2% was reached on 73 cm2 area, highly doped offspec multicrystalline silicon substrates. The corresponding photogenerated current densities (Jsc) were well above 31 mA/cm2 for an active layer of only 20 µm. Copyright © 2010 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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