N-type solar-grade silicon purified via the metallurgical route: characterisation and fabrication of solar cells
| Autor: | Thomas Schutz-Kuchly, Yannick Veschetti, V. Sanzone |
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| Rok vydání: | 2012 |
| Předmět: |
Fabrication
Materials science Silicon Renewable Energy Sustainability and the Environment Metallurgy Energy conversion efficiency technology industry and agriculture chemistry.chemical_element Carrier lifetime Condensed Matter Physics Electronic Optical and Magnetic Materials Monocrystalline silicon chemistry Electrical resistivity and conductivity Wafer Electrical and Electronic Engineering Ingot |
| Zdroj: | Progress in Photovoltaics: Research and Applications. 21:1214-1221 |
| ISSN: | 1062-7995 |
| Popis: | This study focuses on the characterisation and the fabrication of solar cells using n-type multicrystalline silicon purified via the metallurgical route. Electrical and chemical analyses were performed on wafers taken from several positions along the crystallised ingot. The impact of the fabrication processing steps was investigated via effective carrier lifetime measurements. Solar cells were processed, and their efficiencies were found to be dependent on the position of the wafer along the ingot height, that is, the wafer's resistivity. A maximum conversion efficiency of 15.0% was obtained on cells from the bottom part of the ingot. In this study, the minimum resistivity value of 0.4 Ω cm resistivity is given in order to reach adequate cell efficiency. Light-soaking experiments were then performed on the fabricated cells. No significant variations of the cell performances were observed even after 110 h at 60 °C, meaning that the fabricated cells are stable under illumination. Copyright © 2012 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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