Temperature and Intensity Dependence of the Limiting Efficiency of Silicon Solar Cells
| Autor: | Thomas Tiedje, D. Akira Engelbrecht |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Silicon Band gap chemistry.chemical_element 02 engineering and technology Air mass (solar energy) 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 7. Clean energy Molecular physics Power law Electronic Optical and Magnetic Materials chemistry 0103 physical sciences Surface roughness Spontaneous emission Electrical and Electronic Engineering 0210 nano-technology Absorption (electromagnetic radiation) Temperature coefficient |
| Zdroj: | IEEE Journal of Photovoltaics. 11:73-84 |
| ISSN: | 2156-3403 2156-3381 |
| Popis: | The temperature and intensity dependence of the limiting efficiencies of monofacial and bifacial silicon solar cells are calculated from the physical properties of silicon assuming light trapping by Lambertian scattering from rough surfaces. The maximum efficiency of a bifacial cell (28.92%) is lower than the efficiency of a monofacial cell (29.46%) at room temperature and Air Mass 1.5 Global illumination. The effects of electron–electron interactions on the band gap, radiative recombination rate, and optical absorption are included self-consistently. The temperature coefficient of the output power is −0.23%/°C for the optimum thickness monofacial cell at room temperature. The optimum thickness of silicon solar cells decreases strongly with temperature following a power law ${{\boldsymbol{T}}^{ - 7}}$ and thin cells have a lower temperature coefficient than thick cells. A surface recombination velocity of 1 cm/s is found to be a turning point below which surface recombination has a small effect on the efficiency. |
| Databáze: | OpenAIRE |
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