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app:sinw [2018/02/02 11:32] pklapetek |
app:sinw [2018/08/30 10:12] pklapetek |
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| As an example of numerical results here we show resulting time averaged spatial distribution of absorption in single column structure illuminated from top (left) and bottom (right), for 500 nm illumination wavelength. Visualisation was performed using Paraview. | As an example of numerical results here we show resulting time averaged spatial distribution of absorption in single column structure illuminated from top (left) and bottom (right), for 500 nm illumination wavelength. Visualisation was performed using Paraview. | ||
| {{ :app:j_sinw_individuals.png?500 |}} | {{ :app:j_sinw_individuals.png?500 |}} | ||
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| Similar calculation can be performed for any wavelength within range of our optical data (and reasonable ratio between wavelength and voxel spacing). Here a set of simulation snapshots for different wavelengths is shown for single column structure illuminated from bottom: | Similar calculation can be performed for any wavelength within range of our optical data (and reasonable ratio between wavelength and voxel spacing). Here a set of simulation snapshots for different wavelengths is shown for single column structure illuminated from bottom: | ||
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| If we run full spectral calculation, we can get also dependences of summed local absorption in different parts of the solar cell, for distinct materials. A preliminary result for bottom illuminated regular structure is shown below (note that number of steps for longer wavelengths was too small for reaching steady state). Spectral calculations using optical database are performed for each wavelength separately, so this type of calculations is already computationally demanding - we had used CMI high performance computing system for these preliminary calculations. | If we run full spectral calculation, we can get also dependences of summed local absorption in different parts of the solar cell, for distinct materials. A preliminary result for bottom illuminated regular structure is shown below (note that number of steps for longer wavelengths was too small for reaching steady state). Spectral calculations using optical database are performed for each wavelength separately, so this type of calculations is already computationally demanding - we had used CMI high performance computing system for these preliminary calculations. | ||
| + | {{ :app:j_sinw_multiple.png?600 |}} | ||
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| + | Geometrical model can be made even more complex, e.g. by adding scanning probe microscope tip to the structure. This geometry is similar to what we use in photoconductive AFM measurements. After adding simple tetrahedral tip we get the volume absorption like shown belos: (left) geometry, (center) 400 nm illumination, (right) 600 nm illumination: | ||
| + | {{ :app:j_sinw_probe.png?600 |}} | ||
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| + | ---- | ||
| + | // | ||
| + | {{ :app:img_silicon_nanowire.png?80|}} | ||
| + | Sample parameter file: {{app:silicon_nanowire.tar.gz|silicon nanowire}}. | ||
| + | \\ | ||
| + | A simulation of a single silicon nanowire composed of multiple different materials, illuminated from bottom. Absorption in different materials is evaluated. | ||
| + | // | ||
| + | ---- | ||
| - | Geometrical model can be made even more complex, e.g. by adding scanning probe microscope tip to the structure. This geometry is similar to what we use in photoconductive AFM measurements. After adding simple tetrahedral tip we get this snapshot and volume absorption (tip only sketched on absorption image). | ||
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| - | The same model 3D view including better probe sketch is shown below: (left) geometry, (center) 400 nm illumination, (right) 600 nm illumination, | + | === Reference === |
| [1] A. Fejfar, M. Hývl, A. Vetushka, P. Pikna, Z. Hájková, M. Ledinský, J. Kočka, P. Klapetek, A. Marek, A. Mašková, J. Vyskočil, J. Merkel, C. Becker, T. Itoh, S. Misra, M. Foldyna, LW. Yu, P. R. I Cabarrocas, Correlative microscopy of radial junction nanowire solar cells using nanoindent position markers, Solar Energy Materials and Solar Cells 135 (2015) 106-112 | [1] A. Fejfar, M. Hývl, A. Vetushka, P. Pikna, Z. Hájková, M. Ledinský, J. Kočka, P. Klapetek, A. Marek, A. Mašková, J. Vyskočil, J. Merkel, C. Becker, T. Itoh, S. Misra, M. Foldyna, LW. Yu, P. R. I Cabarrocas, Correlative microscopy of radial junction nanowire solar cells using nanoindent position markers, Solar Energy Materials and Solar Cells 135 (2015) 106-112 | ||
app/sinw.txt · Last modified: 2018/08/30 10:12 by pklapetek
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