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Light-scattering effectiveness of two-dimensional disordered surface textures in thin-film silicon solar cells
- Source :
- Applied Optics; May 2014, Vol. 53 Issue: 13 p2847-2852, 6p
- Publication Year :
- 2014
-
Abstract
- To compare the light-scattering effectiveness of surface-textured solar cells of various design parameters such as density, diameter, refractive index, and location, this study used a new parameter, optical path length gain (OPLG), that is more sensitive than Haze. By modeling two-dimensional disordered textures as a structure that comprises many randomly distributed, small, spherical scatterers, ray-tracing simulations of surface-textured thin-film silicon solar cells were performed. The simulation results suggest that: (1) the optimal scatterer diameter for hydrogenated amorphous silicon (a-Si:H) solar cells is ∼50 nm, producing an average OPLG of 3.5; and (2) the optimal scatterer diameter for a-Si:H/μc-Si:H (hydrogenated microcrystalline silicon) tandem cells is ∼75 nm, producing an average OPLG of 3.4 and an increase in the bandwidth of the absorption spectrum of 14.5%.
Details
- Language :
- English
- ISSN :
- 1559128X and 21553165
- Volume :
- 53
- Issue :
- 13
- Database :
- Supplemental Index
- Journal :
- Applied Optics
- Publication Type :
- Periodical
- Accession number :
- ejs32719675