Abstract
Two- and three-dimensional analyses of the distribution of optically generated charge carriers in textured crystalline silicon solar cells of arbitrary geometry have been performed. The simulation algorithm, developed for that purpose, is based on geometrical optics and ray tracing. It determines the dominant contributions to the optical generation within textured silicon exactly. The contribution of weakly absorbed long-wavelength photons is calculated using a Monte-Carlo simulation. The presented algorithm is fast and accurate and can also be used to calculate reflectance and transmittance spectra in excellent agreement with measurements. Two- and three-dimensional generation profiles in single- and double-sided textured solar cells are presented and discussed in detail. Examples for applications are given. Finally, the presented algorithm is compared with a pure Monte-Carlo algorithm.
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