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«Apparent» Absorption Coefficient for Long-Wavelength Optical Modelling of Si Solar Cells
L. Abenante
Modelling / Modeling, Optical Properties
Wafer-Based Silicon Solar Cells and Materials Technology
Subtopic: Mono- and Multicrystalline Silicon Materials and Cells
Event: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain
Session: 2CV.3.65
2311 - 2313
ISBN: 3-936338-26-4
Paper DOI: 10.4229/25thEUPVSEC2010-2CV.3.65
0,00 EUR
Document(s): paper


Quantum efficiency is modeled as a product of collection efficiency, absorptance at ray-path angle with respect to the surface normal equal to 0°, and a factor accounting for a possible absorption enhancement due to diffusion of internal light alone. This modeling allows deriving an expression for an «apparent» absorption coefficient that only accounts for the possible absorption enhancement that does not depend on diffusion of internal light. By exploiting the numerical simulation program PC1d, the formula is successfully checked in two actual n+pp+ Si solar cells.