Search documents

Browse topics

Document details

Internal Rear Reflectance at Lambertian Light Trapping in Textured Si Solar Cells
L. Abenante, M. Izzi
Simulation, Modelling / Modeling, Optical Properties, Solar Cells
New Materials and Concepts for Photovoltaic Devices
Subtopic: Fundamental Studies
Event: 36th European Photovoltaic Solar Energy Conference and Exhibition
Session: 1BV.3.5
61 - 63
ISBN: 3-936338-60-4
Paper DOI: 10.4229/EUPVSEC20192019-1BV.3.5
0,00 EUR
Document(s): paper


We insert the expression of Gee for internal front reflectance at Lambertian optics into an expression for sub-bandgap rear reflectance, B, obtained from the expression for sub-bandgap total reflectance of Basore. In the Basore expression, free-carrier absorption (FCA) can be included. If FCA is included, then B is calculated for intrinsic Si. If FCA is not included, then B is calculated for doped Si. We calculate curves for B vs. wavelength in two reported textures cells with Al rear reflector. In both devices, B-curves including FCA agree at sub-bandgap wavelengths with the Al-reflectance curve as calculated using the Fresnel equations.