PERC silicon PV infrared to ultraviolet optical model

Optical modeling of aluminum back surface field (Al-BSF) and passivated emitter and rear contact (PERC) silicon wafer solar cells are extended into the infrared wavelength range (300–2500 nm). The model incorporates ray tracing to account for pyramidal texture of the front silicon surface, free carrier absorption in the front emitter; bulk silicon wafer, BSF; and Lambertian scattering at the silicon back contact. Total reflectance of pyramidal textured cells with different contact geometries with and without encapsulation are simulated. Simulated reflectance and short circuit current density match well with experimental values. These physics-based optical models serve as input for evaluating optical and thermal management strategies for silicon wafer solar cells.

National Renewable Energy Laboratory (NREL), University of Toledo

Indra Subedi and Timothy J. Silverman and Michael G. Deceglie and Nikolas J. Podraza

Solar Energy Materials and Solar Cells

Infrared reflectance,PERC cells,Ray tracing,Scattering,Silicon solar cell,Thermal management

2020

9

10.1016/j.solmat.2020.110655

09270248

110655

Elsevier B.V.

215