Optimizing Bifacial Silicon Heterojunction Solar Cells for High-Latitude

Bifacial silicon heterojunction solar cells are modelled via 2D optoelectronic simulations in Synopsys TCAD Sentaurus to optimize and characterize cell performance in regions of high latitude with high average air mass and increased angles of incidence. Device structure, such as amorphous silicon layer thickness and doping, is being optimized for bifacial illumination conditions representative of the Canadian High Arctic, with independent spectra illuminating the front and rear faces of the cell. The present cell structure has an efficiency of 20.3% under front-face illumination with AM1.5G. Cell performance will be optimized via improvements in the antireflection coating, surface texturing, doping, and layer thicknesses.