Detailed 3D Optical Modelling of Interdigitated Back Contact Solar Cells

A development and calibration of a detailed 3D coupled ray-wave optical model for accurate simulations of laterally varying photovoltaic structures is presented and applied for the analysis of interdigitated back contact cells. Four key aspects, which predominantly contribute to the accuracy of optical simulations are highlighted through the validation of the model. The applicability of the model is demonstrated through an example of electroluminescence simulations.