In-homogeneous luminescent coupling; multi-junction solar cell; non-uniform irradiation; temperature distribution; quasi-3D circuit model

The luminescent coupling effect in practical multi-junction solar cell is spatially in-homogeneous even under uniform irradiation and temperature distribution. The spacial inhomogeneity of luminescent coupling is modeled and simulated under various scenarios. Quasi 3-D equivalent model of tandem solar cell is extended to adapt to temperature dependent luminescent coupling. Vertical current of each region of the cell is dominated by temperature or irradiation.