Developing a model for Multijunction Photovoltaic Cell which is coupled with a Fresnel Lens

I need a model to be developed for a solar system which consist of a CPV solar cell with a size of 10x10mm. The CPV cell will utilize a fresnel lens as a concentrator. The bottom of the CPV cell assembly is micro channel heat sink which will extract the heat produced by the CPV Cell. The model should be developed on COMSOL Multiphysics and it shall include both electrical and heat transfer physics.

In summary, I need to quantify the heat generated by cell and how is going to increase the temperature of the heat sink outlet. In addition, I need also to measure the electrical energy generated by the solar cell