HJT optics

This examples shows how to calibrate Quokka3's optical model, the extended Basore model, to measured reflection and EQE data of a HJT cell. In particular this results in the determination of the significant NIR parastic absorption loss in the a-Si and TCO layers using the Appp concept.

The investigated cell is a Fraunhofer ISE HJT cell. 

A paper on Appp including a detailed description of this example was submitted to SOLMAT.