We offer the new (open source on demand) Version 2.2 of AFORS-HET, a numerical computer simulation program for modeling heterojunction solar cells and measurements. Within this version, several transient state measurements have been implemented. Furthermore, the interface models have been refined and a specific model for crystalline silicon has been implemented, taking the specific temperature and doping dependence of this material into account. Additionally, a multi-dimensional parameter optimization has been implemented, allowing for example to optimize several parameters in order to obtain the maximum solar cell efficiency. AFORS-HET will be distributed free of charge on CD-ROM at the conference site and can also be downloaded via internet: www.hmi.de/bereiche/SE/SE1/projects/aSicSi/AFORS-HET.

We offer the open-source on demand Version 1.2 of AFORS-HET, a numerical computer simulation program for modelling (thin film) heterojunction solar cells. It is distributed free of charge by download via internet: www. hmi.delbereiche/SE/SE 1 Iproiectsl~SicSilAFORS-H ET

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