AFORS-HET: a computer-program for the simulation of heterojunction solar cells to be distributed for public use

We offer a numerical simulation tool, AFORS-HET, for public use, which allows to model homo- as well as heterojunction devices. AFORS-HET is the short form of automat for simulation of heterostructures and can be downloaded via the internet: http://www.hmi.de/bereiche/SE/SE1/projects/aSicSi/AFORS-HET. An arbitrary sequence of semiconducting layers can be modelled. A variety of boundary conditions can be chosen. The program solves the one dimensional semiconductor equations in steady-state and for small sinusoidal ac-perturbations. Furthermore, a variety of common characterisation techniques have been implemented, current-voltage (I-V), internal quantum efficiency (IQE), impedance, capacitance (CV, CT), static surface photovoltage (SPV), electron beam induced current (EBIC) and photoluminescence (PL). A user-friendly interface allows to easily perform parameter variations, and to visualise and compare your simulations.