ABSTRACT
We investigate the electrical transport properties of Cu(In,Ga)Se2 single crystals, thin films and solar cells by the analysis of the temperature dependent DC- and AC-conductance. Persistent Photoconductivity was found up to room temperature in single crystals as well as in polycrystalline thin films. Solar cells based on Cu(In,Ga)Se2 absorber material display also a metastability in their admittance spectra. Despite the different preparation techniques for the single crystals on the one hand and the thin films and solar cells on the other hand we find a related metastability in their electrical properties.
