Properties of Cu(In,Ga)Se-2 solar cells with new record efficiencies up to 21.7%

We report on a new thin-film Cu(In,Ga)Se-2 (CIGS) solar cell record efficiency of 21.7%. In order to better understand this newest development, we describe the specific solar cell data as obtained from I-V measurement and diode analysis, quantum efficiency and secondary neutral mass spectrometry measurements. We hope that such a description will help to exploit the potential of this promising thin-film solar technology even further. ((c) 2015 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim)