[1] Tech Univ Darmstadt, Inst Mat Sci, Alarich Weiss Str, Darmstadt, Germany
[2] Swiss Fed Inst Technol, Dept Chem & Appl Biosci, Lab Inorgan Chem, CH-8093 Zurich, Switzerland
[3] Empa Swiss Fed Labs Mat Sci & Technol, Lab Thin Films & Photovolta, CH-8600 Dubendorf, Switzerland
[4] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
[5] Univ Stuttgart, Inst Photovolta ipv, Pfaffenwaldring 47, D-70569 Stuttgart, Germany
[6] Forschungszentrum Julich, Helmholtz Young Investigator Grp FRONTRUNNER, IEK5 Photovoltaik, D-52425 Julich, Germany
[7] Zhejiang Univ, Int Res Ctr forPolymers 10, Dept Polymer Sci & Engn, State Key Lab Silicon Mat, Hangzhou, Peoples R China
[8] Univ Strasbourg, CNRS, UMR 7006, ISIS, Strasbourg, France
[9] Ludwig Maximilians Univ LMU, Nanoinst Munchen & Fak Phys, Lehrstuhl Photon & Optoelekt, Koniginstr 10, D-80539 Munich, Germany