1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources Beijing Key Laboratory of Energy Safety and Clean Utilization North China Electric Power University Beijing 102206 China
2. State Key Laboratory of Photovoltaic Science and Technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of Optoelectronics Fudan University Shanghai 200433 P. R. China
3. Thin Film PV Technology Imec imo‐imomec Thor Park 8320 Genk 3600 Belgium
4. EnergyVille imo‐imomec Thor Park 8320 Genk 3600 Belgium
5. Hasselt University imo‐imomec Martelarenlaan 42 Hasselt 3500 Belgium