1. Solution-Processing of Hybrid Materials and Devices, Helmholtz-Zentrum Berlin für Materialen und Energie GmbH and Humboldt University Berlin, 14109 Berlin, Germany
2. Chemical Physics and NanoLund, Lund University, 22362 Lund, Sweden
3. Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China