1. Schulich Faculty of Chemistry, Solid State Institute and the Hellen Diller Center, Russell Burry Nanotechnology Institute, Grand Technion Energy Program, Technion−Israel Institute of Technology, Haifa 3200003, Israel
2. Department of Chemistry and the Molecular Engineering Materials Center, University of Washington, Seattle, Washington 98195-1700, United States
3. Optical Materials Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland