1. National Renewable Energy Laboratory, Golden, Colorado 80401, United States
2. Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
3. Key Laboratory
for Computational Physical Sciences (MOE), State Key Laboratory of
Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
4. Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
5. Beijing Computational Science Research Center, Beijing 100094, China