1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore
2. School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
3. Noyes Laboratory, California Institute of Technology, Pasadena, California 91125, United States
4. Theoretical Division and Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
5. Nanoscience and Nanotechnology Graduate Program, Faculty of Science, King Mongkut’s University of Technology Thonburi (KMUTT), Bangkok 10140, Thailand
6. Theoretical and Computational Science Center (TaCS), KMUTT, Bangkok 10140, Thailand
7. Chemistry and Nanoscience Science Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States