1. Materials Science and Nanotechnology Program Department of Physics Faculty of Science Khon Kaen University Khon Kaen Thailand
2. Synchrotron Light Research Institute (Public Organization) Nakhon Ratchasima Thailand
3. Department of Physics Hokkaido University Sapporo Japan
4. Institute of Nanomaterials Research and Innovation for Energy (IN‐RIE) NANOTEC‐KKU RNN on Nanomaterials Research and Innovation for Energy Khon Kaen University Khon Kaen Thailand