1. Graduate School of Global Environmental Studies
2. Kyoto University
3. 606-8501 Kyoto
4. Japan
5. Graduate School of Arts and Sciences
6. Faculty of Applied Sciences
7. Luminescence Materials Research group (FAME-LMR)
8. Department of Radiation Science and Technology
9. Delft University of Technology
10. 2629 JB Delft
11. Institut de Recherche de Chimie-Paris
12. CNRS – Chimie-ParisTech
13. 75231 Paris Cedex 05
14. France