Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 113, Issue 20, Pages 8772-8777Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp901862k
Keywords
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Funding
- Chinese Academy of Sciences
- NSFC [10774143, 10804106]
- 973 program [2007CB936703]
- Science and Technology Foundation of Fujian Province [200710024]
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A sol-gel solvothermal method was introduced to incorporate Nd3+ and Sm3+ ions into TiO2 nanoparticles. Intense and well-resolved emission lines from Nd3+ or Sm3+ ions were realized upon excitation above the TiO2 bandgap at room temperature. The sensitized emissions of Nd3+ or Sm3+ were found to be much more efficient than a direct excitation of lanthanide ions (Ln(3+)). Multiple site emissions of Nd3+ and Sm3+ were detected by means of site-selective spectroscopy at 10 K. Moreover, a possible host-to-Ln(3+) sensitization mechanism was proposed.
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