Observation of an ultraviolet emission band in TiO2 nanocrystals doped with Eu3+
Source abstract
Abstract
The photoluminescence spectra of titanium dioxide (TiO2) nanocrystals doped with Eu3+ (molar ratio Eu3+/TiO2 = 0, 1, 2, 4%) are investigated under different excitation wavelengths. An ultraviolet band of emission energy higher than the energy gap is found for excitation wavelengths larger than 315 nm when the Eu3+ content is higher than 2%. The new emission band redshifts and its emission intensity is intensified with the increase of excitation wavelength. The emission mechanism for the new ultraviolet emission band is analyzed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (16)
Show source-provided references
1. Linsebigler AL, Lu G, Yates JT Jr (1995) Chem Rev 95:73510.1021/cr00035a013 ↗
2. Ting CC, Chen SY, Hsieh WF, Lee HY (2001) J Appl Phys 90:556410.1063/1.1413490 ↗
3. Hirendra NG, Soumyakanti A (2001) Langmuir 17:412910.1021/la010062i ↗
4. Gu F, Wang SF, Song CF, Lv MK, Qi YX, Zhou GJ, Xu D, Yuan DR (2003) Chem Phys Lett 372:45110.1016/S0009-2614(03)00440-8 ↗
5. Liu Y, Claus RO (1997) J Am Chem Soc 119:527310.1021/ja970587q ↗
6. Avelino C, Hermenegildo G, Maria TN, Emilio JP, Fernando R (2000) Chem Mater 12:306810.1021/cm000303s ↗
7. Tang H, Berger H, Schmid PE, Levy F, Burri G (1993) Solid State Commun 87:84710.1016/0038-1098(93)90427-O ↗
8. Lin J, Yu JC (1998) J Photochem Photobio A: Chem 116:6310.1016/S1010-6030(98)00289-5 ↗
9. Zhang WF, Zhang MS, Yin Z, Chen Q (2000) Appl Phys B 70:26110.1007/s003400050043 ↗
10. Harish P, Anjiana D, Raghunandan B, Roland AF (2002) J Mater Chem 12:162510.1039/b202767d ↗
11. Frindell KL, Bartl MH, Popitsch A, Stucky GD (2002) Angew Chem 114:100110.1002/1521-3757(20020315)114:6<1001::AID-ANGE1001>3.0.CO;2-8 ↗
12. Asahi R, Taga Y, Mannstadt W, Freeman AJ (2000) Phys Rev B 61:745910.1103/PhysRevB.61.7459 ↗
13. Daude N, Gout C, Jouanin C (1977) Phys Rev B 15:322910.1103/PhysRevB.15.3229 ↗
14. Serpone N, Lawless D, Khairutdinov R (1995) J Phys Chem 99:1664610.1021/j100045a026 ↗
15. Chen QW, Zhu DL, Zhang YH (2000) Appl Phys Lett 77:85410.1063/1.1306396 ↗
16. Chen QW, Li X, Zhang Y (2001) Chem Phys Lett 343:50710.1016/S0009-2614(01)00762-X ↗