Eu3+ and Sm3+ co-activated aluminum germanate glass channel waveguide as irradiation source for photodynamic therapy
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
---|---|
Pages (from-to) | 77-82 |
Journal / Publication | Journal of Luminescence |
Volume | 137 |
Publication status | Published - 2013 |
Link(s)
Abstract
A bright and compact orangish-red fluorescence trace is observed in an Eu3+/Sm3+ co-doped K+Na+ ion-exchanged aluminum germanate (NMAG) glass channel waveguide under excitation with a 488 nm Ar+ laser. The excitation wavelength range and the emission intensity of Eu3+ in NMAG glass are remarkably improved by the sensitization of Sm3+, and the energy transfer probability and efficiency are calculated to be 151.2 s-1 and 25.3%, respectively. Meanwhile, the energy transferred from Sm3+ can be efficiently utilized to generate intense fluorescence of Eu3+ due to the large spontaneous emission probabilities of the Eu3+: 5D 0→7FJ (J=1, 2, and 4) transitions that reach up to 68.9, 364.7, and 152.6 s-1, respectively. Enhanced fluorescence in the Eu3+/Sm3+-doped NMAG glass channel waveguide, which matches the excitation band of most photosensitizers, holds great promise for photodynamic therapy. © 2012 Elsevier B.V.
Research Area(s)
- Channel waveguide, PDT irradiation source, Photoluminescence, Sm3+/Eu3+ co-doping
Citation Format(s)
Eu3+ and Sm3+ co-activated aluminum germanate glass channel waveguide as irradiation source for photodynamic therapy. / Liu, X.; Chen, B. J.; Pun, E. Y B et al.
In: Journal of Luminescence, Vol. 137, 2013, p. 77-82.
In: Journal of Luminescence, Vol. 137, 2013, p. 77-82.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review