| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5404354 | Journal of Luminescence | 2006 | 9 Pages |
Abstract
Eu3+ and Tb3+ ions doped into LnCOB show efficient luminescence under VUV and UV irradiation. In this system, Ce3+ ions do not show efficient luminescence and quench the luminescence of Tb3+ ions when Tb3+ and Ce3+ ions are co-doped into LnCOB. GdCOB doped with Dy3+ shows yellowish white light under irradiation of 254Â nm light for the reason that Gd3+ ions transfer the energy from itself to Dy3+. Because of the existence of Gd3+, the samples of GdCOB:RE3+ show higher excitation efficiency than LaCOB:RE3+ and YCOB:RE3+, around 188Â nm, which indicates that the Gd3+ ions have an effect on the host absorption and can transfer the excitation energy to the luminescent center such as Tb3+, Dy3+ and Eu3+.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
H.C. Yang, C.Y. Li, H. He, Y. Tao, J.H. Xu, Q. Su,