Sr3Al2O5Cl2:Ce3+,Eu2+: A potential tunable yellow-to-white-emitting phosphor for ultraviolet light emitting diodes
Data(s) |
2009
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Resumo |
The Sr3Al2O5Cl2:Ce3+,Eu2+ phosphors were prepared by solid state reaction. The obtained phosphors exhibit a strong absorption in the UV-visible region and have two intense emission bands at 444 and 609 nm. The energy transfer from the Ce3+ to Eu2+ ions was observed, and the critical distance has been estimated to be about 24.5 A by spectral overlap method. Furthermore, the developed phosphors can generate lights from yellow-to-white region under the excitation of UV radiation by appropriately tuning the activator content, indicating that they have potential applications as an UV-convertible phosphor for white light emitting diodes. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Song YH;Jia G;Yang M;Huang YJ;You HP;Zhang HJ.Sr3Al2O5Cl2:Ce3+,Eu2+: A potential tunable yellow-to-white-emitting phosphor for ultraviolet light emitting diodes,APPLIED PHYSICS LETTERS ,2009,94 (9):文献编号:091902 |
Palavras-Chave | #ENERGY-TRANSFER #MN2+ #EU2+ #LUMINESCENCE #CE3+ #SR |
Tipo |
期刊论文 |