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EnglishThe photoluminescence of Ce3+, Tb3+ and Mn2+ ions was investigated in the Zn(PO3)(2) glass. The blue and green emissions of Tb3+ ions and the red emission of Mn2+ ions are enhanced upon UV excitation through a non-radiative energy transfer from Ce3+ to Th3+ and Mn2+ ions. The efficiency of this transfer was estimated in at least 62%. It is demonstrated that this glass activated with three ions (Ce3+, Tb3+ and Mn2+) can generate white light emission (x = 0.420 and y = 0.423 chromaticity coordinates and 3440 K colour temperature) under excitation at 254 nm, i.e., using an AlGaN-based LED as excitation source.
| Titolo: | White light generation through the zinc metaphosphate glass activated by Ce3+, Tb3+ and Mn2+ ions |
| Autori: | |
| Data di pubblicazione: | 2009 |
| Rivista: | |
| Abstract: | The photoluminescence of Ce3+, Tb3+ and Mn2+ ions was investigated in the Zn(PO3)(2) glass. The blue and green emissions of Tb3+ ions and the red emission of Mn2+ ions are enhanced upon UV excitation through a non-radiative energy transfer from Ce3+ to Th3+ and Mn2+ ions. The efficiency of this transfer was estimated in at least 62%. It is demonstrated that this glass activated with three ions (Ce3+, Tb3+ and Mn2+) can generate white light emission (x = 0.420 and y = 0.423 chromaticity coordinates and 3440 K colour temperature) under excitation at 254 nm, i.e., using an AlGaN-based LED as excitation source. |
| Handle: | http://hdl.handle.net/11562/340029 |
| Appare nelle tipologie: | 01.01 Articolo in Rivista |
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