Color - tunable photoluminescence and energy transfer of (Tb1-xMnx)3Al2(Al1-xSix)3O12:Ce3+ solid solutions for white light emitting diodes
| Parent link: | RSC Advances.— , 2011- Vol. 8, iss. 63.— 2018.— [P. 36056-36062] |
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| organizacja autorów: | , |
| Kolejni autorzy: | , , , , , , , |
| Streszczenie: | Title screen (Tb1−xMnx)3Al2(Al1−xSix)3O12:Ce3+ solid solution phosphors were synthesized by introducing the isostructural Mn3Al2(SiO4)3 (MAS) into Tb3Al5O12:Ce3+ (TbAG). Under 456 nm excitation, (Tb1-xMnx)3Al2(Al1-xSix)3O12:Ce3+ shows energy transfers (ET) in the host, which can be obtained from the red emission components to enhance color rendering. Moreover, (Tb1-xMnx)3Al2(Al1-xSix)3O12:Ce3+ (x=0-0.2) exhibits substantial spectral broadening (68 -> 86 nm) due to the 5d -> 4f transition of Ce3+ and the 4T1 -> 6A1 transition of Mn2+. The efficiency of energy transfer ([tau]T, Ce3+ -> Mn2+) gradually increases with increasing Mn2+ content, and the value reach approximately 32% at x=0.2. Namely, the different characteristics of luminescence evolution based on the effect of structural variation by substituting the (MnSi)6+ pair for the larger (TbAl)6+ pair. Therefore, with structural evolution, the luminescence of the solid solution phosphors could be tuned from yellow to orange-red, tunable by increasing the content of MAS for the applications of white light emitting diodes (wLED). Режим доступа: по договору с организацией-держателем ресурса |
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2018
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| Hasła przedmiotowe: | |
| Dostęp online: | https://doi.org/10.1039/C8RA07994C |
| Format: | Elektroniczne Rozdział |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664138 |