Color-tunable light emission of SrLa4-x-ySi3O13:xTb3+, yEu3+ phosphors by energy transfer process for warm white LEDs
Source abstract
Abstract
SrLa4-x-ySi3O13: xTb3+, yEu3+ phosphor was prepared by high temperature solid-state method. The luminescent centers of Eu3+ and Tb3+ occupying La3+ lattice sites in hosts were confirmed by Rietevld refinement method. The phenomenon of self-cross-relaxation energy transfer is observed between Tb3+ ions from 5D4-7FJ to 7F6-5D4 transition. Additionally, the direction of energy transfer (ET) was observed from Tb3+ to Eu3+ ions, and ET efficiency became more efficient as the concentration of activator increases. The type of ET between Tb3+ and Eu3+ ions was demonstrated to be the dipole-dipole mechanism. The multi-color lights were realized covering the green to red visible region by the route of energy transfer. Furthermore, the decrease of Eu3+ emission intensity resulting from thermal quenching can be effectively compensated by Tb3+→Eu3+ ET. The excellent luminescent properties and thermal stability show this phosphor to be a promising candidate for white LEDs.
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Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Glass properties and applications · Solid State Laser Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Electronic Information and Engineering, Hangzhou Dianzi University 1 , Hangzhou 310018, China
Zhejiang Kaiyuan Photoelectric Lighting Technology Co., Ltd. 2 , Hangzhou 310018, China
College of Materials Science and Environment Engineering, Hangzhou Dianzi University 3 , Hangzhou 310018, China
Funding
Science and Technology Program of Zhejiang Province · National Natural Science Foundation of China
References (26)
Show source-provided references
1. Enhancement of red spectral emission intensity of Y3Al5O12: Ce3+ phosphor via Pr co-doping and Tb substitution for the application to white LEDs10.1016/j.jlumin.2006.08.093 ↗
2. Enhanced luminescence of Y3Al5O12: Ce3+ nanophosphor for white light-emitting diodes10.1063/1.2367657 ↗
3. Tailored photoluminescence of YAG: Ce phosphor through various methods10.1016/j.jpcs.2003.08.018 ↗
4. The energy transfer from Eu2+ to Tb3+, in calcium chlorapatite phosphor and its potential application in LEDs10.1007/s00340-008-3035-1 ↗
5. ChemInform abstract: Tunable full-color emitting BaMg2Al6Si9O30: Eu2+, Tb3+, Mn2+ phosphors based on energy transfer
6. Novel red-emitting Ba2Tb(BO3)2Cl: Eu phosphor with efficient energy transfer for potential application in white light-emitting diodes10.1021/ic300401z ↗
7. Tb3+ luminescence by energy transfer from Eu2+ in (Sr,Ba)2SiO4 phosphor
8. Vacuum ultraviolet−visible spectroscopic properties of Tb3+ in Li(Y, Gd)(PO3)4: Tunable emission, quantum cutting, and energy transfer10.1021/jp100755d ↗
9. High efficiency green phosphor Ba9Lu2Si6O24:Tb3+: Visible quantum cutting via cross-relaxation energy transfers10.1021/acs.jpcc.5b11790 ↗
10. Cation composition sensitive visible quantum cutting behavior in the high efficiency green phosphors Ca9Ln(PO4)7:Tb3+ (Ln=Y, La, Gd)
11. Luminescence color tuning of Ce3+, Tb3+ and Eu3+ codoped and tri-doped BaY2Si3O10 phosphors via energy transfer10.1039/c5tc00962f ↗
12. The quantum cutting of Tb3+ in Ca6Ln2Na2(PO4)6F2(Ln=Gd, La) under VUV-UV excitation: With and without Gd3+10.1021/ic101028n ↗
13. Bright green-emitting, energy transfer and quantum cutting of Ba3Ln(PO4)3: Tb3+ (Ln=La, Gd) under VUV-UV excitation10.1364/oe.19.011071 ↗
14. Visible quantum cutting through downconversion in GdPO4: Tb3+, and Sr3Gd(PO4)3: Tb3+10.1016/j.jssc.2009.05.026 ↗
15. Ca(Eu1-xLax)4Si3O13 red phosphor and its application to tri-chromatic white LEDs10.2150/jlve.28.73 ↗
16. Tunable emissions via the white region from Sr2Gd8(SiO4)6O2: RE3+ (RE3+: Dy3+, Tm3+, Eu3+) phosphors10.1039/c6nj00017g ↗
17. Recent developments in the new inorganic solid state LED phosphors10.1039/c6dt01230b ↗
18. Synthesis and spectroscopic investigations of Sr2Y8(SiO4)6O2: Eu2+, Eu3+, phosphor for white LEDs10.1016/j.jlumin.2014.09.033 ↗
19. Study of the cation distributions in Eu doped Sr2Y8(SiO4)6O2 by x-ray diffraction and photoluminescent spectra10.1016/j.jssc.2010.10.025 ↗
20. Red-emitting CaLa4(SiO4)3O: Eu3+, phosphor with superior thermal stability and high quantum efficiency for warm w-LEDs10.1016/j.jallcom.2016.10.211 ↗
21. Sr2Y8(SiO4)6O2: Bi3+/Eu3+: A single-component white-emitting phosphor via energy transfer for UV w-LEDs10.1039/c5tc01993a ↗
22. Oxide ion conduction mechanism in RE9.33(SiO4)6O2, and Sr2RE8(SiO4)6O2, (RE=La, Nd) from neutron powder diffraction10.1016/j.ssi.2005.09.015 ↗
23. Photoluminescence and decay profiles of undoped and Fe3+, Eu3+-doped PLZT ceramics at low temperatures down to 10K10.1016/s0020-1693(00)00008-6 ↗
24. A novel single-composition trichromatic white-light Ca3Y(GaO)3(BO3)4: Ce3+, Mn2+, Tb3+ phosphor for UV-light emitting diodes10.1021/jp107856d ↗
25. Sensitized fluorescence of Ce3+/Mn2+, system in phosphate glass10.1016/s0022-3697(02)00416-x ↗
26. Influence of energy transfer by the exchange mechanism on donor luminescence10.1063/1.1697063 ↗