Intense red and green emissions from Ho3+/Yb3+ co-doped Sodium Gadolinium Molybdate Nano-phosphor: Effect of calcination temperature and Intrinsic optical bistability
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Abstract
Abstract We present the structural and luminescent properties of Ho3+/Yb3+ co-doped Gd0.5Na0.5MoO4 nano-phosphor synthesized through the facile co-precipitation method at different calcination temperatures. The X-ray diffraction (XRD) patterns of the samples show the pure tetragonal phase formation. The upconversion (UC) spectra recorded on excitation with 980 nm laser show the intense emission bands at 545 nm (green) and 659 nm (red) in which red emission is more intense than green emission. The intense red is suitable for bio-imaging. Under 452 nm excitation, the intense green downconversion (DC) emission is observed. It is observed that with increasing the calcination temperature, the UC/DC emission intensity increases. One of the interesting features explored is the observation of intrinsic optical bistability (IOB). This material may be applicable in various fields such as biological cell imaging, phototherapy, optical switching, display devices, solar cells, etc.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Luminescence and Fluorescent Materials · Terahertz technology and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (38)
Show source-provided references
1. Upconversion luminescent materials: Advances and applications10.1021/cr400478f ↗
2. Recent developments in lanthanide-based luminescent probes10.1016/j.ccr.2014.02.001 ↗
3. Probing a highly efficient dual mode: Down-upconversion luminescence and temperature sensing performance of rare-earth oxide phosphors10.1039/C2DT32054A ↗
4. Synthesis and Luminescence Properties of a Novel Yellow–White Emitting NaLa(MoO4)2:Dy3+, Li+ Phosphor10.1166/jnn.2018.15436 ↗
5. Lanthanide-Activated Phosphors Based on 4f-5d Optical Transitions: Theoretical and Experimental Aspects10.1021/acs.chemrev.6b00691 ↗
6. Recent advances in energy transfer in bulk and nanoscale luminescent materials: From spectroscopy to applications10.1039/C5CS00067J ↗
7. Energy transfer in lanthanide upconversion studies for extended optical applications10.1039/C4CS00188E ↗
8. Enhanced frequency upconversion in Ho3+/Yb3+/Li+:YMoO4 nanophosphors for photonic and security ink applications10.1063/1.4971966 ↗
9. Review: Down conversion materials for solid-state lighting10.1111/jace.12943 ↗
10. Controlling upconversion nanocrystals for emerging applications10.1038/nnano.2015.251 ↗
11. Recent advances in design and fabrication of upconversion nanoparticles and their safe theranostic applications10.1002/adma.201301197 ↗
12. Optical/magnetic multimodal bioprobes based on lanthanide-doped inorganic nanocrystals10.1002/chem.201204640 ↗
13. Deposition-precipitation synthesis of Yb3+/Er3+ co-doped BiOBr/AgBr heterojunction photocatalysts with enhanced photocatalytic activity under Vis/NIR light irradiation10.1016/j.seppur.2019.116450 ↗
14. Highly efficient visible/NIR photocatalytic activity and mechanism of Yb3+/Er3+ co-doped Bi4O5I2 up-conversion photocatalyst10.1016/j.seppur.2020.117040 ↗
15. Novel one-step combustion synthesis of BiOBr:Yb3+, Er3+/AgBr upconversion heterojunction photocatalysts with enhanced Vis/NIR photocatalytic activities10.1039/C8CY02187B ↗
16. Basic understanding of the lanthanide related upconversion emissions10.1039/c3nr34069d ↗
17. PEGylated α-Gd2(MoO4)3 Mesoporous Flowers: Synthesis, Characterization, and Biological Application10.1021/cg400893h ↗
18. Multifunctional Eu-doped NaGd(MoO4)2 nanoparticles functionalized with poly(l-lysine) for optical and MRI imaging10.1039/C6DT02663J ↗
19. Facile morphology-controllable hydrothermal synthesis and color tunable luminescence properties of NaGd(MoO4)2:Eu3+,Tb3+ microcrystals10.1039/C5RA06221G ↗
20. Rugby-ball-shaped Na0.5La0.5MoO4:Eu3+ 3D architectures: synthesis, characterization, and their luminescence behavior
21. NaGd(MoO4)2 nanocrystals with diverse morphologies: Controlled synthesis, growth mechanism, photoluminescence and thermometric properties
22. Up/down conversion luminescence properties of (Na0.5Gd0.5) MoO4:Ln3+ (Ln = Eu, Tb, Dy, Yb/Er,Yb/Tm, and Yb/Ho) microstructures: synthesis, morphology, structural and magnetic investigation10.1039/C4NJ00165F ↗
23. Large enhancement in upconverted green emission intensity from Ho3+/Yb3+ co-doped Y2Ti2O7 phosphor in the presence of Zn2+10.1016/j.materresbull.2019.03.029 ↗
24. Bistable chromatic switching in Yb3+-doped NdPO4 crystals10.1103/PhysRevB.74.035106 ↗
25. Rare earth based nanostructured materials: Synthesis, functionalization, properties and bioimaging and biosensing applications10.1515/nanoph-2017-0007 ↗
26. Multifunctional pure and Eu3+ doped β-Ag2MoO4: photoluminescence, energy transfer dynamics and defect induced properties10.1039/C5DT03113C ↗
27. Upconversion Luminescence and Energy-Transfer Mechanism of NaGd(MoO4)2: Yb3+/Er3+ Microcrystals10.1111/jace.14141 ↗
28. Synthesis and luminescent properties of high brightness MRE(MoO 4)2:Eu3+ (M = Li, Na, K; RE = Gd, Y, Lu) red phosphors for white LEDs10.1016/j.solidstatesciences.2014.01.003 ↗
29. Enhanced green upconversion photoluminescence from Ho3+/Yb3+ co-doped CaZrO3 phosphor via Mg2+ doping10.1039/C6RA23835A ↗
30. Power dependence of upconversion luminescence in lanthanide and transition-metal-ion systems10.1103/PhysRevB.61.3337 ↗
31. Cooperative Bistability in Dense, Excited Atomic Systems10.1103/PhysRevLett.73.1103 ↗
32. Cooperative optical bistability in the dimer system Cs3Y2Br9:10% Yb3+10.1063/1.471532 ↗
33. Intrinsic Bistability of Luminescence and Stimulated Emission in Yb- and Tm-Doped Glass10.1103/PhysRevLett.84.1898 ↗
34. Intrinsic optical bistability and frequency upconversion in Tm3+–Yb3+ codoped Y2WO6 phosphor10.1039/C4DT01266F ↗
35. Effect of the Li+ ion on the multimodal emission of a lanthanide doped phosphor10.1039/C4RA17315E ↗
36. Intensity analysis and crystal-field modeling of Ho3+ in KPb2Cl5 host10.1063/1.2919765 ↗
37. The dual-model up/down-conversion green luminescence of Gd6O5F8:Yb3+, Ho3+, Li+ and its application for temperature sensing10.1039/C6TC01812B ↗
38. Enhanced red emission from Eu3+, A+ (Li+, Na+, K+) co-doped CaZrO3 phosphor10.1016/j.jlumin.2018.07.025 ↗