Up-conversion emission color tuning in NaLa(MoO 4 ) 2 : Nd 3+ /Yb 3+ /Ho 3+ excited at 808 nm

Li, Jiajia; Li, Ting; Suo, Hao; Zhao, Xiaoqi; Guo, Chongfeng

doi:10.1016/j.ceramint.2017.02.041

Cited by 29 publications

(4 citation statements)

References 34 publications

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“…Recently, a group of double alkaline rare-earth molybdates ALn(MoO 4 ) 2 (A = alkali metal ions; Ln = trivalent rare earth ions) with scheelite-type tetragonal symmetry structure have been investigated as the good candidates for down-shifting luminescence with rare-earth ion incorporations owing to their high chemical and physical stabilities and easy rare-earth ion accommodation, involving KLa(MoO 4 ):Eu 3+ , KLa(MoO 4 ):Dy 3+ ,Eu 3+ , NaLa(MoO 4 ) 2 :Eu 3+ , NaGd(MoO 4 ) 2 :Eu 3+ ,Eu 3+ /Tb 3+ , NaGd(MoO 4 ) 2 :Sm 3+ ,Eu 3+ , etc. − As illustrated for several crystals from this family, the disordered tetragonal-phase structure can accommodate doping Ln ions at high concentrations without destroying the structure. Moreover, the UCL properties have also been shown good performance in ALn(MoO 4 ) 2 :Yb 3+ ,Er 3+ (A = Li, Na, and K; Ln = La, Gd, and Y), Na 0.5 Gd 0.5 MoO 4 :Yb 3+ ,Er 3+ , NaLa(MoO 4 ) 2 :Yb 3+ ,Er 3+ , NaLa(MoO 4 ) 2 :Yb 3+ ,Ho 3+ , NaY(MoO 4 ) 2 :Yb 3+ ,Sm 3+ , NaGd(MoO 4 ) 2 :Yb 3+ ,Er 3+ /Ho 3+ /Tm 3+ , NaGd(MoO 4 ) 2 :Yb 3+ /Er 3+ /F – . − In addition, Li et al , reported that alkali metal ions A in ALa(MoO 4 ) 2 can be replaced by Ag element to form AgLa(MoO 4 ) 2 as a novel host with similar structure for good UCL. However, it is found that both Ag and Ln are rare elements with high price for raw materials in these matrixes.…”

Section: Introductionmentioning

confidence: 97%

Low-Temperature Solid-State Synthesis and Upconversion Luminescence Properties in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Er³⁺ and Color Tuning in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Ho³⁺,Ce³⁺ Phosphors

Deun

2019

Inorg. Chem.

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In this Article, we reported the synthesis and the upconversion luminescence (UCL) properties of a series of novel (Na/Li)Bi(MoO4)2:Yb3+,Er3+ [(N/L)BMO:Yb3+,Er3+] and (Na/Li)Bi(MoO4)2:Yb3+,Ho3+,Ce3+ [(N/L)BMO:Yb3+,Ho3+,Ce3+] phosphors. X-ray diffraction patterns and Rietveld refinements for several representative samples indicated the pure phase of as-prepared samples. The Yb3+,Er3+ codoped (N/L)BMO presented bright green luminescence under 975 nm laser excitation with UCL spectra showing two main green bands around 529 nm (Er3+, 2H11/2 → 4I15/2) and 551 nm (Er3+, 4S3/2 → 4I15/2), in addition to a very weak one at 655 nm (Er3+, 4F9/2 → 4I15/2). The (N/L)BMO:Yb3+,Ho3+ mainly showed a green band around 544 nm (5S2,5F4 → 5I8) and a red band around 654 nm (5F5 → 5I8) upon 975 nm laser excitation. With increasing Yb3+ concentrations in (N/L)BMO:Yb3+,0.01Ho3+, the red/green ratios decreased monotonously corresponding to the emission color variation from light red to light yellow. Both UCL mechanisms of Yb3+,Er3+ and Yb3+,Ho3+ were determined to be two-phonons absorption processes in (N/L)BMO:Yb3+,Er3+/Ho3+. The Ce3+ ions were introduced into Yb3+,Ho3+ codoped (N/L)BMO to show the color tuning from light yellow to light red originating from the cross relaxation processes of (CR1) Ho3+ (5F4,5S2) + Ce3+ (2F5/2) → Ho3+ (5F5) + Ce3+ (2F7/2) and (CR2) Ho3+(5I6) + Ce3+ (2F5/2) → Ho3+ (5I7) + Ce3+ (2F7/2), which is based on the energy matching of Ce3+2F7/2-2F5/2 level pairs with Ho3+5I6-5I7 and 5F4,5S2-5F5 level pairs and confirmed by the decay times. These results suggest good UCL properties of (N/L)BMO:Yb3+, Er3+ and (N/L)BMO:Yb3+, Ho3+, Ce3+ materials, and color modulation is easily controlled by varying Yb3+ concentration and a cross relaxation process between Ce3+ and Ho3+, which provides efficient methods to regulate the emission color of UCL phosphors.

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Section: Introductionmentioning

confidence: 97%

Low-Temperature Solid-State Synthesis and Upconversion Luminescence Properties in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Er³⁺ and Color Tuning in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Ho³⁺,Ce³⁺ Phosphors

Deun

2019

Inorg. Chem.

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“…UCNPs have multiple emission bands. Thus, the emission color can be modulated by adjusting the intensity ratio of different emission bands . By combining the upconversion with a PC, the specific emission band can be inhibited or enhanced by adjusting the position of the PBG .…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the emission color can be modulated by adjusting the intensity ratio of different emission bands. 25 By combining the upconversion with a PC, the specific emission band can be inhibited or enhanced by adjusting the position of the PBG. 22 In this regard, we reason that the emission color can be tuned along with the variation of PBG directly.…”

Section: Introductionmentioning

confidence: 99%

Luminescent Color Controller-Based Bilayer PC-UCNPs-PC Dynamically Modulate Photon Propagation

Xia

et al. 2023

ACS Appl. Opt. Mater.

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Lanthanide-doped upconversion nanoparticles (UCNPs) exhibit abundant emission wavelengths under near infrared (NIR) excitation. This property enables UCNPs to have potential for multicolor output. However, the realization of multicolor-tunable emission output in UCNPs at a fixed composition has remained challenging. Here, a luminescent color controller that can dynamically control the upconversion luminescence (UCL) colors from UCNPs is reported. By constructing bilayer photonic crystals (PCs) in which the UCNPs are distributed between the two-layer PCs, the propagation of green and red emission can be modulated by the top and bottom PCs, respectively. Moreover, the photonic bandgap (PBG) could be varied by changing the reflected angles, according to Bragg diffraction. Thus, the variation in the viewing angles also results in the yellow to blue and red to cyan structural color changes on the top and bottom bilayer PC-UCNPs-PC films. Correspondingly, the emission color outputs are changed from red to yellow-green and green to yellow-green, respectively. These findings provide a general method to achieve multicolor-tunable UCL by a bilayer PC-UCNPs-PC film. Moreover, the UCNPs with multicolor emissions in this work enrich the upconversion system and should have potential applications in display and anticounterfeiting.

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“…Located in the first biological window, 808 nm NIR light is expected to be an attractive alternative to greatly minimize the 980 nm laser-induced heating effect because of its low absorption coefficient for water and biomolecules in biological tissues. Considering the large absorption cross section of Nd 3+ ions (∼1.2×10 −19 cm 2 at 808 nm) and effective Nd 3+ →Yb 3+ energy transfer process, an 808 nm NIR light excited upconversion (UC) process could be easily realized by choosing Nd 3+ as an alternative sensitizer, Yb 3+ as an energy migrator, and A 3+ (A=Er, Tm, Ho) as an activator [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Nd³⁺/Yb³⁺ cascade-sensitized single-band red upconversion emission in active-core/active-shell nanocrystals

Ding¹,

Hou²,

Yuan³

et al. 2018

Nanotechnology

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Lanthanide-doped upconversion nanomaterials (UCNMs) have promoted extensive interest for its biological research and biomedical applications, benefiting from low autofluorescence background, deep light penetration depth, and minimal photo-damage to biological tissues. However, owing to the 980 nm laser-induced overheating issue and the attenuation effect associated with conventional multi-peak emissions, the usage of UCNMs as fluorescent bioprobes is still limited. To address these issues, an effective strategy has been proposed to tune both the excitation and emission peaks of UCNMs into the first biological window (650 ∼ 900 nm), where the light absorption by water and hemoglobin in biological tissues is minimal. Based on the Nd/Yb cascade-sensitized upconversion process and efficient exchange-energy transfer between Mn and Er in conjunction with the active-core@active-shell nanostructured design, we have developed a new class of upconversion nanoparticles (UCNPs) that exhibit strong single-band red emission upon excitation of an 808 nm near-infrared laser. Hopefully, the well-designed KMnF:Yb/Er/Nd@ KMnF:Yb/Nd core-shell nanocrystals will be considered a promising alternative to conventionally used UCNPs for biolabeling applications without the concern of the overheating issue and the attenuation constraints.

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Up-conversion emission color tuning in NaLa(MoO 4 ) 2 : Nd 3+ /Yb 3+ /Ho 3+ excited at 808 nm

Cited by 29 publications

References 34 publications

Low-Temperature Solid-State Synthesis and Upconversion Luminescence Properties in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Er³⁺ and Color Tuning in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Ho³⁺,Ce³⁺ Phosphors

Low-Temperature Solid-State Synthesis and Upconversion Luminescence Properties in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Er³⁺ and Color Tuning in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Ho³⁺,Ce³⁺ Phosphors

Luminescent Color Controller-Based Bilayer PC-UCNPs-PC Dynamically Modulate Photon Propagation

Nd³⁺/Yb³⁺ cascade-sensitized single-band red upconversion emission in active-core/active-shell nanocrystals

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Up-conversion emission color tuning in NaLa(MoO 4 ) 2 : Nd 3+ /Yb 3+ /Ho 3+ excited at 808 nm

Cited by 29 publications

References 34 publications

Low-Temperature Solid-State Synthesis and Upconversion Luminescence Properties in (Na/Li)Bi(MoO4)2:Yb3+,Er3+ and Color Tuning in (Na/Li)Bi(MoO4)2:Yb3+,Ho3+,Ce3+ Phosphors

Low-Temperature Solid-State Synthesis and Upconversion Luminescence Properties in (Na/Li)Bi(MoO4)2:Yb3+,Er3+ and Color Tuning in (Na/Li)Bi(MoO4)2:Yb3+,Ho3+,Ce3+ Phosphors

Luminescent Color Controller-Based Bilayer PC-UCNPs-PC Dynamically Modulate Photon Propagation

Nd3+/Yb3+ cascade-sensitized single-band red upconversion emission in active-core/active-shell nanocrystals

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Low-Temperature Solid-State Synthesis and Upconversion Luminescence Properties in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Er³⁺ and Color Tuning in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Ho³⁺,Ce³⁺ Phosphors

Low-Temperature Solid-State Synthesis and Upconversion Luminescence Properties in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Er³⁺ and Color Tuning in (Na/Li)Bi(MoO₄)₂:Yb³⁺,Ho³⁺,Ce³⁺ Phosphors

Nd³⁺/Yb³⁺ cascade-sensitized single-band red upconversion emission in active-core/active-shell nanocrystals