Thermal, mechanical, and upconversion properties of Er3+/Yb3+ co-doped titanate glass prepared by levitation method

Pan, Xiuhong; Yu, Jiahui; Liu, Yan; Yoda, Shinichi; Yu, Huimei; Zhang, Minghui; Ai, Fei; Jin, Fei; Jin, Weiqing

doi:10.1016/j.jallcom.2011.04.104

Cited by 22 publications

(11 citation statements)

References 33 publications

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“…The emission intensity (I) is proved to be a function of pump power (P) and the number of photon absorbed per photon emitted (n): n I P  . The curves reported in the literature are linear [30,31]. The emission intensity depends on the pump power because that the low energy photons can be absorbed by Er 3+ and Yb 3+ ions in an "unsaturated" upconversion process.…”

Section: Resultsmentioning

confidence: 98%

Upconversion 32Nb2O5–10La2O3–16ZrO2 glass activated with Er3+/Yb3+ and dye sensitized solar cell application

Lia

Lin

et al. 2017

J Adv Ceram

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Er 3+ /Yb 3+ codoped niobium pentoxide glasses were fabricated by the aerodynamic levitation (ADL) method with rapid cooling rate. All samples with various doping concentrations showed good upconversion luminescence properties under 980 nm laser excitation. The structure, transmittance spectrum, and luminescence properties of the samples were systemically investigated by XRD, UV-Vis-NIR spectrophotometer, and upconversion spectra. All transparent samples exhibited green and red upconversion emissions centered at 532, 547, and 670 nm. Experimental results showed that the sample codoped with 1 mol% Er 3+ /Yb 3+ has the strongest upconversion emissions, and the increase of the doped Yb 3+ concentration results in the increased red emission and reduced green emission. The logI-logP plot of green emission indicated that the green emissions reach the saturation at high pump power excitation, deviating from the low-power regime. After one-photon energy transfer (ET) process, 4 I 11/2 + 4 I 11/2 → 4 F 7/2 + 4 I 15/2 process between the two neighboring Er 3+ ions was responsible for the population of the 4 S 3/2 / 4 H 11/2 states. The niobium pentoxide codoped with Er 3+ /Yb 3+ bulk glasses could be used in the dye sensitized solar cell (DSSC) to improve the efficiency.

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Section: Resultsmentioning

confidence: 98%

Upconversion 32Nb2O5–10La2O3–16ZrO2 glass activated with Er3+/Yb3+ and dye sensitized solar cell application

Lia

Lin

et al. 2017

J Adv Ceram

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“…[11,12,14,15]. Based on the energy matching conditions and the quadratic dependence on excitation power, the possible upconversion mechanisms were achieved.…”

Section: Resultsmentioning

confidence: 99%

“…Upconversion is an anti-Stokes emission process that converts long-wavelength pump sources into short-wavelength emission. Usually only two-photon upconversion processes are observed, and the mechanism of these two-photon transitions has been extensively analyzed in Er/ Yb-codoped materials [11][12][13][14][15][16]. Yang et al [13] studied the reduction of upconversion emission in CaTiO 3 :Yb,Er, while Deren et al [17] showed upconversion emission in CaTiO 3 :…”

Section: Introductionmentioning

confidence: 99%

Structural disorder-dependent upconversion in Er3+/Yb3+-doped calcium titanate

Eduardo¹,

Figueiredo²,

Li³

et al. 2014

Ceramics International

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“…6(b). For most UC processes, UC emission intensity (I UC ) depends on the infrared excitation power (P) on the basis of the power law: I UC ∝ P n , where n is the number of absorbed photons per visible photon emitted, which can be obtained from the slope of emission intensity vs. laser excitation power in a log-log plot (34). As shown in Fig.…”

Section: Chromatic Coordinatesmentioning

confidence: 99%

Tunable multicolor and white‐light upconversion luminescence in Yb³⁺/Tm³⁺/Ho³⁺ tri‐doped NaYF₄ micro‐crystals

Lin

Teng

et al. 2014

Luminescence

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NaYF4 micro-crystals with various concentrations of Yb(3+) /Tm(3+) /Ho(3+) were prepared successfully via a simple and reproducible hydrothermal route using EDTA as the chelating agent. Their phase structure and surface morphology were studied using powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD patterns revealed that all the samples were pure hexagonal phase NaYF4. SEM images showed that Yb(3+)/Tm(3+)/Ho(3+) tri-doped NaYF4 were hexagonal micro-prisms. Upconversion photoluminescence spectra of Yb(3+)/Tm(3+)/Ho(3+) tri-doped NaYF4 micro-crystals with various dopant concentrations under 980 nm excitation with a 665 mW pump power were studied. Tunable multicolor (purple, purplish blue, yellowish green, green) and white light were achieved by simply adjusting the Ho(3+) concentration in 20%Yb(3+)/1%Tm(3+)/xHo(3+) tri-doped NaYF4 micro-crystals. Furthermore, white-light emissions could be obtained using different pump powers in 20%Yb(3+)/1%Tm(3+)/1%Ho(3+) tri-doped NaYF4 micro-crystals at 980 nm excitation. The pump power-dependent intensity relationship was studied and relevant energy transfer processes were discussed in detail. The results suggest that Yb(3+)/Tm(3+) Ho(3+) tri-doped NaYF4 micro-crystals have potential applications in optoelectronic devices such as photovoltaic, plasma display panel and white-light-emitting diodes.

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Thermal, mechanical, and upconversion properties of Er3+/Yb3+ co-doped titanate glass prepared by levitation method

Cited by 22 publications

References 33 publications

Upconversion 32Nb2O5–10La2O3–16ZrO2 glass activated with Er3+/Yb3+ and dye sensitized solar cell application

Upconversion 32Nb2O5–10La2O3–16ZrO2 glass activated with Er3+/Yb3+ and dye sensitized solar cell application

Structural disorder-dependent upconversion in Er3+/Yb3+-doped calcium titanate

Tunable multicolor and white‐light upconversion luminescence in Yb³⁺/Tm³⁺/Ho³⁺ tri‐doped NaYF₄ micro‐crystals

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Thermal, mechanical, and upconversion properties of Er3+/Yb3+ co-doped titanate glass prepared by levitation method

Cited by 22 publications

References 33 publications

Upconversion 32Nb2O5–10La2O3–16ZrO2 glass activated with Er3+/Yb3+ and dye sensitized solar cell application

Upconversion 32Nb2O5–10La2O3–16ZrO2 glass activated with Er3+/Yb3+ and dye sensitized solar cell application

Structural disorder-dependent upconversion in Er3+/Yb3+-doped calcium titanate

Tunable multicolor and white‐light upconversion luminescence in Yb3+/Tm3+/Ho3+ tri‐doped NaYF4 micro‐crystals

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Tunable multicolor and white‐light upconversion luminescence in Yb³⁺/Tm³⁺/Ho³⁺ tri‐doped NaYF₄ micro‐crystals