Effect of oxygen partial pressure on the phosphorescence of different lanthanide ion (Ln3+)-doped yttria-stabilised zirconia

Li, Yongzeng; Cai, Tao; Yang, Lixia; Guo, Song; Peng, Di; Zhao, Xiaofeng

doi:10.1016/j.snb.2020.127666

Cited by 17 publications

(8 citation statements)

References 25 publications

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“…Oxygen partial pressure has a significant influence on the phosphorescence lifetimes of both Eu x Y 0.08‐x Zr 0.92 O 1.96 and Dy x Y 0.08‐x Zr 0.92 O 1.96 phosphors, thus confirming previous findings 15,18 . The major finding of this study is that Ln 3+ concentration has different effects on the phosphorescence properties (intensity, decay feature, lifetime) and oxygen sensitivity of Eu x Y 0.08‐x Zr 0.92 O 1.96 and Dy x Y 0.08‐x Zr 0.92 O 1.96 phosphors, as shown in Section 4 and summarised in Table 1.…”

Section: Discussionsupporting

confidence: 88%

“…Our previous studies 15,18 have demonstrated that the oxygen quenching of Eu-based phosphors is attributed to oxygen vacancies-induced CTS energy-variation in the phosphor. At a low oxygen concentration/partial pressure, the concentration of oxygen vacancies in phosphors increases.…”

Section: Discussionmentioning

confidence: 99%

“…The phosphors, formulated as Eu x Y 0.08-x Zr 0.92 O 1.96 and Dy x Y 0.08-x Zr 0.92 O 1.96 (x = 0.001, 0.005, 0.01, 0.02, 0.05), were A survey of the published literature shows that process modeling of CMCs has been studied by a number of researchers. Processes that have been modeled include RMI, 15,16 CVD, 17,18 CVI, [19][20][21][22] and Sol-Gel Infiltration. 23 Impregnation of alumina matrix in eight-harness satin Nextel 610 fabric has been studied numerically in Ref.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…Ishiwada et al 14 demonstrated that the phosphorescence intensity of YAG:Dy decreased significantly at temperatures greater than 727°C as the oxygen concentration increased. Recently, the effects of oxygen partial pressure on the phosphorescence of YSZ:Ln (Ln =Eu, Dy, Sm, and Er) phosphors were also investigated, and revealed that all YSZ:Ln (except for YSZ:Er) exhibited an oxygen quenching phenomenon 15 . These findings suggested that the effects of oxygen partial pressures and/or concentrations on phosphorescence properties at high temperature cannot be ignored.…”

Section: Introductionmentioning

confidence: 99%

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Concentration effect on oxygen quenching behavior of Eu_xY_0.08‐xZr_0.92O_1.96 and Dy_xY_0.08‐xZr_0.92O_1.96 phosphors

et al. 2021

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The effect of oxygen partial pressure on the phosphorescence of Eu x Y 0.08-x Zr 0.92 O 1. 96 and Dy x Y 0.08-x Zr 0.92 O 1.96 (x = 0.001, 0.005, 0.01, 0.02, 0.05) phosphors was investigated and compared to explore the Ln 3+ (Ln 3+ = Eu 3+ , Dy 3+ ) concentration effect on oxygen quenching using a lifetime-based measurement system equipped with a heatable and pressure controllable chamber. The phosphorescence lifetimes of these two series of phosphors were found to be sensitive to the oxygen partial pressure in high-temperature environments. Surprisingly, the oxygen sensitivity of Dy x Y 0.08-x Zr 0.92 O 1.96 phosphors markedly increases as the Dy 3+ concentration increases, while that of Eu x Y 0.08-x Zr 0.92 O 1.96 phosphors remains nearly constant.Further analysis shows that the oxygen quenching phenomenon is attributable to an oxygen vacancy-induced non-radiative decay reduction. However, the mechanisms of non-radiative decay affected by oxygen vacancies differ, with a charge transfer state (CTS) transition mechanism in Eu x Y 0.08-x Zr 0.92 O 1.96 and a crossrelaxation mechanism in Dy x Y 0.08-x Zr 0.92 O 1.96 phosphors. The CTS measured from the excitation spectrum is found to be independent of the Eu 3+ concentration. In contrast, cross-relaxation is closely related to the Dy 3+ concentration, as demonstrated by the concentration-quenching behaviours of the phosphorescence intensities and lifetimes, and the non-exponential decay curves. The present research was expected to shed light on the development and optimization of oxygen/pressure sensors for high-temperature service.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Concentration effect on oxygen quenching behavior of Eu_xY_0.08‐xZr_0.92O_1.96 and Dy_xY_0.08‐xZr_0.92O_1.96 phosphors

et al. 2021

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“…For example, the composition of YSZ:Er,Yb with 1% Er 3+ , and 3% Yb 3+ is Zr 0.913 Y 0.047 Er 0.01 Yb 0.03 O 1.9565 , the same as in [10]. YSZ:Er was selected because its luminescence has been shown to be insensitive to the gas oxygen environment [14] and because of its promise shown in previous work [15]. YSZ:Tm was selected due to the promise shown with Tm 3+ doped in YAG [16].…”

Section: Methodsmentioning

confidence: 99%

Upconversion phosphor thermometry for use in thermal barrier coatings

Feuk

Nilsson²,

Richter³

2023

Meas. Sci. Technol.

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Measuring the temperature below the surface of a thermal barrier coating (TBC) using a thin phosphor layer is challenging primarily due to the absorption and scattering of laser excitation light and phosphor luminescence as they propagate through the coating. One way to increase phosphor luminescence could be to use upconversion phosphor thermometry, which is investigated in the current study. It is attractive because using longer excitation wavelengths reduces the absorption and scattering in TBCs as 8 % wt. Yttria-Stabilize Zirconia (8YSZ) generally has lower scattering and absorption coefficients around 1000 nm than at 532 and 355 nm. Therefore, the viability of upconversion to measure the temperature at the bottom of a TBC was evaluated for the first time and was compared with the more conventional downconversion phosphor thermometry. The current work involved an experimental study of several phosphors with lanthanides doped in the 8YSZ host, which were excited through downconversion by pulsed 355 nm and 532 nm laser light and through upconversion with 965 nm laser light. The YSZ:Er,Yb and YSZ:Ho,Yb phosphors show promise for upconversion phosphor thermometry. The experimentally acquired optical phosphor characteristics were used to simulate laser light and phosphor luminescence propagation in TBCs using Kubelka-Munk theory. This was to evaluate the signal strength with upconversion excitation compared to downconversion excitation. Upconversion excitation resulted greater signal strength from an embedded phosphor layer than 532 nm excitation and much higher than 355 nm excitation. Upconversion lifetime phosphor thermometry also resulted in improved phosphor lifetime temperature sensitivity. Coupled with reduced interference from background luminescence from impurities in TBCs with upconversion, it is a promising method for temperature measurements with the thermographic phosphor embedded in or underneath a TBC.

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Highly Sensitive Optical Manometer Based on the Visible Emissions of Ce³⁺‐Doped La₆Sr₄(SiO₄)₆F₂ Multisite Phosphors

Szymczak,

Du,

Runowski

et al. 2023

Advanced Optical Materials

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For overcoming the unsatisfactory sensitivity of optical manometers and the susceptibility of manometric parameters to temperature changes, a series of Ce3+‐doped La6Sr4(SiO4)6F2 phosphors with multicolor emissions are developed. Excited by 375 nm, the resultant compounds exhibit asymmetric and broad emission bands, which can be easily deconvoluted into two peaks originating from seven to ninefold coordinated Ce3+ sites, where their intensities are dependent on the excitation wavelength. Through analyzing the pressure‐related luminescence intensity ratio (LIR) derived from these two Ce3+ sites, it is clear that the final manometer exhibits an unprecedentedly high relative sensitivity of ≈ 425% GPa−1 at 0.76 GPa (the highest value reported to date). As pressure increases, the emitting color tunes from yellow to blue, resulting in the possibility of visual pressure sensing. Furthermore, based on the color coordinates of the phosphor material, its pressure sensing capability is discussed, in which the maximum sensitivities are 24.38 and 27.74% GPa−1 at 0.76 GPa, when x‐coordinate and y‐coordinate are employed, respectively. Additionally, the LIR value is only slightly affected by temperature, leading to a thermal invariability manometric factor (TIMF) > 400 K GPa−1. The findings indicate that Ce3+‐doped La6Sr4(SiO4)6F2 phosphors are good luminescent candidates for optical and visual multi‐mode manometers.

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Effect of oxygen partial pressure on the phosphorescence of different lanthanide ion (Ln3+)-doped yttria-stabilised zirconia

Cited by 17 publications

References 25 publications

Concentration effect on oxygen quenching behavior of Eu_xY_0.08‐xZr_0.92O_1.96 and Dy_xY_0.08‐xZr_0.92O_1.96 phosphors

Concentration effect on oxygen quenching behavior of Eu_xY_0.08‐xZr_0.92O_1.96 and Dy_xY_0.08‐xZr_0.92O_1.96 phosphors

Upconversion phosphor thermometry for use in thermal barrier coatings

Highly Sensitive Optical Manometer Based on the Visible Emissions of Ce³⁺‐Doped La₆Sr₄(SiO₄)₆F₂ Multisite Phosphors

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Effect of oxygen partial pressure on the phosphorescence of different lanthanide ion (Ln3+)-doped yttria-stabilised zirconia

Cited by 17 publications

References 25 publications

Concentration effect on oxygen quenching behavior of EuxY0.08‐xZr0.92O1.96 and DyxY0.08‐xZr0.92O1.96 phosphors

Concentration effect on oxygen quenching behavior of EuxY0.08‐xZr0.92O1.96 and DyxY0.08‐xZr0.92O1.96 phosphors

Upconversion phosphor thermometry for use in thermal barrier coatings

Highly Sensitive Optical Manometer Based on the Visible Emissions of Ce3+‐Doped La6Sr4(SiO4)6F2 Multisite Phosphors

Contact Info

Product

Resources

About

Concentration effect on oxygen quenching behavior of Eu_xY_0.08‐xZr_0.92O_1.96 and Dy_xY_0.08‐xZr_0.92O_1.96 phosphors

Concentration effect on oxygen quenching behavior of Eu_xY_0.08‐xZr_0.92O_1.96 and Dy_xY_0.08‐xZr_0.92O_1.96 phosphors

Highly Sensitive Optical Manometer Based on the Visible Emissions of Ce³⁺‐Doped La₆Sr₄(SiO₄)₆F₂ Multisite Phosphors