Energy transfer mechanisms of quantum cutting near infrared luminescence in Ho3+/Yb3+ co-doped Y2O3 transparent ceramics

Xu, Qiang; Lin, Hui; Teng, Hao; Chen, Chong; Zhou, Shengming

doi:10.1016/j.jnoncrysol.2014.06.012

Cited by 8 publications

(2 citation statements)

References 32 publications

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“…The manufacture of ceramic materials is very complex also because they are not limited to the aerospace section, but they have the opportunity to be applied in many advanced engineering applications [2][3][4][5][6]. Insulation properties spelt out in the thermal barrier factor hold bright prospects [7].…”

Section: Introductionmentioning

confidence: 99%

On the Use of Infrared Thermography and Acousto—Ultrasonics NDT Techniques for Ceramic-Coated Sandwich Structures

et al. 2019

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Ceramic-coated materials used in different engineering sectors are the focus of world-wide interest and have generated a need for inspection techniques that detect very small structural anomalies. Non-destructive testing is increasingly being used to evaluate coating thickness and to test for coating flaws. The main pros of non-destructive testing is that the tested object remains intact and available for continued use afterward. This paper reports on an integrated, non-destructive testing approach that combines infrared thermography and acousto-ultrasonics to evaluate advanced aerospace sandwich structure materials with the aim of exploring any potential for detecting defects of more than one type. Combined, these two techniques successfully detected fabrication defects, including inclusions and material loss.

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Section: Introductionmentioning

confidence: 99%

On the Use of Infrared Thermography and Acousto—Ultrasonics NDT Techniques for Ceramic-Coated Sandwich Structures

et al. 2019

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“…Ho 3+ ion has suitable energy levels that match well with Yb 3+ ion and favorable metastable energy levels for DC emission, so Ho 3+ ion and Yb 3+ ion are a good combination in NIR DC investigation. In recent years, large efforts have been devoted to the study of the DC emission realized with Ho 3+ /Yb 3+ couple in a variety of hosts. − However, the DC properties in Ho 3+ - and Yb 3+ -codoped Lu 2 O 3 host are rarely studied. Beyond that, under the excitation of 5 G 6 / 5 F 1 or higher energy level of Ho 3+ , cooperative energy-transfer (ET) process is considered as the main route for the ET from 5 F 3 level of Ho 3+ ions to 2 F 5/2 level of Yb 3+ ions.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Energy-Transfer Mechanism in Ho³⁺- and Yb³⁺-Codoped Lu₂O₃ Phosphor with Efficient Near-Infrared Downconversion

Xiang

Zhou

et al. 2017

Inorg. Chem.

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A high-temperature solid-state method was used to synthesize the Ho- and Yb-codoped cubic LuO powders. The crystal structures of the as-prepared powders were characterized by X-ray diffraction. The energy-transfer (ET) phenomenon between Ho ions and Yb ions was verified by the steady-state spectra including visible and near-infrared (NIR) regions. Beyond that, the decay curves were also measured to certify the existence of the ET process. The downconversion phenomena appeared when the samples were excited by 446 nm wavelength corresponding to the transition of Ho: I→G/F. On the basis of the analysis of the relationship between the initial transfer rate of Ho: F level and the Yb doping concentration, it indicates that the ET from F state of Ho ions to F state of Yb ions is mainly through a two-step ET process, not the long-accepted cooperative ET process. In addition, a 62% ET efficiency can be achieved in LuO: 1% Ho/30% Yb. Unlike the common situations in which the NIR photons are all emitted by the acceptors Yb, the sensitizers Ho also make contributions to the NIR emission upon 446 nm wavelength excitation. Meanwhile, the I→I transition and F/S→I transition of Ho as well as the F→F transition of Yb match well with the optimal spectral response of crystalline silicon solar cells. The current research indicates that LuO: Ho/Yb is a promising material to improve conversion efficiency of crystalline silicon solar cell.

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

Suo

et al. 2017

Ceramics International

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Energy transfer mechanisms of quantum cutting near infrared luminescence in Ho3+/Yb3+ co-doped Y2O3 transparent ceramics

Cited by 8 publications

References 32 publications

On the Use of Infrared Thermography and Acousto—Ultrasonics NDT Techniques for Ceramic-Coated Sandwich Structures

On the Use of Infrared Thermography and Acousto—Ultrasonics NDT Techniques for Ceramic-Coated Sandwich Structures

Investigation of the Energy-Transfer Mechanism in Ho³⁺- and Yb³⁺-Codoped Lu₂O₃ Phosphor with Efficient Near-Infrared Downconversion

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

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Energy transfer mechanisms of quantum cutting near infrared luminescence in Ho3+/Yb3+ co-doped Y2O3 transparent ceramics

Cited by 8 publications

References 32 publications

On the Use of Infrared Thermography and Acousto—Ultrasonics NDT Techniques for Ceramic-Coated Sandwich Structures

On the Use of Infrared Thermography and Acousto—Ultrasonics NDT Techniques for Ceramic-Coated Sandwich Structures

Investigation of the Energy-Transfer Mechanism in Ho3+- and Yb3+-Codoped Lu2O3 Phosphor with Efficient Near-Infrared Downconversion

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

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Investigation of the Energy-Transfer Mechanism in Ho³⁺- and Yb³⁺-Codoped Lu₂O₃ Phosphor with Efficient Near-Infrared Downconversion