Growth and characterization of air annealing Tb-doped YAG:Ce single crystal for white-light-emitting diode

Gong, Maogao; Xiang, Weidong; Zhong, Jiasong; Chen, Daqin; Huang, Jun; Gu, Guorui; Yang, Cheng Fu; Xiang, Run

doi:10.1016/j.jallcom.2015.03.162

Cited by 26 publications

(6 citation statements)

References 36 publications

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“…Y 3 Al 5 O 12 (YAG) is one of the most important fluorescence laser materials, which possesses good optical, thermal, and mechanical properties . After being doped with appropriate ions (transition-metal or RE ions), YAG can be used as host material in white-light emitting diodes (WLEDs) and optical temperature sensors. − Tm 3+ , as active laser ions, can be easily doped into YAG, yielding the Tm:YAG (Tm 3+ -doped YAG) lasers. According to the literature, Tm:YAG is also an active laser medium that operates between 1.89 and 2.18 μm.…”

Section: Introductionmentioning

confidence: 99%

Deciphering the Microstructure and Energy-Level Splitting of Tm³⁺-Doped Yttrium Aluminum Garnet

Zhong

et al. 2018

Inorg. Chem.

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Thulium-doped yttrium aluminum garnet (Tm:YAG) is an important solid-state laser crystal. The energy-level splitting within it is still an unresolved problem. Here, we perform a theoretical study on the microstructure of Tm-doped YAG using the CALYPSO structure search method in conjunction with first-principles calculations. The calculated results show that the 4.16% doping concentration of Tm impurity causes an obvious structural distortion of YAG crystal, forming an orthorhombic phase in C symmetry. On the basis of our developed WEPMD method, we obtain a new and complete set of free-ion and crystal field parameters by a good fit (with proper irreducible representations) to 69 observed energy levels and determine the exact energy-level splitting of Tm in YAG. The calculated Stark levels and electric dipole transitions are in excellent agreement with the measured data and similar theoretical calculations. Some promising emission lines between F, F, D, and I states are presented. These findings offer fundamental insights and practical tools for further exploration of the structural and electronic properties of other transition-metal-doped YAG crystal.

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Section: Introductionmentioning

confidence: 99%

Deciphering the Microstructure and Energy-Level Splitting of Tm³⁺-Doped Yttrium Aluminum Garnet

Zhong

et al. 2018

Inorg. Chem.

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“…Single crystals with high transparency and specific luminescence are suitable for such applications. [4][5][6] However, the large thermal strain generated by the heat gradation causes synthesis of large single crystals difficult. To solve this problem, many studies to explore alternative to single crystals have been conducted.…”

mentioning

confidence: 99%

Transparency and Photoluminescence of Gas-Pressure Sintered Lu-α-SiAlON:Ce³⁺ Ceramics

Aminaka

Tatami

Iijima

et al. 2022

ECS J. Solid State Sci. Technol.

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Owing to the growing demand for high power optical devices in several fields such as manufacturing, medicine, and communications, the demand for large and transparent inorganic materials capable of emitting multiple colors is increasing. α-SiAlON, which has excellent thermal and mechanical properties, is a phosphor that emits blue light because of the doping of Ce3+. However, only a few transparent and photoluminescent α-SiAlON:Ce3+ ceramics have been developed. In this study, we fabricated transparent α-SiAlON:Ce3+ ceramics using a gas-pressure sintering technique utilizing Lu3+, which has the smallest ionic radius among the rare-earth ions used to stabilize α-SiAlON. The Lu-α-SiAlON:Ce3+ ceramics exhibited higher transparency than Y-α-SiAlON:Ce3+ because of their finer grain size. The maximum emission wavelength of the Lu-α-SiAlON:Ce3+ ceramics was blue shifted relative to that of the Y-α-SiAlON:Ce3+ ceramics owing to lattice shrinkage. A lower Ce concentration resulted in higher transparency and a blue shift in the maximum emission wavelength. Furthermore, the in-line transmittance of the gas-pressure sintered Lu-α-SiAlON:Ce3+ ceramics using fine raw powders of rare-earth oxides was 50% at 600 nm, which was higher than that of Y-α-SiAlON:Ce3+ ceramics prepared via the same gas-pressure sintering technique followed by hot isostatic pressing.

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“…Coactivation with Ce ions is used to increase the spectral density of luminescence in the visible range. Materials doped with Tb and Ce ions are also the subject of lively discussion for the purposes of LED lighting [25][26][27][28][29][30][31] and photoconversion [32]. Nevertheless, the use of codoping by the Ce and Tb ions requires a carefully chosen excitation length for the simultaneous effective excitation of the luminescence of both activators.…”

Section: Introductionmentioning

confidence: 99%

Compositionally Disordered Ceramic (Gd,Y,Tb,Ce)3Al2Ga3O12 Phosphor for an Effective Conversion of Isotopes’ Ionizing Radiation to Light

Korzhik,

Karpyuk,

Bondarau

et al. 2023

Ceramics

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Compositionally disordered crystalline material (Gd,Y,Tb,Ce)3Al2Ga3O12 was demonstrated to be a highly effective converter of corpuscular ionizing radiation into light. The material was found to be radiation-tolerant to an intense 10 MeV electron beam and had a low temperature dependence on light yield. These findings open an opportunity to utilize the developed material to create long-living, high-flux sources of optical photons under the irradiation of isotope sources. Besides the purposes of the measurement of ionizing radiation by the scintillation method in a harsh irradiation environment, this puts forward the exploiting of the developed material for indirect isotope voltaic batteries and the consideration of a photon engine for travel beyond the solar system, where solar wind force becomes negligible.

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Growth and characterization of air annealing Tb-doped YAG:Ce single crystal for white-light-emitting diode

Cited by 26 publications

References 36 publications

Deciphering the Microstructure and Energy-Level Splitting of Tm³⁺-Doped Yttrium Aluminum Garnet

Deciphering the Microstructure and Energy-Level Splitting of Tm³⁺-Doped Yttrium Aluminum Garnet

Transparency and Photoluminescence of Gas-Pressure Sintered Lu-α-SiAlON:Ce³⁺ Ceramics

Compositionally Disordered Ceramic (Gd,Y,Tb,Ce)3Al2Ga3O12 Phosphor for an Effective Conversion of Isotopes’ Ionizing Radiation to Light

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Growth and characterization of air annealing Tb-doped YAG:Ce single crystal for white-light-emitting diode

Cited by 26 publications

References 36 publications

Deciphering the Microstructure and Energy-Level Splitting of Tm3+-Doped Yttrium Aluminum Garnet

Deciphering the Microstructure and Energy-Level Splitting of Tm3+-Doped Yttrium Aluminum Garnet

Transparency and Photoluminescence of Gas-Pressure Sintered Lu-α-SiAlON:Ce3+ Ceramics

Compositionally Disordered Ceramic (Gd,Y,Tb,Ce)3Al2Ga3O12 Phosphor for an Effective Conversion of Isotopes’ Ionizing Radiation to Light

Contact Info

Product

Resources

About

Deciphering the Microstructure and Energy-Level Splitting of Tm³⁺-Doped Yttrium Aluminum Garnet

Deciphering the Microstructure and Energy-Level Splitting of Tm³⁺-Doped Yttrium Aluminum Garnet

Transparency and Photoluminescence of Gas-Pressure Sintered Lu-α-SiAlON:Ce³⁺ Ceramics