Cooperative-luminescence-assisted single-band upconverted red emission in Er3+ and Yb3+ co-doped MgAlON transparent ceramic

Chen, Bowen; Wang, Bin; Jing, Zhengyang; Gao, Pan; Wang, Hao; Tu, Bingtian; Wang, Weimin; Fu, Zhengyi

doi:10.1016/j.jeurceramsoc.2023.09.047

Journal of the European Ceramic Society

2024

DOI: 10.1016/j.jeurceramsoc.2023.09.047

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Cooperative-luminescence-assisted single-band upconverted red emission in Er3+ and Yb3+ co-doped MgAlON transparent ceramic

Bowen Chen,

Bin Wang,

Zhengyang Jing

et al.

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2024

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CRN synthesis mechanism of high sinterability MgAlON powder for fast fabrication of highly transparent ceramics

Yu,

Guo,

Shan

et al. 2024

J Am Ceram Soc.

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Utilizing γ‐Al2O3, MgO, and black carbon powders as starting materials, single‐phase magnesium aluminum oxynitride (MgAlON) powders with excellent sinterability were successfully synthesized by carbothermal reduction and nitridation (CRN) method, and the CRN synthesis mechanism was investigated through analyzing phase assemblage and morphology of the powders during heating. As heating to 1700°C, single‐phase MgAlON is obtained, while its O/N ratio can be adjusted by controlling the composition of starting mixture and the CRN process. The MgAlON powders with O/N ratio of 9.52–11.39 (using the mixture with 8.6 wt.% MgO and 5.2 wt.% carbon black, and prepared at 1700°C for 90–150 min or 1720°C for 120 min) exhibit high sinterability. These powders were successfully fast pressureless sintered into ceramics with high transmittance (>80%@3750 nm) at 1880°C for 2.5 h. During the heating process for preparing MgAlON powder, magnesium aluminate spinel (MAS) is first formed at <1500°C, then at 1500–1600°C, along with formation of AlN via CRN and its instantaneous solid solution with MAS, MgAlON is obtained. The phase assemblage and morphology comparison between the Al2O3–MgO–C, Al2O3–MgO, and Al2O3–C powders during heating indicates that carbon and MAS act in concert to inhibit the growth of Al2O3, which contribute to the rapid formation MgAlON and high sinterability of prepared MgAlON powders.

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CRN synthesis mechanism of high sinterability MgAlON powder for fast fabrication of highly transparent ceramics

Yu,

Guo,

Shan

et al. 2024

J Am Ceram Soc.

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show abstract

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Cooperative-luminescence-assisted single-band upconverted red emission in Er3+ and Yb3+ co-doped MgAlON transparent ceramic

Cited by 1 publication

References 44 publications

CRN synthesis mechanism of high sinterability MgAlON powder for fast fabrication of highly transparent ceramics

CRN synthesis mechanism of high sinterability MgAlON powder for fast fabrication of highly transparent ceramics

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