Preparation and properties of La(3-)Dy BWO9 phosphors and La(3-)Dy BWO9/PMMA composite films

Hu, Shanshan; Hong, Ying; Lu, Shuai; Yao, Aihua; Li, Wei; Chu, Benli; He, Qinyu; Wang, CL; Wang, Yinzhen

doi:10.1016/j.ceramint.2022.08.193

Ceramics International

2022

DOI: 10.1016/j.ceramint.2022.08.193

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Preparation and properties of La(3-)Dy BWO9 phosphors and La(3-)Dy BWO9/PMMA composite films

Shanshan Hu

Ying Hong

Shuai Lu

et al.

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2024

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Luminescence Properties of Bi³⁺-Doped Gd₂O₃ Phosphor under UV and X-ray Excitation

Yang,

He,

Lai

et al. 2024

ACS Appl. Mater. Interfaces

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X-ray excited luminescence in scintillators plays a crucial role in applications ranging from medical diagnostics to industrial quality inspection and scientific research. This study explores the potential of Bi 3+ -doped Gd 2 O 3 phosphors as next-generation scintillators, leveraging their broad-spectrum emission characteristics to achieve higher light yields. We synthesized Gd 2 O 3 :Bi 3+ phosphors in two crystalline phases�cubic and monoclinic�using a high-temperature solid-phase method. These phosphors demonstrate varied applications, from backlighting displays to X-ray imaging of opaque and biological samples. Under UV light excitation, each phase exhibits distinct luminescence properties due to different Bi 3+ occupancy environments. The monoclinic phase, excited at λ ex = 370 nm, showed stronger luminescence and a broader emission peak (fwhm = 70 nm) with a higher photoluminescence quantum yield (67.94%), compared to the cubic phase, which under optimal conditions (λ ex = 377 nm) exhibited narrower peaks (fwhm = 40 nm) and a lower yield (44.41%). Notably, under X-ray excitation, the cubic phase outperformed with a higher light yield (48,900 photons/MeV) and lower detection limits (380 nGy•s −1 at λ em = 430 nm and 285 nGy•s −1 at λ em = 520 nm). Both phosphors were also embedded in PMMA to create thin films for X-ray imaging, achieving high-resolution outputs (14 lp•mm −1 ).

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Luminescence Properties of Bi³⁺-Doped Gd₂O₃ Phosphor under UV and X-ray Excitation

Yang,

He,

Lai

et al. 2024

ACS Appl. Mater. Interfaces

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show abstract

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Preparation and properties of La(3-)Dy BWO9 phosphors and La(3-)Dy BWO9/PMMA composite films

Cited by 1 publication

References 60 publications

Luminescence Properties of Bi³⁺-Doped Gd₂O₃ Phosphor under UV and X-ray Excitation

Luminescence Properties of Bi³⁺-Doped Gd₂O₃ Phosphor under UV and X-ray Excitation

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Preparation and properties of La(3-)Dy BWO9 phosphors and La(3-)Dy BWO9/PMMA composite films

Cited by 1 publication

References 60 publications

Luminescence Properties of Bi3+-Doped Gd2O3 Phosphor under UV and X-ray Excitation

Luminescence Properties of Bi3+-Doped Gd2O3 Phosphor under UV and X-ray Excitation

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Product

Resources

About

Luminescence Properties of Bi³⁺-Doped Gd₂O₃ Phosphor under UV and X-ray Excitation

Luminescence Properties of Bi³⁺-Doped Gd₂O₃ Phosphor under UV and X-ray Excitation