Luminescence of La0.2Y1.8O3 nanostructured scintillators

Wei Chen; Haiqing Tu; Sunil Sahi; Defeng Mao; Rasool Kenarangui; Junming Luo; Peng Jin; Shuman Liu; Lun Ma; Andrew Brandt; Alex Weiss

doi:10.1364/OL.39.005705

Luminescence of La_0.2Y_1.8O₃ nanostructured scintillators

Wei Chen^*, Haiqing Tu, Sunil Sahi, Defeng Mao, Rasool Kenarangui, Junming Luo, Peng Jin, Shuman Liu, Lun Ma, Andrew Brandt, Alex Weiss

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

For the first time, transparent La_0.2Y_1.8O₃ nanostructured polycrystalline scintillators were fabricated by sintering nanoparticle powders at high temperatures and their scintillation properties are reported. La_0.2Y_1.8O₃ is a host material that has never been investigated as scintillators for radiation detection. Our observations found that La_0.2Y_1.8O₃ has an intense scintillation luminescence, a detection efficiency higher than that of YAG:Ce and a comparable energy resolution to NaI and CsI scintillators. In addition, La_0.2Y_1.8O₃ is stable and has luminescence decay lifetime in the picosecond range which is favorable for radiation detection. The luminescence of La_0.2Y_1.8O₃has a large Stokes-shift and a large emission bandwidth, and the luminescence is highly temperature dependent. Different from most doped scintillators, the luminescence of La_0.2Y_1.8O₃ is most likely from the self-trapped excitons. The discovery of La_0.2Y_1.8O₃ scintillators opens a new door for the research of new materials for radiation detection.

Original language	English
Pages (from-to)	5705-5708
Number of pages	4
Journal	Optics Letters
Volume	39
Issue number	19
DOIs	https://doi.org/10.1364/OL.39.005705
Publication status	Published - 1 Oct 2014
Externally published	Yes

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title = "Luminescence of La0.2Y1.8O3 nanostructured scintillators",

abstract = "For the first time, transparent La0.2Y1.8O3 nanostructured polycrystalline scintillators were fabricated by sintering nanoparticle powders at high temperatures and their scintillation properties are reported. La0.2Y1.8O3 is a host material that has never been investigated as scintillators for radiation detection. Our observations found that La0.2Y1.8O3 has an intense scintillation luminescence, a detection efficiency higher than that of YAG:Ce and a comparable energy resolution to NaI and CsI scintillators. In addition, La0.2Y1.8O3 is stable and has luminescence decay lifetime in the picosecond range which is favorable for radiation detection. The luminescence of La0.2Y1.8O3has a large Stokes-shift and a large emission bandwidth, and the luminescence is highly temperature dependent. Different from most doped scintillators, the luminescence of La0.2Y1.8O3 is most likely from the self-trapped excitons. The discovery of La0.2Y1.8O3 scintillators opens a new door for the research of new materials for radiation detection.",

author = "Wei Chen and Haiqing Tu and Sunil Sahi and Defeng Mao and Rasool Kenarangui and Junming Luo and Peng Jin and Shuman Liu and Lun Ma and Andrew Brandt and Alex Weiss",

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year = "2014",

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T1 - Luminescence of La0.2Y1.8O3 nanostructured scintillators

AU - Chen, Wei

AU - Tu, Haiqing

AU - Sahi, Sunil

AU - Mao, Defeng

AU - Kenarangui, Rasool

AU - Luo, Junming

AU - Jin, Peng

AU - Liu, Shuman

AU - Ma, Lun

AU - Brandt, Andrew

AU - Weiss, Alex

PY - 2014/10/1

Y1 - 2014/10/1

N2 - For the first time, transparent La0.2Y1.8O3 nanostructured polycrystalline scintillators were fabricated by sintering nanoparticle powders at high temperatures and their scintillation properties are reported. La0.2Y1.8O3 is a host material that has never been investigated as scintillators for radiation detection. Our observations found that La0.2Y1.8O3 has an intense scintillation luminescence, a detection efficiency higher than that of YAG:Ce and a comparable energy resolution to NaI and CsI scintillators. In addition, La0.2Y1.8O3 is stable and has luminescence decay lifetime in the picosecond range which is favorable for radiation detection. The luminescence of La0.2Y1.8O3has a large Stokes-shift and a large emission bandwidth, and the luminescence is highly temperature dependent. Different from most doped scintillators, the luminescence of La0.2Y1.8O3 is most likely from the self-trapped excitons. The discovery of La0.2Y1.8O3 scintillators opens a new door for the research of new materials for radiation detection.

AB - For the first time, transparent La0.2Y1.8O3 nanostructured polycrystalline scintillators were fabricated by sintering nanoparticle powders at high temperatures and their scintillation properties are reported. La0.2Y1.8O3 is a host material that has never been investigated as scintillators for radiation detection. Our observations found that La0.2Y1.8O3 has an intense scintillation luminescence, a detection efficiency higher than that of YAG:Ce and a comparable energy resolution to NaI and CsI scintillators. In addition, La0.2Y1.8O3 is stable and has luminescence decay lifetime in the picosecond range which is favorable for radiation detection. The luminescence of La0.2Y1.8O3has a large Stokes-shift and a large emission bandwidth, and the luminescence is highly temperature dependent. Different from most doped scintillators, the luminescence of La0.2Y1.8O3 is most likely from the self-trapped excitons. The discovery of La0.2Y1.8O3 scintillators opens a new door for the research of new materials for radiation detection.

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DO - 10.1364/OL.39.005705

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JO - Optics Letters

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ER -

Luminescence of La_0.2Y_1.8O₃ nanostructured scintillators

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