Characterization of scintillation properties of Nd-doped Bi4Ge3O12 single crystals with near-infrared luminescence

Okazaki, Kai; Onoda, Daichi; Fukushima, Hiroyuki; Nakauchi, Daisuke; Kato, Takumi; Kawaguchi, Noriaki; Yanagida, Takayuki

doi:10.1007/s10854-021-06686-9

Cited by 19 publications

(14 citation statements)

References 38 publications

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“…The 0.1% Tm-doped BGO showed a relatively high QY compared with BGO doped with other rare earths, because the QYs of Nd-, Er-, Pr-, and Yb-doped BGO samples with the optimum doping concentration in the NIR range were respectively reported to be 43, 86, 35, and 26%. (39)(40)(41)(42) The PL decay curves of the samples are shown in Fig. 4.…”

Section: Resultsmentioning

confidence: 99%

Radiation-induced Luminescence Properties of Tm-doped Bi4Ge3O12 Single Crystals

Okazaki¹,

Nakauchi²,

Fukushima³

et al. 2023

Sensors and Materials

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We grew 0.1, 0.5, and 1% Tm-doped Bi 4 Ge 3 O 12 single crystals by the floating zone method. Their photoluminescence and scintillation properties were investigated in the range from visible to near-IR. Luminescence spectra and decay times consistent with the transitions of Tm 3+ were confirmed. X-ray-irradiated dose rate response properties were evaluated using the prepared samples and an InGaAs photodiode. The 1% Tm-doped sample showed the widest dynamic range (0.03-60 Gy/h) among the prepared samples.

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Section: Resultsmentioning

confidence: 99%

Radiation-induced Luminescence Properties of Tm-doped Bi4Ge3O12 Single Crystals

Okazaki¹,

Nakauchi²,

Fukushima³

et al. 2023

Sensors and Materials

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“…To date, only a few compounds have been commercially used for ionizing radiation detection. For instance, high-purity germanium (HPGe), , Si, , a -Se, − cadmium telluride (CdTe, CT), zinc-alloyed CdTe (Cd (1‑ x ) Zn x Te, 0 < x < 0.2, CZT), − lead iodide (PbI 2 ), − and mercury iodide (HgI 2 ) − are widely used for direct detectors; bismuth germanium oxide (Bi 4 Ge 3 O 12 ) (BGO), thallium-activated cesium iodide (CsI:Tl), − and terbium-doped gadolinium oxysulfide (GOS:Tb) are dominantly used as scintillators for indirect detectors. However, these compounds suffer from a variety of issues, such as large leakage currents, , high manufacturing cost, ,− poor mechanical properties, , relative compound toxicity, and progressive degradation over time due to the polarization phenomenon. , In a nutshell, despite enormous efforts, developing new materials with high performance, low manufacturing cost, and room-temperature operation ability for radiation detection has remained a challenge over the past decades.…”

Section: Introductionmentioning

confidence: 99%

Recent Development of Halide Perovskite Materials and Devices for Ionizing Radiation Detection

Deng

Ouyang

et al. 2023

Chem. Rev.

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Ionizing radiation such as X-rays and γ-rays has been extensively studied and used in various fields such as medical imaging, radiographic nondestructive testing, nuclear defense, homeland security, and scientific research. Therefore, the detection of such highenergy radiation with high-sensitivity and low-cost-based materials and devices is highly important and desirable. Halide perovskites have emerged as promising candidates for radiation detection due to the large light absorption coefficient, large resistivity, low leakage current, high mobility, and simplicity in synthesis and processing as compared with commercial silicon (Si) and amorphous selenium (a-Se). In this review, we provide an extensive overview of current progress in terms of materials development and corresponding device architectures for radiation detection. We discuss the properties of a plethora of reported compounds involving organic−inorganic hybrid, all-inorganic, all-organic perovskite and antiperovskite structures, as well as the continuous breakthroughs in device architectures, performance, and environmental stability. We focus on the critical advancements of the field in the past few years and we provide valuable insight for the development of next-generation materials and devices for radiation detection and imaging applications.

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“…Therefore, inorganic scintillators having large Z eff and fast decay time, such as Tl:NaI (Z eff ~51), Bi 4 Ge 3 O 12 (Z eff ~75), Ce:Gd 2 SiO 5 (Z eff ~59), and Ce:Lu 2 SiO 5 (LSO, Z eff ~66), were historically employed in PET. (11)(12)(13) However, with the progress of techniques such as the invention of time-of-flight PET/computed tomography (14,15) and positron emission mammography, (16) higher performance, especially high LY with fast decay time, has been required for scintillators.…”

Section: Introductionmentioning

confidence: 99%

Scintillation Properties of an Organic–Inorganic Lead Iodide Perovskite Single Crystal Having Quantum Well Structures

Okazaki¹,

Onoda²,

Nakauchi³

et al. 2022

Sensors and Materials

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A (C 6 H 5 C 2 H 4 NH 3 ) 2 PbI 4 crystal was prepared to investigate its photoluminescence (PL) and scintillation properties. Two PL emission peaks at 525 and 560 nm derived from the recombination of excitons were observed. The obtained PL decay curve was approximated from the sum of three exponential decay functions related to the excitonic luminescence. Under X-ray irradiation, the excitonic emission at 560 nm from shallow trap centers was observed, and the X-ray induced scintillation decay times were 0.8, 6.0, and 37 ns. The full energy peak was observed under 241 Am α-ray (5.5 MeV) irradiation, and the light yield was estimated to be ~2900 ph/5.5 MeV-α.

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Characterization of scintillation properties of Nd-doped Bi4Ge3O12 single crystals with near-infrared luminescence

Cited by 19 publications

References 38 publications

Radiation-induced Luminescence Properties of Tm-doped Bi4Ge3O12 Single Crystals

Radiation-induced Luminescence Properties of Tm-doped Bi4Ge3O12 Single Crystals

Recent Development of Halide Perovskite Materials and Devices for Ionizing Radiation Detection

Scintillation Properties of an Organic–Inorganic Lead Iodide Perovskite Single Crystal Having Quantum Well Structures

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