Lu2O3-based storage phosphors. An (in)harmonious family

Kulesza, Dagmara; Bolek, Paulina; Bos, A.J.J.; Zych, Eugeniusz

doi:10.1016/j.ccr.2016.05.006

Cited by 37 publications

(40 citation statements)

References 90 publications

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“…This however, does not necessary mean that the latter composition is least efficient in energy storage. Since its TL occurs at highest temperatures it suffers the most from the thermal quenching as reported previously [16]. As might be expected then, due to the lowest TL signal, out of the three compositions the (Tb,Ti) ceramic storage phosphor is the least sensitive for the lowest doses.…”

Section: Dose Responsesupporting

confidence: 75%

“…Fabrication procedure of the materials was presented in detail previously [16]. In short, powders prepared by Pechini method were cold-pressed and sintered at 1700 °C for 5 hours in vacuum (Tb,Hf), air (Tb,Nb) or forming gas (Tb,Ti).…”

Section: Methodsmentioning

confidence: 99%

“…This makes the dosimeter response to the ionizing radiation similar to the response of tissues [15]. Therefore, the effective Z-number, Zeff, of the dosimeter should be possibly close to the Zeff-number of water (Zeff = 7.4), the main constituent of human body [16]. This condition explains the broad use of LiF-based dosimeters for which the Zeff = 8.2.…”

Section: Introductionmentioning

confidence: 98%

“…We have previously reported on thermoluminescent (TL) properties of a series of Lu2O3:Tb,M (M=Ca/Sr/Ba, Hf, Ti, Nb) sintered ceramics [21] [22][23] [16]. Their thermoluminescence characteristics were largely gathered following irradiation of the materials with shortwavelength UV radiation (250-320 nm).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

On energy storage of Lu2O3:Tb,M (M=Hf, Ti, Nb) sintered ceramics: Glow curves, dose-response dependence, radiation hardness and self-dose effect

Kulesza

Bos

Zych

2018

Journal of Alloys and Compounds

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Thermoluminescent properties and energy storage characteristics of Lu2O3:Tb,M (M=Hf, Ti, Nb) sintered ceramics induced by ionizing radiation are presented and discussed. Doseresponse dependence, radiation hardness and fading were studied. A linearity of the former exceeding seven orders of magnitude was confirmed for Lu2O3:Tb,Hf and Lu2O3:Tb,Nb ceramics. Lu2O3:Tb,Hf showed the best TL performance and also its fading was the lowest reaching 15 % over 7 hours and showed tendency to saturate. During the same period of time the Lu2O3:Tb,Ti, despite having TL at higher temperatures, lost about 25 % of the stored energy and the TL signal of Lu2O3:Tb,Nb faded by almost 40 % over 7 hours. First order TL kinetics was confirmed for all three compositions. A self-dose effect in Lu2O3:Tb,Hf due to a natural content of the radioactive isotope (2.6 %) was proved to be important for long-time reading of low doses.

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Section: Dose Responsesupporting

confidence: 75%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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On energy storage of Lu2O3:Tb,M (M=Hf, Ti, Nb) sintered ceramics: Glow curves, dose-response dependence, radiation hardness and self-dose effect

Kulesza

Bos

Zych

2018

Journal of Alloys and Compounds

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“…Radioluminescence: The temperature dependence of the RL spectra of Lu 2 O 3 :Tb NPs was measured up to 500 • C (Figure 11). As can be seen from this figure, the Tb 3+ luminescence disappeared at about 400 • C. This resulted from a thermal quenching which was reported for Lu 2 O 3 :Tb sintered ceramics to start right at room temperature [27]. Note that in this experiment, the dependence of RL intensity on temperature was to some extent distorted by the appearance of TL photons which contributed quite significantly in the range of~50-150 K (see Figure 10a).…”

Section: Of 12supporting

confidence: 58%

Radio-, Thermo- and Photoluminescence Properties of Lu2O3:Eu and Lu2O3:Tb Nanopowder and Film Scintillators

et al. 2019

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This work is dedicated to the preparation and characterization of the radio-, thermo-, and photoluminescent properties of Lu2O3:Eu and Lu2O3:Tb nanopowder (NPs) scintillators, prepared by means of hydrothermal processing, and their film analogues made of these NPs by the spin coating method. The luminescent properties of NPs and films were characterized by cathodoluminescence (CL), photoluminescence (PL), X-ray excited radioluminescence (RL), and thermoluminescence (TL) at low and high temperatures. In Lu2O3:Eu NPs and films, mostly the luminescence of Eu3+ ions occupying the C2 site of the host, with the most intensive peaks at 611.6 nm and a decay time of 1.5 ms, was observed. On the contrary, two types of Tb3+ centers in the C2 and C3i sites with the main emission lines at 542.4 and 544.0 nm and the corresponding 4f→5d excitation bands at 270 and 305 nm and decay times of t1/e = 2.17 and 3.96 ms were observed in the case of Lu2O3:Tb NPs and films. Indications were noted that Tb3+ in the C3i symmetry position was most active in the CL spectra of Lu2O3:Tb NPs and a respective film. Thermoluminescent peaks at 110 °C and 170 °C for Lu2O3:Eu NPs and at 75 °C and 120 °C in Lu2O3:Tb NPs were observed corresponding to the hole and electron traps, respectively. Significantly different onsets of temperature quenching of Eu3+ and Tb3+ luminescence in Lu2O3:Eu and Lu2O3:Tb NPs were found at ~90 °C and ~320 °C, respectively.

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Multimodal Tuning of Synaptic Plasticity Using Persistent Luminescent Memitters

Bian

Qin

et al. 2021

Advanced Materials

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Mimicking memory processes, including encoding, storing, and retrieving information, is critical for neuromorphic computing and artificial intelligence. Synaptic behavior simulations through electronic, magnetic, or photonic devices based on metal oxides, 2D materials, molecular complex and phase change materials, represent important strategies for performing computational tasks with enhanced power efficiency. Here, a special class of memristive materials based on persistent luminescent memitters (termed as a portmanteau of “memory” and “emitter”) with optical characteristics closely resembling those of biological synapses is reported. The memory process and synaptic plasticity can be successfully emulated using such memitters under precisely controlled excitation frequency, wavelength, pulse number, and power density. The experimental and theoretical data suggest that electron‐coupled trap nucleation and propagation through clustering in persistent luminescent memitters can explain experience‐dependent plasticity. The use of persistent luminescent memitters for multichannel image memorization that allows direct visualization of subtle changes in luminescence intensity and realization of short‐term and long‐term memory is also demonstrated. These findings may promote the discovery of new functional materials as artificial synapses and enhance the understanding of memory mechanisms.

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Lu2O3-based storage phosphors. An (in)harmonious family

Cited by 37 publications

References 90 publications

On energy storage of Lu2O3:Tb,M (M=Hf, Ti, Nb) sintered ceramics: Glow curves, dose-response dependence, radiation hardness and self-dose effect

On energy storage of Lu2O3:Tb,M (M=Hf, Ti, Nb) sintered ceramics: Glow curves, dose-response dependence, radiation hardness and self-dose effect

Radio-, Thermo- and Photoluminescence Properties of Lu2O3:Eu and Lu2O3:Tb Nanopowder and Film Scintillators

Multimodal Tuning of Synaptic Plasticity Using Persistent Luminescent Memitters

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