(BZA)₂PbBr₄: A potential scintillator for photon-counting computed tomography detectors

Due to recent development in detector technology, photon-counting computed tomography (PCCT) has become a rapidly emerging medical imaging technology. Current PCCT systems rely on the direct conversion of X-ray photons into charge pulses, using CdTe, CZT, or Si semiconductor detectors. Indirect detection using ultrafast scintillators coupled...

Temperature dependent scintillation properties and mechanisms of (PEA)₂PbBr₄ single crystals

In this work the scintillation properties of PEA₂PbBr₄ are studied as function of temperature, accessing the potential use of these materials for low temperature applications. The scintillation properties and mechanism have been studied using a combination of temperature dependent photoluminescence emission and...

Li-Based Thermal Neutron Scintillator Research: Rb2LiYBr6 : Ce3+ and Other Elpasolites

Temperature Dependent Scintillation and Luminescence Characteristics of GdI3: Ce³+

Ce3+ activated LaBr3?xIx: High-light-yield and fast-response mixed halide scintillators

Here, we report the scintillation properties of LaBr3?xIx:5%Ce3+ with four different compositions of x, i.e., x = 0.75, 1.5, 2, and 2.25. Radioluminescence spectra reveal a shift of the emission wavelength with the LaBr3 to LaI3 ratio. LaBr1.5I1.5:5%Ce3+ shows the highest scintillation light yield of 58?000?photons/MeV, whereas LaBr0.75I2.25:5...

Cerium-doped barium halide scintillators for x-ray and ?-ray detections

Single crystals of Ce-activated BaCl2, BaBr2, and BaI2 were investigated under x-ray and ?-ray excitation. The Ce3+-related x-ray excited luminescence in BaBr2 shifts significantly to longer wavelengths upon increasing the doping level from 0.1% to 1%. In Ce-activated BaCl2 only a slight shift can be observed. BaI2 does not show any Ce3+-related...

Vacuum ultraviolet-ultraviolet and x-ray excited luminescence properties of Ba3Gd(BO3)3:Ce3+

The phosphors Ba3Gd(BO3)3:Ce3+ were prepared by a solid-state reaction technique at high temperature. The vacuum ultraviolet-ultraviolet and visible spectroscopic properties of the phosphors together with decay time curves are investigated and discussed. The spectroscopic properties are explained by occupancy of Ce3+ at two different Gd sites in...

Thermal-neutron scintillator: Ce3+ activated Rb2LiYBr6

Scintillation and luminescence characteristics of Rb2LiYBr6 doped with 0.1%, 0.5%, 1%, and 5%?Ce3+ are presented. Under optical and x-ray excitation, Ce3+ doublet emission is observed at 385 and 420 nm. Rb2LiYBr6:0.5%?Ce3+ shows very high thermal neutron scintillation light output of 83?000 photons/neutron. An excellent neutron peak resolution...

Europium-doped barium halide scintillators for x-ray and ?-ray detections

Single crystals of undoped or europium-doped barium chloride, bromide, and iodide were investigated under x-ray and ?-ray excitations. The Eu2+-related x-ray excited luminescence found in the Eu-doped barium halides occurs at 402, 404, and 425?nm for the chloride, bromide, and iodide, respectively. BaCl2:Eu2+ shows the best scintillation...

Luminescence and site occupancy of Ce3+ in Ba2Ca(BO3)2

Thermal quenching of Ce3+ emission in PrX3 (X = Cl, Br) by intervalence charge transfer

High-light-output scintillator for photodiode readout: LuI3:Ce3+

In this paper, we investigated the scintillation properties of LuI3:Ce3+. Radioluminescence, light output, energy resolution, and ?-scintillation decay are reported. We find an extremely high light output of 98?000±10?000?photons/MeV. LuI3:Ce3+ also gives a very high electron-hole (e-h) pair response when it is coupled with an avalanche...

Scintillation properties and anomalous Ce3+ emission of Cs2NaREBr6:Ce3+ (RE = La,Y,Lu)

Luminescence of Ce3+ activated fluoro-apatites M5(PO4)3F (M = Ca, Sr, Ba) under VUV—UV and x-ray excitation

Scintillation Properties of LuI3:Ce^3+-High Light Yield Scintillators