Abstract
Dopant Concentration Dependence of Luminescence in Cu-doped Lithium Aluminophosphate Glasses
Highlights
Fluorescent materials have been used in personal dose monitoring devices,(1) radiation detectors for medical purposes such a PET or CT imaging,(2) environmental monitoring,(3) security,(4) oil logging,(5) and high-energy physics
When the luminescence material is irradiated by ionizing radiation, firstly, an energetic electron is ejected from the atom and generates a large number of secondary electrons via an interaction such as Coulomb scattering
Our group has reported on the addition of Ce or Ag to Li3PO4-Al(PO3)3 glasses so far and investigated the emission characteristics by irradiation with ionizing radiation.[14,15] Here, Cu was selected as the luminescence center for the reason mentioned earlier, and we investigated the photoluminescence (PL) and X-rayinduced scintillation properties of Cu-doped Li3PO4-Al(PO3)3 glasses
Summary
Fluorescent materials have been used in personal dose monitoring devices,(1) radiation detectors for medical purposes such a PET or CT imaging,(2) environmental monitoring,(3) security,(4) oil logging,(5) and high-energy physics. When the luminescence material is irradiated by ionizing radiation, firstly, an energetic electron is ejected from the atom and generates a large number of secondary electrons via an interaction such as Coulomb scattering. These secondary electrons immediately show light emission if they recombine with holes at localized luminescence centers, and such an immediate emission is called scintillation. The stable supply of rare-earth elements has become a big problem, and rare-earth-free materials have attracted much attention For such purpose, transition metal ions are one of the solutions since some of them can show efficient luminescence mainly due to 3d–3d transitions. We have focused on Cu ion as a dopant of luminescence materials
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