Optical and Scintillation Properties of YAlO3 Doped with Rare-Earths Emitting Near-infrared Photons

Abstract

Scintillators emitting near-infrared (NIR) photons have unique characteristics and have been attracting attention recently. For example, scintillators emitting NIR photons are expected to be effective tools for radiation dose monitoring in high-dose environments. In this study, YAlO 3 samples doped with various rare-earth ions (Er 3+ , Ho 3+ , Pr 3+ , and Tm 3+ ) were synthesized by the floating zone method and their scintillation properties from the UV to NIR range were evaluated. Regarding their scintillation detection property, the Er 3+ -doped sample indicated an approximately linear proportional relationship from 1 mGy to 10 Gy.

Photoluminescence and Scintillation Properties of Tb:GdTaO4 Crystals

“…GdTaO 4 crystals doped with Tb (0.1, 1, and 3%) were prepared by the floating zone (FZ) method (FZD0192, Canon Machinery), which is suitable for the fast crystal growth of oxide compounds. (28)(29)(30)(31)(32)(33) Mixed Gd 2 O 3 (99.99%), Ta 2 O 5 (99.99%), and Tb 4 O 7 (99.99%) powders were formed and sintered at 1100 °C for 8 h to synthesize a ceramic rod. After that, FZ growth was conducted with a pull-down speed of 5 mm/h.…”

X-ray-induced Luminescence Properties of Nd-doped GdVO4

“…Motivated by the above ideas, we have studied scintillating materials emitting NIR photons (700-1650 nm) including fluorides, sesquioxides, oxide garnets, and oxide perovskites. (20)(21)(22)(23) To expand the investigation on NIR-emitting scintillators, we synthesized Nd-doped GdVO 4 single crystals by the floating zone (FZ) method and evaluated their photoluminescence (PL) and scintillation properties in this study. Nd-doped GdVO 4 single crystals were studied because the vanadates are well-known phosphor and laser materials, (24)(25)(26)(27) and the scintillation properties of Nd-doped YVO 4 have already been studied.…”

Optical and Scintillation Properties of Nd-doped Strontium Yttrate Single Crystals

“…(11)(12)(13)(14)(15) In recent years, with the development of near-infrared (NIR) photodetectors, NIR-emitting scintillators have been studied. (16)(17)(18)(19)(20) NIR-emitting scintillators are expected to be used in biomedical imaging (21) and dose monitoring in nuclear power plants. (22) In biomedical imaging applications such as radiation therapy, fine particles of NIR-emitting scintillators are incorporated into the target.…”