Investigation of scintillation properties of Hf-based oxide materials

Abstract

The scintillation properties of Hf-based oxide materials are reviewed briefly. In particular, we focused the undoped, Ti-doped, and rare-earth-doped HfO2, MHfO3 (M = Ca, Sr, and Ba), and RE2Hf2O7 (RE = La, Gd, and Lu). The properties explained here are scintillation spectra, scintillation decay, and light yield estimated by the measurement of the pulse height distribution. Further, the synthesis methods of Hf-based oxide material single crystals and transparent ceramics include in this review because the development of Hf-based oxide material scintillators is largely influenced by the advances in the synthesis technology of single crystals and transparent ceramics.

Photoluminescence and Radioluminescence Properties of Y3Al5O12 Doped with 3d-Transition Metal Ions

“…Although many scintillators have been studied in the last few decades, (4)(5)(6)(7) fundamental studies on novel scintillators still continue to achieve better performance than ever before. There have been reports on various types of scintillator, such as single crystals, (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21) nanocrystals, (22) crystalline films, (23) ceramics, (24)(25)(26)(27) glasses, (28)(29)(30)(31)(32)(33)(34)(35)(36)(37) plastics, (38) and organic-inorganic hybrid materials, (39)(40)(41)(42) even in the last few years. In terms of the luminescent center, specific dopants such as Ce, Eu, and Tl have been mainly used for commercial scintillators; however, other dopants are also of our interest.…”

First investigation of the morphological and luminescence properties of HfO2 nanoparticles synthesized by photochemical synthesis

“…The chance to create hafnia NPs with tailored luminescence qualities has been more and more attracting the materials science community towards the use in cutting edge technologies and in advanced radiooncological therapeutic protocols. 29,30 Notably, thanks to the high stopping power andhencethe ability to interact with ionizing radiation, luminescent hafnia NPs have been recently proposed as a key constituent of composite scintillators for the design of next generation scintillation detectors for applications in fast-timing techniques, such as advanced time of flight positron emission tomography (ToF-PET) and high energy physics experiments, or homeland security measures and border controls. [31][32][33][34] These composite scintillators are generally made with a dense nanoscintillator, like HfO 2 , coupled to a dye featuring high quantum yield and fast lifetime and a polymeric host matrix.…”

Luminescence in Anion-Deficient Hafnia Nanotubes

“…In addition, due to the high atomic mass of its cation, hafnia is an excellent solid-state matrix for doping with rare earth ions. This makes it possible to project up-to-date scintillation media and efficient light-emitting devices [8,9,11].…”