About 20 μm thick Ce-doped Lu3Al5O12 thin films grown by Liquid Phase Epitaxy and thin plates of similar thickness
prepared by mechanical cutting and polishing from Czochralski grown crystals are used in 2D-imaging experiment down
to μm 2D-resolution. Their scintillation response is also measured under α-particle excitation and performance of film
and bulk material is mutually compared. Furthermore, scintillation and thermoluminescence characteristics of UV
emitting Sc-doped LuAG grown by Czochralski method are presented since this system is a candidate material for UV
emission-based 2D sensors with improved diffraction limit with respect to the presently used Ce-doped aluminum
garnets.
The work is dedicated to investigation of the luminescent properties of UV-emitting single crystalline films (SCF) based
on the Lu3Al5O12:La and Lu3Al5O12:Pr garnet and LuAlO3:Ce perovskite compounds grown by liquid phase epitaxy
method from the PbO-B2O3 flux onto Y3Al5O12 and YAlO3 substrates, respectively, for testing as scintillation screens in
high-resolution microimaging detectors used in applications with synchrotrons radiation. The first image with a spatial
resolution of about 1.5 μm of X-ray excited resolution target was obtained using only the UV part of the light of the
LuAG:La SCF scintillators. The possible ways for improvement of figure-of-merit of UV emitting SCF scintillators and
increase of spatial resolution of the detector are discussed.
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