Photoluminescence of europium doped LiInO2 powder

Lithium‐indium oxide is one of the candidate materials as solid‐state scintillators for solar neutrinos due to an inverse β–‐decay of 115In to 115Sn. On the other hand, when doped with rare‐earth ions such as Eu3+ or Sm3+, it becomes a promising phosphor material. In this report we present a simple solid‐state procedure for preparation of LiInO2:Eu3+ powders. X‐ray diffraction confirmed prod‐uct in tetragonal structural form (space group: I41/amd) and no impurity phases were detected. Then, high resolution photoluminescence emission measurements were performed at room and low temperatures to find 5D0 → 7FJ. Emission kinetics from 5D0 level exhibited pure single exponential behavior with lifetime of about 1.5 ms. Maximum energy splitting of 7F1 manifold is recorded as a function of temperature (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)