Photoluminescence Properties of Layered Perovskite-Type Strontium Scandium Oxyfluoride Activated With Mn.

Author(s) Kato, H.; Takeda, Y.; Kobayashi, M.; Kobayashi, H.; Kakihana, M.
Journal Front Chem
Date Published 2018
Abstract

In this research, we have found that layered perovskite titanate SrTiO doped with Mn exhibits photoluminescence even at room temperature despite no luminescence from Mn-doped SrTiO with a three-dimensional bulky perovskite structure. The relative position of t orbital of Mn to the valence band is a key factor for appearance of Mn-emission in SrTiO:Mn. This result suggested usefulness of layered perovskite-type materials as hosts for Mn-activated phosphors than the bulky perovskite-type materials. Our investigation into photoluminescence of Mn-doped layered perovskite compounds has revealed that strontium scandium oxyfluoride SrScOF activated with Mn exhibits Mn-emission with a peak at 697 nm under excitation at 300-600 nm and its emission intensity is much stronger than that of SrTiO:Mn. The internal and external quantum yields of SrScOF:Mn were determined to be 50.5 and 43.5% under excitation at 345 nm, respectively.

DOI 10.3389/fchem.2018.00467
ISSN 2296-2646
Citation Kato H, Takeda Y, Kobayashi M, Kobayashi H, Kakihana M. Photoluminescence Properties of Layered Perovskite-Type Strontium Scandium Oxyfluoride Activated With Mn. Front Chem. 2018;6:467.

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