Growth and luminescent properties of TbAlO3: Mn single-crystalline films

✍ Scribed by Yu. Zorenko; V. Gorbenko; T. Vozniak; M. Batentschuk; A. Osvet; A. Winnacker

• Book ID: 105365486
• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 641 KB
• Volume: 207
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200925169

✦ Synopsis

Abstract

The paper is dedicated to the investigation of growth processes by liquid phase epitaxy (LPE) and the luminescent properties of single‐crystalline films (SCFs) of TbAlO~3~ terbium‐aluminum perovskite (TbAP) perovskite doped with manganese ions. We found that the Mn^2+^ and Mn^3+^ or even Mn^5+^ states can occur in TbAP:Mn SCF depending on the concentration of manganese ions in the 0.01–1.1 at.% range. The Mn^2+^ ions in TbAP host possess orange luminescence in the band peaked at 572 nm with a lifetime of 1.24 ms at 300 K that is caused by the ^4^T~1~ →^6^ A~1~ radiative transitions. The cascade energy‐transfer processes can be realized in TbAP:Mn SCF: (i) from 5d–4f states of Tb^3+^ cations to Mn^2+^ ions; (ii) from Mn^2+^ ions to 4f states of Tb^3+^ cations. The latest process strongly decreases the efficiency of Mn^2+^ luminescence in TbAlO~3~ perovskite with respect to the Tb~3~Al~5~O~12~ garnet host.