De Herval L.K.S.Tuncer Arslanlar Y.Ayvacikli M.Iikawa F.Nobrega J.A.Pizani P.S.Galvão Gobato Y.Can N.Henini M.De Godoy M.P.F.2025-04-102025-04-102015http://hdl.handle.net/20.500.14701/49310Structural and optical properties of erbium- and manganese-doped strontium aluminates (SrAl2O4) phosphor materials synthesized by a solid state reaction were investigated. The samples presented the fundamental optical transitions due to Er3+ and Mn2+ which are typical features of the well-diluted doping process. A significant enhancement of the Er3+ optical emission band at 1530 nm was observed when the matrix is co-doped with Mn. Photoluminescence intensity under ultraviolet excitation was three times larger as compared to samples without Mn content. A model of energy transfer mechanism from Mn2+ to Er3+ ions due to optical energy matching is proposed to explain the experimental results. This result, presented first time, can be applied as useful tool for developments in optical communications. © 2015 Elsevier B.V. All rights reserved.Article10.1016/j.jlumin.2015.02.031