Abstract
AbstractAdvanced functional materials currently have challenges in both material science and technology. In this work, the photoluminescence (PL) properties of lead-free ferroelectric Bi0.5Na0.5TiO3 materials were strongly enhanced using Sm0.5Na0.5TiO3 as impurities. Four strong PL peaks at 565 nm, 601 nm, 647 nm, and 712 nm were observed at room temperature, which was strongly related to the electron transition from 4G5/2 to 6H5/2, 6H7/2, 6H9/2, and 6H11/2 levels. Weak photoemission at around 788 nm was observed due to the transitions from 4G5/2 to 6H13/2 level. Our theoretical prediction showed that the complex band structures are dependent on the incorporation site of Sm3+ cations in the host Bi0.5Na0.5TiO3 crystal. We expected that the photoemission in rare-earth-doped lead-free ferroelectric materials could extend the functional materials for innovative electronic applications.KeywordsBi0.5Na0.5TiO3Rare-earth samariumLead-free ferroelectric
Published Version
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