Abstract Luminescent ions doped lead free ferroelectric ceramics are the potential candidates to the widespread application of optoelectronic devices due to the coupling between their unique photoluminescence and inherent ferroelectric performance. In this work, the tunable photoluminescence response is successfully achieved in (1-x)Na0·5Bi0·5TiO3-xCaTiO3: Eu3+ (NBT-xCT: Eu3+, x=0.07, 0.1) via electric field poling. It is found that the enhancement of photoluminescence intensity became apparent for polarized NBT-0.07CT: Eu3+, wherein x=0.07 is near the morphotropic phase boundary region. However, for NBT-0.1CT: Eu3+ ceramic with a morphotropic phase boundary, the variation trend of the emission intensity after electric field poling is opposite. These results are ascribed to the lattice distortion and phase transition induced by an external field poling, which originates from ferroelectric and structural instability near and in the morphotropic phase boundary of NBT-xCT: Eu3+ (x=0.07, 0.1) ceramics.

中文翻译：

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在 Eu3+ 掺杂的 (1-x)Na0.5Bi0.5TiO3-xCaTiO3 (x=0.07, 0.1) 压电陶瓷中，成分相关的电场诱导光致发光调制

摘要 发光离子掺杂的无铅铁电陶瓷由于其独特的光致发光与固有的铁电性能之间的耦合，是光电器件广泛应用的潜在候选材料。在这项工作中，通过电场极化在 (1-x)Na0·5Bi0·5TiO3-xCaTiO3: Eu3+ (NBT-xCT: Eu3+, x=0.07, 0.1) 中成功实现了可调光致发光响应。发现对于偏振NBT-0.07CT:Eu3+，光致发光强度的增强变得明显，其中x=0.07接近同向性相边界区域。然而，对于NBT-0.1CT：具有同向性相界的Eu3+陶瓷，电场极化后发射强度的变化趋势相反。