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首页> 外文期刊>Science and Technology of Advanced Materials >Electrophoretic deposition and photoluminescent properties of Eu-doped BaTiO_3 thin film from a suspension of monodispersed nanocrystallites
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Electrophoretic deposition and photoluminescent properties of Eu-doped BaTiO_3 thin film from a suspension of monodispersed nanocrystallites

机译：单分散纳米晶体悬浮液中Eu掺杂BaTiO_3薄膜的电泳沉积和光致发光性能

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摘要

Monodispersed Eu-doped BaTiO_3 nanocrystallites with a pseudo-cubic perovskite phase were successfully prepared using highly concentrated alkoxide solution under hydrothermal conditions at temperatures < 100℃. The obtained nanoparticles had a very narrow particle size distribution and the average value was about 10 nm. By dispersing a piece of BaTiO_3 bulk gel into mixed solvent of 2-methoxyethonal and acetylacetone, we obtained well-dispersed and stable suspensions of Eu-doped BaTiO_3 nanocrystallites with a high transmittance. Using these suspensions, nanostructured thin films with a low porosity and a smooth surface were synthesized on Pt/Ti/SiO_2/Si substrate by electrophoretic deposition. The obtained Eu-doped BaTiO_3 thin films showed strong, visible room temperature photoluminescence (PL) associated with Eu ions. The PL spectra had typical ones for Eu~(3+) band corresponding to ~5D_o-~7F_j electronic transitions with a maximum intensity at 613 nm.
机译：在水热条件下，温度<100℃的条件下，采用高浓度醇盐溶液成功制备了具有拟立方钙钛矿相的单分散Eu掺杂BaTiO_3纳米晶。所获得的纳米颗粒具有非常窄的粒度分布，并且平均值为约10nm。通过将一块BaTiO_3块状凝胶分散在2-甲氧基乙醛和乙酰丙酮的混合溶剂中，我们获得了具有高透射率的Eu掺杂BaTiO_3纳米晶体的分散良好且稳定的悬浮液。使用这些悬浮液，通过电泳沉积在Pt / Ti / SiO_2 / Si衬底上合成了低孔隙率和光滑表面的纳米结构薄膜。所获得的Eu掺杂BaTiO_3薄膜显示出与Eu离子相关的强可见室温光致发光（PL）。 PL光谱具有对应于〜5D_o-〜7F_j电子跃迁的Eu〜（3+）谱带的典型光谱，其最大强度为613 nm。

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