Structural and optical properties of Eu-doped at the site of Sr and Sn in Sr2SnO4 layered perovskite

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI:10.1063/1.5113305

U. Kumar, D. Yadav, Gurudeo Nirala Shail Upadhyay

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引用次数: 1

Abstract

The structural and emission analysis of Sr2SnO4, Sr1.99Eu0.01SnO4, and Sr2Sn0.99Eu0.01O4 were analysed in detail. The thermal analysis of the mixture of raw materials reveals the reaction among the raw materials takes place around 1000°C. The Reitveld refinement of the x-ray diffraction data shows the solubility of Eu on both site of Sr2SnO4. Higher crystallite size and lattice strain were observed for Sr1.99Eu0.01SnO4 than Sr2Sn0.99Eu0.01O4, because Eu3+ acts as donor at Sr2+ site while as acceptor at Sn4+ site. Absences of any band associated with raw materials in Raman spectrum also confirm the monophasic nature of the sample. The photoluminescence (PL) spectra of Eu-doped samples exhibits strong peak at 612 nm ascribed to electric dipole transition 5D0→7F2 of Eu3+ shows higher peak intensity and width for Sr1.99Eu0.01SnO4 than Sr2Sn0.99Eu0.01O4.The structural and emission analysis of Sr2SnO4, Sr1.99Eu0.01SnO4, and Sr2Sn0.99Eu0.01O4 were analysed in detail. The thermal analysis of the mixture of raw materials reveals the reaction among the raw materials takes place around 1000°C. The Reitveld refinement of the x-ray diffraction data shows the solubility of Eu on both site of Sr2SnO4. Higher crystallite size and lattice strain were observed for Sr1.99Eu0.01SnO4 than Sr2Sn0.99Eu0.01O4, because Eu3+ acts as donor at Sr2+ site while as acceptor at Sn4+ site. Absences of any band associated with raw materials in Raman spectrum also confirm the monophasic nature of the sample. The photoluminescence (PL) spectra of Eu-doped samples exhibits strong peak at 612 nm ascribed to electric dipole transition 5D0→7F2 of Eu3+ shows higher peak intensity and width for Sr1.99Eu0.01SnO4 than Sr2Sn0.99Eu0.01O4.

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Sr2SnO4层状钙钛矿中Sr和Sn位点铕掺杂的结构和光学性质

详细分析了Sr2SnO4、Sr1.99Eu0.01SnO4和sr2sn0.99 eu0.010的结构和发射特性。原料混合物的热分析表明，原料之间的反应发生在1000°C左右。x射线衍射数据的Reitveld细化显示了Eu在Sr2SnO4的两个位点上的溶解度。Sr1.99Eu0.01SnO4的晶粒尺寸和晶格应变均高于sr2sn0.99 eu0.010，这是由于Eu3+在Sr2+位点上是给体，而在Sn4+位点上是受体。在拉曼光谱中没有任何与原料相关的波段，也证实了样品的单相性质。Eu3+的5D0→7F2电偶极跃迁导致了Eu3+在612 nm处的光致发光(PL)光谱，Sr1.99Eu0.01SnO4的峰强和峰宽均高于sr2sn0.99 eu0.010。详细分析了Sr2SnO4、Sr1.99Eu0.01SnO4和sr2sn0.99 eu0.010的结构和发射特性。原料混合物的热分析表明，原料之间的反应发生在1000°C左右。x射线衍射数据的Reitveld细化显示了Eu在Sr2SnO4的两个位点上的溶解度。Sr1.99Eu0.01SnO4的晶粒尺寸和晶格应变均高于sr2sn0.99 eu0.010，这是由于Eu3+在Sr2+位点上是给体，而在Sn4+位点上是受体。在拉曼光谱中没有任何与原料相关的波段，也证实了样品的单相性质。Eu3+的5D0→7F2电偶极跃迁导致了Eu3+在612 nm处的光致发光(PL)光谱，Sr1.99Eu0.01SnO4的峰强和峰宽均高于sr2sn0.99 eu0.010。

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DAE SOLID STATE PHYSICS SYMPOSIUM 2018

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