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Spectroscopic Study of Eu 3+ -Doped Magnesium Lanthanum Phosphate (MLPO) Films on SiO 2 Substrate
Silicon ( IF 3.4 ) Pub Date : 2021-01-07 , DOI: 10.1007/s12633-020-00855-x
Amany M. El Nahrawy , A. M. Mansour , Ali B. Abou Hammad

The distinctive optical band gap and photoluminescence of sol-gel Eu3+-doped magnesium lanthanum phosphate thin films on quartz (SiO2) substrate were successfully investigated. Effects of Eu3+ on the various spectroscopic parameters, including FTIR, transmittance, absorption coefficient, optical energy gap, refractive index, dielectric constant, and luminescence were explored. FT-IR measurements are achieved for the undoped and Eu3+-doped films which reinforce the excess oxygens from the MgO, La2O3, and Eu2O3 oxide supports the formation of MLPO and Eu-doped MLPO groups in the tetrahedral phosphate network. The transmittances, reflectance, refractive index, and dielectric constant show a decreasing behavior with increasing the Eu content in the MLP matrix while the absorption coefficient and energy gap show an increase. The emission spectra of Eu-doped MgO:La2O3:P2O5 shows the characteristic electronic transitions of Eu3+ ions in phosphorous-based films.



中文翻译:

SiO 2基体上掺Eu 3+的磷酸镁镧(MLPO)薄膜的光谱研究

成功地研究了石英(SiO 2)衬底上掺有溶胶-凝胶Eu 3+的磷酸镁镧镁薄膜的独特光学带隙和光致发光。探索了Eu 3+对各种光谱参数的影响,包括FTIR,透射率,吸收系数,光能隙,折射率,介电常数和发光。对于未掺杂的薄膜和Eu 3+掺杂的薄膜,可实现FT-IR测量,该薄膜可增强MgO,La 2 O 3和Eu 2 O 3中的过量氧气氧化物支持四面体磷酸盐网络中MLPO和Eu掺杂MLPO基团的形成。透射率,反射率,折射率和介电常数随着MLP基体中Eu含量的增加而表现出下降的行为,而吸收系数和能隙则表现出上升的趋势。Eu掺杂的MgO:La 2 O 3:P 2 O 5的发射光谱显示了磷基薄膜中Eu 3+离子的特征性电子跃迁。

更新日期:2021-01-07
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