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Compositional Effects and Optical Properties of P 2 O 5 Doped Magnesium Silicate Mesoporous Thin Films
Arabian Journal for Science and Engineering ( IF 2.9 ) Pub Date : 2020-11-11 , DOI: 10.1007/s13369-020-05067-4
Amany M. El Nahrawy , Ali B. Abou Hammad , A. M. Mansour

Mesoporous P2O5 doped magnesium silicate (MS-P) thin films were prepared using the activated sol–gel method and calcinated at different temperatures (200, 300, and 400 °C). The effect of both P2O5 content, and the calcinating temperature on the thin films structure, morphology, FTIR, and UV–Vis optical properties, was examined. The structural results demonstrate that the changing of the P2O5 content ratio and the temperature of preparation have significant effects on crystallization and the internal structure. All films were found to have a relative value of transmittance that reaches or exceeds about 90% in the visible range. The optical band gap shows a blue shift with increasing of the P2O5 content as well as with calcinating temperature increase. The refractive index is nearly constant and uniform in the overall visible zone for all samples. The optical conductivity shows nearly relative values and similar behaviors in all P2O5 contents at all calcinating temperatures, where it is constant at low energies and increases at higher incident photon energies.



中文翻译:

P 2 O 5掺杂硅酸镁中孔薄膜的组成效应和光学性质

使用活化溶胶-凝胶法制备了介孔掺杂P 2 O 5的硅酸镁(MS-P)薄膜,并在不同温度(200、300和400°C)下煅烧。研究了P 2 O 5含量和煅烧温度对薄膜结构,形貌,FTIR和UV-Vis光学性能的影响。结构结果表明,P 2 O 5的变化含量比和制备温度对结晶和内部结构有重要影响。发现所有膜的透射率的相对值在可见光范围内达到或超过约90%。随着P 2 O 5含量的增加以及煅烧温度的增加,光学带隙显示出蓝移。对于所有样品,折射率在整个可见光区几乎恒定且均匀。在所有煅烧温度下,所有P 2 O 5含量中的光导率都显示出几乎相对的值和相似的行为,其中在低能量下恒定,而在较高入射光子能量下则增加。

更新日期:2020-11-12
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