In this work, aluminum doped La₂O₃ thin films deposited by the spray pyrolysis technique, are investigated by many characterization techniques. First, XRD spectra reveal the presence of two phases. A dominant cubic phase is obtained for pure La₂O₃ with (220) preferential orientation. The second hexagonal phase with (004) orientation is present in all doped samples. It is found that Al doping induces a perovskite crystalline structure identified as lanthanum aluminate (LaAlO₃). Second, FTIR spectra include the main peaks of La-O bonds related to La₂O₃ structure. Photoluminescence (PL) shows a good enhancement by Al doping related to LaAlO₃ nanoparticles. Finally, the surface wettability measurements corroborate the hydrophobic character of all doped samples.

中文翻译：

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用于润湿性应用的掺铝 La2O3 薄膜的合成和物理研究

在这项工作中，通过多种表征技术对通过喷雾热解技术沉积的铝掺杂La ₂ O ₃薄膜进行了研究。首先，XRD 谱揭示了两相的存在。对于具有(220)择优取向的纯La ₂ O ₃获得了主要的立方相。所有掺杂样品中都存在具有 (004) 取向的第二六方相。研究发现，Al 掺杂诱导了钙钛矿晶体结构，被确定为铝酸镧（LaAlO ₃）。_{其次，FTIR 光谱包括与La 2} O ₃结构相关的La-O键的主峰。_{光致发光（PL）表现出与LaAlO 3}纳米粒子相关的Al掺杂的良好增强。最后，表面润湿性测量证实了所有掺杂样品的疏水特性。