Researches on solids heterojunctions has proven to be an important field for technological applications due to synergism achieved by interface phenomena. In this work, we present an understanding of SrTiO₃/TiO₂ interface and its effects on structural and microstructural characteristics, and relate them to photoluminescence properties of heterojunctions obtained by a simple method. It was observed that SrTiO₃ proportion directly influences the structural order-disorder, as observed by X-Ray diffraction, Raman spectroscopy and Transmission electron microscopy. Photoluminescence behavior of heterojunction with 1% of SrTiO₃ showed a shift to blue emission region compared to TiO₂, and enhanced of emission intensity compared to SrTiO₃, resulted from defects generated by interface effects, attracting possible applications on selective color emitter. Therefore, we conclude that in same materials phases, nature and concentration of structural defects has strong dependence of SrTiO₃ concentration, which leads to different photoluminescence properties.

由于界面现象的协同作用，固体异质结的研究已被证明是技术应用的重要领域。在这项工作中，我们提出了对SrTiO ₃ / TiO ₂界面及其对结构和微结构特征的影响的理解，并将它们与通过简单方法获得的异质结的光致发光性质相关。通过X射线衍射，拉曼光谱和透射电子显微镜观察到，观察到SrTiO _3的比例直接影响结构的无序。与TiO ₂相比，含1％SrTiO ₃的异质结的光致发光行为向蓝光发射区转移由于界面效应产生的缺陷，与SrTiO ₃相比，其发射强度有所提高，从而吸引了可能在选择性彩色发射器上的应用。因此，我们得出结论，在相同的材料相中，结构缺陷的性质和浓度对SrTiO ₃浓度具有很强的依赖性，从而导致不同的光致发光性能。