In view of the significant impact of color centers on the physical and chemical properties of materials, studies on the origin of such color centers are needed. In this article, detailed crystal structure analysis and compositional characterization of CeAlO3 was carried out by applying XRD, XPS, HRTEM, STEM-EDS and ICP-OES techniques. The results revealed that crystal defects may be the main cause of color centers. The existence of oxygen and aluminum vacancy was proved and confirmed by the application of XPS, ICP-OES and STEM-EDS characterization methods. Overall, it unlikely that a single crystal defect would generate the yellow-green color of CeAlO3 crystals.

中文翻译：

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钙钛矿氧化物CeAlO3中色心的起源。

考虑到色心对材料的物理和化学性质的重大影响，需要研究这种色心的来源。本文通过应用XRD，XPS，HRTEM，STEM-EDS和ICP-OES技术对CeAlO3进行了详细的晶体结构分析和组成表征。结果表明，晶体缺陷可能是色心的主要原因。通过XPS，ICP-OES和STEM-EDS表征方法的应用证明并确认了氧和铝空位的存在。总体而言，单晶缺陷不太可能产生CeAlO3晶体的黄绿色。