Isik M, Yildirim T, Gasanly N M
Department of Biomedical Engineering, Faculty of Engineering and Architecture, İzmir Bakırçay University, İzmir, Türkiye.
Biomedical Technologies Design Application and Research Center, İzmir Bakırçay University, İzmir, Türkiye.
Luminescence. 2025 May;40(5):e70199. doi: 10.1002/bio.70199.
The development of efficient thermoluminescent materials is essential for precise radiation dosimetry. In this study, yttrium-doped ZnO (Y:ZnO) nanoparticles were synthesized and systematically analyzed to explore their structural and thermoluminescence (TL) properties. X-ray diffraction confirmed the preservation of the hexagonal ZnO phase, while transmission electron microscopy revealed well-dispersed nanoparticles. TL measurements exhibited a strong dose-dependent response, with glow curves showing multiple peaks associated with distinct trapping centers. Deconvolution analysis identified three primary trap levels with activation energies of 0.77, 1.12, and 1.29 eV, indicating the presence of deep and shallow traps. The TL intensity followed a linear trend with radiation dose, suggesting the suitability of Y:ZnO nanoparticles for dosimetric applications. Photoluminescence (PL) analysis was conducted to investigate the influence of yttrium doping on the optical properties of ZnO nanoparticles, and it was found that Y doping significantly enhanced defect-related emissions. These findings highlight the potential of Y:ZnO as a promising candidate for advanced radiation sensing technologies.
高效热释光材料的开发对于精确的辐射剂量测定至关重要。在本研究中，合成了钇掺杂的ZnO（Y:ZnO）纳米颗粒，并对其进行了系统分析，以探索其结构和热释光（TL）特性。X射线衍射证实了六方ZnO相的保留，而透射电子显微镜显示纳米颗粒分散良好。TL测量显示出强烈的剂量依赖性响应，发光曲线显示出与不同俘获中心相关的多个峰。去卷积分析确定了三个主要陷阱能级，其激活能分别为0.77、1.12和1.29 eV，表明存在深陷阱和浅陷阱。TL强度随辐射剂量呈线性趋势，表明Y:ZnO纳米颗粒适用于剂量测定应用。进行了光致发光（PL）分析，以研究钇掺杂对ZnO纳米颗粒光学性质的影响，发现Y掺杂显著增强了与缺陷相关的发射。这些发现突出了Y:ZnO作为先进辐射传感技术有前途候选材料的潜力。
