In the present work, new nanocomposites of CeF₃@ZnS with various weight ratios (1:1, 1:3, 1:5 and 1:7) were synthesized by wet chemistry method and characterized by using XRD, SEM, EDX, and TEM techniques. The optical spectra of the prepared nanocomposites were measured at room temperature and analyzed here for the first time. The obtained results showed an enhancement in energy transfer rate from CeF₃ to ZnS nanoparticles due to large overlapping of CeF₃ emission and ZnS absorption spectra. The presence of ZnS nanoparticles around CeF₃ nanoparticle as core–shell structure lead to shift a defect state originated from emission peak at 480 nm in pure ZnS nanoparticles. Effect of ZnS nanoparticle amount, in photoluminescence properties of CeF₃@ZnS nanocomposite, was investigated and obtained results are presented and discussed.

中文翻译：

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CeF 3 @ZnS纳米复合材料的制备，表征和光致发光性能

在本工作中，通过湿化学方法合成了具有不同重量比（1：1、1：3、1：5和1：7）的CeF ₃ @ZnS纳米复合材料，并通过XRD，SEM，EDX和TEM技术。在室温下测量制备的纳米复合材料的光谱，并在此进行首次分析。所获得的结果表明，由于CeF ₃发射和ZnS吸收光谱的大量重叠，从CeF ₃到ZnS纳米粒子的能量转移速率提高。CeF ₃周围存在ZnS纳米颗粒纳米颗粒作为核-壳结构导致缺陷状态发生偏移，该状态源自纯ZnS纳米颗粒中480 nm处的发射峰。研究了ZnS纳米颗粒数量对CeF ₃ @ZnS纳米复合材料光致发光性能的影响，并给出和讨论了所得结果。