Abstract Nano-sized zinc selenide (ZnSe) particles were successfully fabricated using a chemical synthesis technique, in aqueous solution at room temperature. Sodium borohydride was used as a reagent for reduction and the Zn/Se ratio for the synthesis was varied to evaluate its influence on the microstructure and light absorption/emission properties . The ZnSe particles thus fabricated were analyzed by X-ray diffraction spectroscopy (XRD), transmission electron microscopy (TEM), ultraviolet–visible (UV-Vis) spectroscopy and photoluminescence spectroscopy (PL). Analysis of the XRD patterns showed that single-phase ZnSe was successfully synthesized, and the particle size based on TEM confirmed that the particles were nano-sized. The ZnSe nanoparticles absorbed UV–Vis light with wavelength shorter than 460 nm, the absorption wavelength of bulk ZnSe. As the Zn/Se ratio increased, the absorption edge wavelength in the UV–Vis spectra gradually shifted to 420 nm. This blue shift was estimated to be due to the broadening of absorption curves of the nanoparticles toward the shorter wavelength. The synthesized nanoparticles showed good structural and light absorption properties suggesting that ZnSe nanoparticles can be fabricated at room temperature without using organic solvents.

中文翻译：

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室温下水溶液中硒化锌纳米颗粒的简便合成与表征

摘要 使用化学合成技术在室温下在水溶液中成功制备了纳米尺寸的硒化锌 (ZnSe) 颗粒。硼氢化钠用作还原试剂，改变合成的 Zn/Se 比以评估其对微观结构和光吸收/发射特性的影响。通过 X 射线衍射光谱 (XRD)、透射电子显微镜 (TEM)、紫外-可见 (UV-Vis) 光谱和光致发光光谱 (PL) 分析由此制造的 ZnSe 颗粒。XRD图谱分析表明成功合成了单相ZnSe，基于TEM的粒径证实颗粒为纳米级。ZnSe 纳米颗粒吸收波长短于 460 nm（块状 ZnSe 的吸收波长）的 UV-Vis 光。随着 Zn/Se 比率的增加，UV-Vis 光谱中的吸收边波长逐渐移至 420 nm。估计这种蓝移是由于纳米颗粒的吸收曲线向较短波长变宽。合成的纳米粒子显示出良好的结构和光吸收特性，表明可以在室温下制造 ZnSe 纳米粒子，而无需使用有机溶剂。