X-ray diffraction analysis by Williamson-Hall, Halder-Wagner and size-strain plot methods of CdSe nanoparticles- a comparative study
X-ray diffraction analysis by Williamson-Hall, Halder-Wagner and size-strain plot methods of CdSe nanoparticles- a comparative study
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DOI：
10.1016/j.matchemphys.2019.122021
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发表时间：
2020-01-01
影响因子：
4.6
通讯作者：
Das, Ratan
中科院分区：
文献类型：
--
作者：
Nath, Debojyoti;Singh, Fouran;Das, Ratan
以硒氢化钠和氯化镉为前驱体，采用化学法制备了纳米硒化镉。X射线衍射（XRD）研究证实了具有立方锌晶格结构的CdSe纳米颗粒的结晶性质，而透射电子显微镜（TEM）、扫描电子显微镜（SEM）和原子力显微镜（AFM）分析表明所制备的纳米颗粒的球形形态，具有约36 nm的平均尺寸。这里，已经使用Williamson-Hall（W-H）、尺寸-应变图（SSP）和Halder-Wagner方法（H-W）从XRD峰加宽分析来研究颗粒尺寸和固有应变。此外，在W-H方法中，已经考虑了不同的模型来确定物理和微观结构参数，例如应变、应力和能量密度。将由Williamson-Hall、Size-Strain、Halder-Wagner方法测定的平均粒径与HR-TEM、AFM和SEM分析进行比较。
Cadmium selenide (CdSe) nanoparticles have been prepared by chemical method using sodium hydrogen selenide precursor and cadmium chloride. X-ray diffraction (XRD) study confirms the crystalline nature of the CdSe nanoparticles with Cubic Zinc blende lattice structure, whereas transmission electron microscopy (TEM), scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis indicate the spherical morphology of the prepared nanoparticles, having an average size of approximately 36nm. Here, Williamson-Hall (W-H), Size-Strain Plot (SSP), and Halder-Wagner Method (H-W) have been used to investigate the particle size and the intrinsic strain from the XRD peak broadening analysis. Further, in W-H method, different models have been considered for the determination of physical and microstructural parameters such as strain, stress, and energy density. The average particle size that has been determined from Williamson-Hall, Size-Strain, Halder-Wagner Methods are compared with HR-TEM, AFM, and SEM analysis.