X-ray diffraction analysis by Williamson-Hall, Halder-Wagner and size-strain plot methods of CdSe nanoparticles- a comparative study

• Published in: Materials chemistry and physics 2020-01, Vol.239, p.122021, Article 122021
• Main Authors: Nath, Debojyoti, Singh, Fouran, Das, Ratan
• Format: Article
• Language: English
• Subjects: Atomic force microscopy; Cadmium; Cadmium selenide; Cadmium selenides; Comparative studies; Cubic lattice; Flux density; Halder-wagner method; Microstructure; Morphology; Nanoparticles; Organic chemistry; Particle size; Scanning electron microscopy; Size; Transmission electron microscopy; Williamson-Hall; X-ray diffraction; Zincblende
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2019.122021

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 36 nm. 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. [Display omitted] •Water soluble MPA capped CdSe nanocrystals have been chemically synthesized.•XRD peak broadening analysis has been carried out by different models.•Different models are modified W–H Plot, SSP method and H–W method.•SSP and H–W method provide the best value for average size and intrinsic strain.•These results match well with the morphological analysis from TEM, AFM and SEM.