沸石咪唑盐骨架
微晶
无定形固体
晶格常数
薄膜
材料科学
带隙
纳米技术
金属有机骨架
分析化学(期刊)
化学
光电子学
衍射
结晶学
光学
物理化学
吸附
有机化学
物理
冶金
作者
Abdelaziz M. Aboraia,A.A.A. Darwish,Vladimir A. Polyakov,Elena A. Erofeeva,Vera V. Butova,H. Y. Zahran,A. F. Abd El‐Rehim,H. Algarni,I.S. Yahia,А. В. Солдатов
标识
DOI:10.1016/j.optmat.2019.109648
摘要
Zeolitic imidazolate frameworks (ZIF-8) thin films were fabricated via layer by a layer deposition method. The investigation of X-ray diffraction (XRD) of the ZIF-8 powder form was seen to be polycrystalline with a single cubic-phase structure. The lattice parameters and Miller index were calculated using Rietveld refinement by Fullprof software. XRD of ZIF-8 film demonstrates an amorphous structure. The morphology of the ZIF-8 films has therefore been studied with the scanning laser microscope method and found that the homogeneity and surface enhance with increasing the film thickness. On the other hand, it is found that ZIF-8 films have a direct electronic transition with two energy bandgaps (3.62 and 4.58 eV) and their values independent of the thickness of the films. The optical constants were calculated, and the refractive index esteems increment with expanding of the film thickness. This outcome might be credited to the interlude of the film in the preliminary phase of the deposition. The nonlinear optical constants for ZIF-8 film were calculated, and the third-order optical nonlinearity was expanded with expanding the film thickness.
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