Study of optical and structural properties of CZTS thin films grown by co-evaporation and spray pyrolysis

3rd International Meeting for Researchers in Materials and Plasma Technology; 1st Symposium on Nanoscience and Nanotechnology

物理学;材料科学

Moreno, R.^1 ; Ramirez, E.A.^1 ; Gordillo Guzmán, G.^1

Universidad Nacional de Colombia, Bogotá, Colombia^1

关键词: Co-evaporations;    Crystalline phasis;    CZTS thin films;    Lattice strain;    Preparation method;    Structural defect;    Williamson-Hall;    Williamson-Hall plot;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/687/1/012041/pdf
DOI  :  10.1088/1742-6596/687/1/012041

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Results regarding optical and structural properties of Cu2ZnSnS4(CZTS) thin films prepared by co-evaporation using a novel procedure are compared with those obtained with CZTS films grown using a solution based route. The lattice strain Ε and crystallite size D of CZTS films prepared by co-evaporation and by spray pyrolysis were estimated through X-ray diffraction (XRD) measurements using Williamson-Hall-isotropic strain model. The results of estimated average crystallite size of CZTS films by Scherrer and Williamson-Hall plot methods were compared with AFM (atomic force microscopy) measurements. It was found that the average crystallite size measured by Williamson-Hall plot methods agree quite well with AFM results. Further, information regarding the influence of preparation method on both, crystalline phases and the formation of structural defects was achieved through Raman and Urbach energy measurements.