Synthesis of quaternary chalcogenide CZTS nanoparticles by a hydrothermal route

7th National Conference on Processing and Characterization of Materials

Das, S.^1 ; Sa, K.^1 ; Mahakul, P.C.^1 ; Raiguru, J.^1 ; Alam, I.^1 ; Subramanyam, Bvrs^1 ; Mahanandia, P.^1

Department of Physics and Astronomy, National Institute of Technology, Rourkela, Odisha

769008, India^1

关键词: Absorption co-efficient;    Crystalline nature;    Environment friendly;    Hydrothermal routes;    Inorganic metal salts;    Photovoltaic applications;    Photovoltaic devices;    Quaternary chalcogenides;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/338/1/012062/pdf
DOI  :  10.1088/1757-899X/338/1/012062

来源: IOP

【 摘 要 】

Cu2ZnSnS4(CZTS) has emerged as a potential absorber towards inorganic photovoltaic device application for its outstanding properties like non toxicity, earth abundancy nature, optimal band gap matched with solar spectrum (1.45- 1.65eV), high absorption coefficient (104cm-1). Here, a low cost, environment friendly facile hydrothermal route to synthesize phase pure CZTS nanoparticles using Cu (II), Zn (II), Sn (II) inorganic metal salts and thiourea as Sulphur source in distilled water solution as precursor is reported. The as synthesized samples characterized by X-Ray diffraction (XRD) and RAMAN confirmed structure and phase of CZTS nanocrystals. The morphology of the prepared CZTS have been characterized by scanning electron microscopy (SEM). The particle size is found in the range 4-5 nm with crystalline nature have been characterized by transmission electron microscope (TEM). The optical band gap of the as prepared samples is calculated to be 1.65eV from UV-Visible analysis which proves it can be used towards photovoltaic applications.