Effects of K ions doping on the structure, morphology and optical properties of Cu<sub>2</sub>FeSnS<sub>4</sub>thin films prepared by blade-coating process

WANG Shuo; MA Rui-xin; WANG Cheng-yan; LI Shi-na; WANG Hua

doi:doi:10.1007/s11801-017-7108-4

光电子快报（英文版）, 2017, 13 (4): 291, Published Online: Sep. 13, 2018

Effects of K ions doping on the structure, morphology and optical properties of Cu₂FeSnS₄thin films prepared by blade-coating process

论文大纲

WANG Shuo ^1,2MA Rui-xin ^1,3WANG Cheng-yan ^1,*LI Shi-na ¹WANG Hua ²

Author Affiliations

¹ School of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083,China

² Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China

³ Beijing Key Laboratory of Special Melting and Preparation of High-end Metal Materials, Beijing 100083, China

Abstract

Quaternary chalcogenide Cu₂FeSnS₄(CFTS) nanoparticles, as a kind of potential absorber layer material in thin film solar cells (TFSCs), were successfully synthesized by using a convenient solvothermal method. Alkali element K is incorporated into CFTS thin films in order to further improve the surface morphology and the optical properties of related films. X-ray diffraction (XRD), Raman spectroscopy and field emission scanning electron microscopy (FESEM) were used to characterize the phase purity, morphology and composition of CFTS particles and thin films. The results show that the particle elemental ratios of Cu/(Fe+Sn) and Fe/Sn are 1.2 and 0.9, respectively, which are close to the characteristics of stoichiometric CFTS. The band gaps of CFTS films before and after doping K ions are estimated to be 1.44 eV and 1.4 eV with an error of ±0.02 eV.

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WANG Shuo, MA Rui-xin, WANG Cheng-yan, LI Shi-na, WANG Hua. Effects of K ions doping on the structure, morphology and optical properties of Cu₂FeSnS₄thin films prepared by blade-coating process[J]. 光电子快报（英文版）, 2017, 13(4): 291.

Effects of K ions doping on the structure, morphology and optical properties of Cu₂FeSnS₄thin films prepared by blade-coating process

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