Structural, electronic and optical properties of a tetragonal-stannite Cu2CoGeS4 thin film synthesized by a low-cost spray method: Experimental and theoretical study

被引：8

作者：

Beraich, M. ^{[1
,4
,7
]}

Shaili, H. ^{[2
]}

Benhsina, E. ^{[3
]}

Hafidi, Z. ^{[4
]}

El Hat, A. ^{[2
]}

Taibi, M. ^{[4
]}

Bentiss, F. ^{[5
,6
]}

Guenbour, A. ^{[7
]}

Bellaouchou, A. ^{[7
]}

Mansouri, S. ^{[8
]}

Mzerd, A. ^{[2
]}

Zarrouk, A. ^{[7
]}

Fahoume, M. ^{[1
]}

机构：

[1] Ibn Tofail Univ, Dept Phys, Lab Phys Condensed Matter, Kenitra, Morocco

[2] Mohammed V Univ, Fac Sci, Grp Semicond & Environm Sensor Technol, Energy Res Ctr, BP 1014, Rabat, Morocco

[3] Mohammed V Univ Rabat, Fac Sci, CSM, LCAM, Ave Ibn Batouta,BP 1014, Rabat, Morocco

[4] Mohammed V Univ Rabat, Ecole Normale Super, CSM, LPCMIO, Rabat, Morocco

[5] Chouaib Doukkali Univ, Fac Sci, Lab Catalysis & Corros Mat, POB 20, M-24000 El Jadida, Morocco

[6] Univ Lille, INRA, ENSCL, UMR 8207,UMET,Unite Mat & Transformat,CNRS, F-59000 Lille, France

[7] Mohammed V Univ, Fac Sci, Lab Mat Nanotechnol & Environm, Av Ibn Battouta,POB 1014, Rabat, Morocco

[8] Univ Hassan II Casablanca, Fac Sci Ben Msik, LIMAT Thermostruct Mat & Polymers Team, Blvd Cdt Driss Harti,BP 7955, Casablanca, Morocco

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 14期

关键词：

Thin film; Cu2CoGeS4; Spray; Solar cells; Raman; Band gap; MN NANOFIBERS; FABRICATION; CRYSTALS; CU2GES3; FE; NI;

D O I：

10.1016/j.ceramint.2020.06.090

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This work presents the synthesis of a new quaternary compound Cu2CoGeS4 (CCGS) thin film for the first time combined with first-principles calculations (DFT, WIEN2k). The synthesis was done via spray ultrasonic of Cu-Co - Ge precursors onto glass substrate followed by high - temperature (500 degrees C) sulfurization under inert atmosphere (Ar). A near 2:1:1:4 stoichiometry of Cu2CoGeS4 was confirmed from EDX analysis. X- Ray- Diffraction(XRD) analysis confirmed the formation of polycrystalline Cu2CoGeS4 (CCGS) thin film with a tetragonal stannite structure(1 (4) over bar 2m). Raman spectroscopy confirmed the purity of the film and showed the presence of the characteristic predominant peak (339 cm(-1)) of the tetragonal stannite structure. The band structure displayed a direct band - gap. The experimental and theoretical optical band gaps were found to be about 1.75 eV with high absorption-coefficient in the visible region of the solar spectrum. Electrical measurement confirmed the p-type conductivity with a resistivity of 0.89(Omega.cm(-1)) and a carrier concentration of 4.6 10(16 )cm(-3). These results and the photoresponse measurement make the Cu2CoGeS4 (CCGS) a potential material for solar cell application and will draw the attention to develop this material in several other applications.

引用

页码：23127 / 23133

页数：7

共 24 条

[1] Effect of precursors pre-annealing on the microstructure of Cu2ZnSnS4 thin films on titanium foil substrate [J].