Title :
The effect of secondary phases on Cu2ZnSn(S,Se)4 based solar cell
Author :
Yoo, Hyoungsuk ; Lechner, R. ; Jost, S. ; Palm, J. ; Verger, A. ; Lelarge, A. ; Moreau, V. ; Papret, C. ; Hock, R.
Author_Institution :
Crystallogr. & Struct. Phys, Univ. of Erlangen-Nurnberg, Erlangen, Germany
Abstract :
The highest efficient Cu2ZnSn(S,Se)4 (CZTSSe) Solar cell have a Cu-poor and Zn-rich metal ratio compared to the stoichiometry. Therefore secondary phases, such as Zn(S,Se), are formed. To investigate a possible correlation between these secondary phases and the solar cell properties, four samples were prepared which have efficiencies of 4.85-6.27%. In the semiconducting CZTSSe films, different amounts of Zn(S,Se) and SnSe2 are observed, and a correlation with solar cell properties is found. From the experimental results, conclusions about the influence of secondary phases on the cell efficiency are obtained.
Keywords :
copper compounds; solar cells; tin compounds; zinc compounds; Cu2ZnSn(S)4; Cu2ZnSn(Se)4; SnSe2; cell efficiency; efficiency 4.85 percent to 6.27 percent; secondary phases; semiconducting films; solar cell properties; Chemical elements; Correlation; Films; Photovoltaic cells; Reflection; Tin; X-ray scattering; CZTSSe; correlation; efficiency; kesterite; secondary phase; solar cell;
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th
Conference_Location :
Denver, CO
DOI :
10.1109/PVSC.2014.6925420
