Title :
The fabrication and physics of cadmium-telluride thin-film solar cells
Author :
Potlog, T. ; Spalatu, N.
Author_Institution :
Phys. Dept., Moldova State Univ., Chisinau, Moldova
Abstract :
Conditions for efficiency improvement and optimization in CdS/CdTe solar cells prepared by hot wall technique (HWT) are discussed in this paper. CdS/CdTe solar cells with and without incorporated back layer contact (BC) have been studied by current-voltage and capacitance-voltage measurements. Analysis reveals the cells without back layer contact seriously suffer in fill factor (FF) due to J-V rollover in dark and illumination. Also, the FF is limited by a light-dependent shunt and series resistances. The efficiency of both types of cells is limited by a light-dependent shunt/series resistances and compensation mechanism of CdTe layer.
Keywords :
II-VI semiconductors; cadmium compounds; electric resistance; solar cells; vapour phase epitaxial growth; CdS-CdTe; capacitance-voltage measurement; current-voltage measurement; fill factor; hot wall technique; thin film solar cells; Capacitance measurement; Capacitance-voltage characteristics; Current measurement; Fabrication; Heterojunctions; Lighting; Photovoltaic cells; Physics; Temperature; Transistors;
Conference_Titel :
Semiconductor Conference, 2009. CAS 2009. International
Conference_Location :
Sinaia
Print_ISBN :
978-1-4244-4413-7
DOI :
10.1109/SMICND.2009.5336578
