Title :
Role of Copper in the Performance of CdS/CdTe Solar Cells
Author :
Demtsu, S. ; Albin, D. ; Sites, J.
Author_Institution :
Dept. of Phys., Colorado State Univ., Fort Collins, CO
Abstract :
The performance of CdS/CdTe solar cells made with evaporated Cu as a primary back contact was studied through current-voltage (JV) at different intensities, quantum efficiency (QE) under light and voltage bias, capacitance-voltage (CV), and drive-level capacitance profiling (DLCP) measurements. The results show that while modest amounts of Cu enhance cell performance, excessive amounts degrade device quality and reduce performance. The analysis is supported with numerical simulations to reproduce and explain some of the experimental results
Keywords :
II-VI semiconductors; cadmium compounds; copper; solar cells; CdS-CdTe-Cu; bias voltage; capacitance-voltage measurements; current-voltage; drive-level capacitance profiling; numerical simulations; quantum efficiency; solar cells; Charge carrier density; Contacts; Copper; Degradation; Density measurement; Photovoltaic cells; Physics; Surface treatment; US Government; Voltage;
Conference_Titel :
Photovoltaic Energy Conversion, Conference Record of the 2006 IEEE 4th World Conference on
Conference_Location :
Waikoloa, HI
Print_ISBN :
1-4244-0017-1
Electronic_ISBN :
1-4244-0017-1
DOI :
10.1109/WCPEC.2006.279507
