Title :
Direct current-voltage measurements of the Mo/CuInSe2 contact on operating solar cells
Author :
Shafarman, W.N. ; Phillips, J.E.
Author_Institution :
Inst. of Energy Conversion, Delaware Univ., Newark, DE, USA
Abstract :
Many high efficiency CuInSe2 based solar cells show blocking or nonohmic contact behavior in their current-voltage characteristic which has often been attributed to the Mo/CuInSe2 back contact. A novel device configuration is presented which allows the current-voltage characteristic of the Mo/CuInSe2 junction to be analyzed separately from the rest of the operating solar cell. Direct measurements of the back contact on operating CuInSe2 based solar cells which demonstrate this blocking behavior show that the Mo/CuInSe2 contact is ohmic with negligible contact resistance compared to the total series resistance of the device
Keywords :
contact resistance; copper compounds; electric current measurement; indium compounds; molybdenum; ohmic contacts; solar cells; ternary semiconductors; voltage measurement; Mo-CuInSe2; Mo/CuInSe2 contact; back contact; blocking behaviour; direct current-voltage measurements; high efficiency; negligible contact resistance; nonohmic contact behavior; ohmic contact; operating solar cells; total series resistance; Contact resistance; Current measurement; Diodes; Energy conversion; Equivalent circuits; Photovoltaic cells; Sputtering; Temperature; Voltage; Zinc oxide;
Conference_Titel :
Photovoltaic Specialists Conference, 1996., Conference Record of the Twenty Fifth IEEE
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-3166-4
DOI :
10.1109/PVSC.1996.564278
