Lifetime and effective surface recombination velocity measurements in high-efficiency Si solar cells
Conference
·
OSTI ID:5912431
A conventional analysis method, based on minority carrier diffusion in a solar cell base, is used to obtain bulk lifetime (tau) and effective back-surface recombination velocity (S) from measurements of asymptotic decay times of short-circuit current and open circuit voltage. Since the decay times depend individually on both S and tau, it is necessary to use both current and voltage data for unique results. Experimental measurements of current and voltage transients are presented from variable base resistivity cells, ..gamma..-irradiated cells and cells with intentionally damaged back surface field regions. These cells exhibit lifetimes from one to several hundred ..mu..sec and recombination velocities from 100 to 5000 cm/sec. All features of the data are accounted for by the analysis.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5912431
- Report Number(s):
- SAND-81-2090C; CONF-811207-1; ON: DE81030361
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
CARRIER DENSITY
CARRIER LIFETIME
CURRENTS
DIRECT ENERGY CONVERTERS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
EQUIPMENT
GAMMA RADIATION
IONIZING RADIATIONS
LIFETIME
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIATIONS
RECOMBINATION
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT
TRANSIENTS
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
CARRIER DENSITY
CARRIER LIFETIME
CURRENTS
DIRECT ENERGY CONVERTERS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
EQUIPMENT
GAMMA RADIATION
IONIZING RADIATIONS
LIFETIME
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIATIONS
RECOMBINATION
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT
TRANSIENTS