Characterizing Recombination in CdTe Solar Cells with Time-Resolved Photoluminescence: Preprint
Time-resolved photoluminescence (TRPL) computer simulations demonstrate that under certain experimental conditions it is possible to assess recombination in CdTe solar cells in spite of the junction. This is supported by experimental findings that open-circuit voltage (Voc) is dependent on lifetime in a manner consistent with device theory. Measurements on inverted structures show that the CdCl2 treatment significantly reduces recombination in the CdTe layer without S diffusion. However, S diffusion is required for lifetimes comparable to those observed in high-efficiency solar cells. The results indicate that substrate solar cells can be fabricated with recombination lifetimes similar to superstrate cells.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC36-99GO10337
- OSTI ID:
- 891542
- Report Number(s):
- NREL/CP-520-39926
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
COMPUTERIZED SIMULATION
DIFFUSION
ENERGY CONVERSION
FABRICATE
HIGH EFFICIENCY
LIFETIME
OPEN-CIRCUIT VOLTAGE
ORGANIC COMPOUNDS
PHOTOLUMINESCENCE
PV
RECOMBINATION
SOLAR CELLS
SUBSTRATES
Solar Energy - Photovoltaics
TIME-RESOLVED PHOTOLUMINESCENCE (TRPL)
VOLATILE MATTER