Abstract
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 CdCl2treatment 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.
Original language | American English |
---|---|
Number of pages | 6 |
State | Published - 2006 |
Event | 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion (WCPEC-4) - Waikoloa, Hawaii Duration: 7 May 2006 → 12 May 2006 |
Conference
Conference | 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion (WCPEC-4) |
---|---|
City | Waikoloa, Hawaii |
Period | 7/05/06 → 12/05/06 |
NREL Publication Number
- NREL/CP-520-39926
Keywords
- diffusion
- fabricate
- high efficiency
- open-circuit voltages
- PV
- recombination
- solar cells
- time-resolved photoluminescence (TRPL)