Impact of Infrared Optical Properties on Crystalline Si and Thin Film CdTe Solar Cells
- University of Toledo
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Photons with energies below the photovoltaic (PV) absorber band gap do not generate current and adversely impact performance when absorbed in other solar cell components to produce heat. Here we incorporate infrared (IR) optical response in simulations for understanding thermal losses. Spectroscopic ellipsometry is used to measure Al-Si interface optical properties in Si PV. Reflectance of an Si module has been analyzed to account for encapsulant and Al-Si interface contributions. IR extended quantum efficiency simulations calculate efficiency gains / losses arising from variations in current generated and total reflectance as functions of transparent front contact material in thin film CdTe PV.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1523601
- Report Number(s):
- NREL/CP-5K00-68660
- Country of Publication:
- United States
- Language:
- English
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