Towards High-Efficiency GaAsP/Si Tandem Cells
- University of Illinois at Urbana-Champaign
- Yale University
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Universidad Rey Juan Carlos
- Arizona State University
In this work, we present recent progress towards high-efficiency epitaxial 1.7 eV/1.1 eV GaAsP/Si tandem cells. First, we present Si bottom cells with thick, epitaxial n-GaAsP optical filtering layers, yielding an efficiency of 6.25%. Furthermore, we demonstrate GaAsP/Si 2-terminal tandem cells with Voc of 1.596 V using an unoptimized tunnel junction to interconnect the GaAsP and Si sub-cells. Finally, we discuss the design of SiNx/SiOx double-layer anti-reflectance coating (ARC) for GaAsP/Si tandem cells, which boosted the Jsc by 28.9%.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1515374
- Report Number(s):
- NREL/CP-5900-73950
- Country of Publication:
- United States
- Language:
- English
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