Boosting the Efficiency of III-V/Si Tandem Solar Cells

Conference · Mon Nov 21 04:00:00 EST 2016

DOI:https://doi.org/10.1109/PVSC.2016.7749987· OSTI ID:1343478

Essig, Stephanie; Allebe, Christophe; Geisz, John F.; Steiner, Myles A.; Paviet-Salomon, Bertrand; Descoeudres, Antoine; Tamboli, Adele; Barraud, Loris; Ward, Scott; Badel, Nicolas; LaSalvia, Vincenzo; Levrat, Jacques; Despeisse, Matthieu; Ballif, Christophe; Stradins, Paul; Young, David L.

We have developed Si-based tandem solar cells with a certified 1-sun efficiency of 29.8% (AM1.5g). The four-terminal tandem devices consist of 1.8 eV rear-heterojunction GaInP top cells and silicon heterojunction bottom cells. The two subcells were fabricated independently in two different labs and merged using an optically transparent, electrically insulating epoxy. Work is ongoing to further improve the performance of each subcell and to push the tandem cell efficiency to > 30%.

• Research Organization: NREL (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: 1343478
• Report Number(s): NREL/CP-5J00-67933
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
III-V semiconductor materials
multi-junction solar cell
silicon solar cells