Towards Perovskite Silicon Tandem Solar Cells with Optimized Optical Properties

Conference · Mon Nov 05 00:00:00 EST 2018

DOI:https://doi.org/10.1109/PVSC.2017.8366411· OSTI ID:1515376

Goldschmidt, Jan Christoph ^[1]; Bett, Alexander J. ^[1]; Schulze, Patricia S. C. ^[1]; Tucher, Nico ^[1]; Bivour, Martin ^[1]; Kohlstadt, Markus ^[1]; Lee, Seunghun ^[1]; Mastroianni, Simone ^[1]; Mundt, Laura ^[1]; Mundus, Markus ^[1]; Ndione, Paul F ^[2]; Wienands, Karl ^[3]; Winkler, Kristina ^[1]; Wurfel, Uli ^[1]; Hermle, Martin ^[1]; Glunz, Stefan W. ^[1]

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1. Fraunhofer Institute for Solar Energy Systems ISE
2. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
3. Albert-Ludwigs-University

Perovskite silicon tandem solar cells can overcome the efficiency limit of single junction solar cells. For an optimized optical performance, we propose a 2-terminal device featuring a front-side anti-reflection structure, optimized layer thicknesses, a meso-porous scaffold for the perovskite solar cell and a rear-side light-trapping structure for the silicon solar cell. To maintain the functionality of the underlying layers, we have developed a low-temperature process to realize a meso-porous TiO 2 scaffold via ultra-violet (UV) curing. With perovskite solar cell efficiencies >15%, we achieve results comparable to our conventional high-temperature (> 500 degrees C) route. For the optical optimization of the complex tandem device with elements of different feature sizes, we apply a matrix-based formalism and show how layer thickness optimization and the rear-side light trapping can significantly improve the current of the tandem device.

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1515376
• Report Number(s): NREL/CP-5900-73952
• Resource Relation: Conference: Presented at the 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC), 25-30 June 2017, Washington, D.C.
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
36 MATERIALS SCIENCE
photovoltaic cells
multi-junction
silicon
III-V semiconductor materials
silicon germanium