Efficient Near-Infrared-Transparent Perovskite Solar Cells Enabling Direct Comparison of 4-Terminal and Monolithic Perovskite/Silicon Tandem Cells

Journal Article · Sat Jul 30 00:00:00 EDT 2016 · ACS Energy Letters

DOI:https://doi.org/10.1021/acsenergylett.6b00254· OSTI ID:1334826

Werner, Jérémie ^[1]; Barraud, Loris ^[2]; Walter, Arnaud ^[2]; Bräuninger, Matthias ^[1]; Sahli, Florent ^[1]; Sacchetto, Davide ^[2]; Tétreault, Nicolas ^[2]; Paviet-Salomon, Bertrand ^[2]; Moon, Soo-Jin ^[2]; Allebé, Christophe ^[2]; Despeisse, Matthieu ^[2]; Nicolay, Sylvain ^[2]; De Wolf, Stefaan ^[1]; Niesen, Bjoern ^[3]; Ballif, Christophe ^[3]

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1. Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute of Microengineering (IMT), Photovoltaics and Thin-Film Electronics Laboratory, Rue de la Maladière 71b, 2002 Neuchâtel, Switzerland
2. CSEM, PV-Center, Jaquet-Droz 1, 2002 Neuchâtel, Switzerland
3. Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute of Microengineering (IMT), Photovoltaics and Thin-Film Electronics Laboratory, Rue de la Maladière 71b, 2002 Neuchâtel, Switzerland; CSEM, PV-Center, Jaquet-Droz 1, 2002 Neuchâtel, Switzerland

Combining market-proven silicon solar cell technology with an efficient wide band gap top cell into a tandem device is an attractive approach to reduce the cost of photovoltaic systems. For this, perovskite solar cells are promising high-efficiency top cell candidates, but their typical device size (<0.2 cm²), is still far from standard industrial sizes. Here, we present a 1 cm² near-infrared transparent perovskite solar cell with 14.5% steadystate efficiency, as compared to 16.4% on 0.25 cm². By mechanically stacking these cells with silicon heterojunction cells, we experimentally demonstrate a 4-terminal tandem measurement with a steady-state efficiency of 25.2%, with a 0.25 cm² top cell. The developed top cell processing methods enable the fabrication of a 20.5% efficient and 1.43 cm² large monolithic perovskite/silicon heterojunction tandem solar cell, featuring a rear-side textured bottom cell to increase its near-infrared spectral response. Finally, we compare both tandem configurations to identify efficiency-limiting factors and discuss the potential for further performance improvement.

• Research Organization: Arizona State Univ., Tempe, AZ (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; Swiss National Science Foundation (SNF); Swiss Federal Office of Energy (SFOE); Competence Center Energy and Mobility (CCEM); European Union (EU)
• Grant/Contract Number: EE0006335; SI/501072-01; CONNECT-PV; 653296
• OSTI ID: 1334826
• Alternate ID(s): OSTI ID: 1437656
• Journal Information: ACS Energy Letters, Journal Name: ACS Energy Letters Vol. 1 Journal Issue: 2; ISSN 2380-8195
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
36 MATERIALS SCIENCE