Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction

Florent Sahli; Brett A. Kamino; Jérémie Werner; Matthias Bräuninger; Bertrand Paviet-Salomon; Loris Barraud; Raphaël Monnard; Johannes Peter Seif; Andrea Tomasi; Quentin Jeangros; Aïcha Hessler-Wyser; Stefaan De Wolf; Matthieu Despeisse; Sylvain Nicolay; Bjoern Niesen; Christophe Ballif

doi:10.1002/aenm.201701609

Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction

Florent Sahli^*, Brett A. Kamino, Jérémie Werner, Matthias Bräuninger, Bertrand Paviet-Salomon, Loris Barraud, Raphaël Monnard, Johannes Peter Seif, Andrea Tomasi, Quentin Jeangros, Aïcha Hessler-Wyser, Stefaan De Wolf, Matthieu Despeisse, Sylvain Nicolay, Bjoern Niesen, Christophe Ballif

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

149 Scopus citations

Abstract

Perovskite/silicon tandem solar cells are increasingly recognized as promising candidates for next-generation photovoltaics with performance beyond the single-junction limit at potentially low production costs. Current designs for monolithic tandems rely on transparent conductive oxides as an intermediate recombination layer, which lead to optical losses and reduced shunt resistance. An improved recombination junction based on nanocrystalline silicon layers to mitigate these losses is demonstrated. When employed in monolithic perovskite/silicon heterojunction tandem cells with a planar front side, this junction is found to increase the bottom cell photocurrent by more than 1 mA cm⁻². In combination with a cesium-based perovskite top cell, this leads to tandem cell power-conversion efficiencies of up to 22.7% obtained from J–V measurements and steady-state efficiencies of up to 22.0% during maximum power point tracking. Thanks to its low lateral conductivity, the nanocrystalline silicon recombination junction enables upscaling of monolithic perovskite/silicon heterojunction tandem cells, resulting in a 12.96 cm² monolithic tandem cell with a steady-state efficiency of 18%.

Original language	English (US)
Article number	1701609
Journal	Advanced Energy Materials
Volume	8
Issue number	6
DOIs	https://doi.org/10.1002/aenm.201701609
State	Published - Feb 26 2018
Externally published	Yes

Bibliographical note

Funding Information:
The authors acknowledge Fabien Debrot and Christophe Allebé for SHJ wet chemical processing and Vincent Paratte for Raman spectroscopy measurement. This work was funded by the Nano-Tera.ch “Synergy” project, the Swiss Federal Office of Energy under Grant SI/501072-01, and the Swiss National Science Foundation via the NRP70 “Energy Turnaround” project “PV2050.” Figure 1 was replaced on February 26, 2018 after initial online publication.

Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

microcrystalline
multijunction
organic–inorganic perovskite
silicon heterojunction
tunnel junction

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Materials Science(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/aenm.201701609

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Sahli, F., Kamino, B. A., Werner, J., Bräuninger, M., Paviet-Salomon, B., Barraud, L., Monnard, R., Seif, J. P., Tomasi, A., Jeangros, Q., Hessler-Wyser, A., De Wolf, S., Despeisse, M., Nicolay, S., Niesen, B., & Ballif, C. (2018). Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction. Advanced Energy Materials, 8(6), [1701609]. https://doi.org/10.1002/aenm.201701609

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title = "Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction",

abstract = "Perovskite/silicon tandem solar cells are increasingly recognized as promising candidates for next-generation photovoltaics with performance beyond the single-junction limit at potentially low production costs. Current designs for monolithic tandems rely on transparent conductive oxides as an intermediate recombination layer, which lead to optical losses and reduced shunt resistance. An improved recombination junction based on nanocrystalline silicon layers to mitigate these losses is demonstrated. When employed in monolithic perovskite/silicon heterojunction tandem cells with a planar front side, this junction is found to increase the bottom cell photocurrent by more than 1 mA cm−2. In combination with a cesium-based perovskite top cell, this leads to tandem cell power-conversion efficiencies of up to 22.7% obtained from J–V measurements and steady-state efficiencies of up to 22.0% during maximum power point tracking. Thanks to its low lateral conductivity, the nanocrystalline silicon recombination junction enables upscaling of monolithic perovskite/silicon heterojunction tandem cells, resulting in a 12.96 cm2 monolithic tandem cell with a steady-state efficiency of 18%.",

keywords = "microcrystalline, multijunction, organic–inorganic perovskite, silicon heterojunction, tunnel junction",

author = "Florent Sahli and Kamino, {Brett A.} and J{\'e}r{\'e}mie Werner and Matthias Br{\"a}uninger and Bertrand Paviet-Salomon and Loris Barraud and Rapha{\"e}l Monnard and Seif, {Johannes Peter} and Andrea Tomasi and Quentin Jeangros and A{\"i}cha Hessler-Wyser and {De Wolf}, Stefaan and Matthieu Despeisse and Sylvain Nicolay and Bjoern Niesen and Christophe Ballif",

note = "Funding Information: The authors acknowledge Fabien Debrot and Christophe Alleb{\'e} for SHJ wet chemical processing and Vincent Paratte for Raman spectroscopy measurement. This work was funded by the Nano-Tera.ch “Synergy” project, the Swiss Federal Office of Energy under Grant SI/501072-01, and the Swiss National Science Foundation via the NRP70 “Energy Turnaround” project “PV2050.” Figure 1 was replaced on February 26, 2018 after initial online publication. Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

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Sahli, F, Kamino, BA, Werner, J, Bräuninger, M, Paviet-Salomon, B, Barraud, L, Monnard, R, Seif, JP, Tomasi, A, Jeangros, Q, Hessler-Wyser, A, De Wolf, S, Despeisse, M, Nicolay, S, Niesen, B & Ballif, C 2018, 'Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction', Advanced Energy Materials, vol. 8, no. 6, 1701609. https://doi.org/10.1002/aenm.201701609

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AU - Sahli, Florent

AU - Kamino, Brett A.

AU - Werner, Jérémie

AU - Bräuninger, Matthias

AU - Paviet-Salomon, Bertrand

AU - Barraud, Loris

AU - Monnard, Raphaël

AU - Seif, Johannes Peter

AU - Tomasi, Andrea

AU - Jeangros, Quentin

AU - Hessler-Wyser, Aïcha

AU - De Wolf, Stefaan

AU - Despeisse, Matthieu

AU - Nicolay, Sylvain

AU - Niesen, Bjoern

AU - Ballif, Christophe

N1 - Funding Information: The authors acknowledge Fabien Debrot and Christophe Allebé for SHJ wet chemical processing and Vincent Paratte for Raman spectroscopy measurement. This work was funded by the Nano-Tera.ch “Synergy” project, the Swiss Federal Office of Energy under Grant SI/501072-01, and the Swiss National Science Foundation via the NRP70 “Energy Turnaround” project “PV2050.” Figure 1 was replaced on February 26, 2018 after initial online publication. Publisher Copyright: © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2018/2/26

Y1 - 2018/2/26

N2 - Perovskite/silicon tandem solar cells are increasingly recognized as promising candidates for next-generation photovoltaics with performance beyond the single-junction limit at potentially low production costs. Current designs for monolithic tandems rely on transparent conductive oxides as an intermediate recombination layer, which lead to optical losses and reduced shunt resistance. An improved recombination junction based on nanocrystalline silicon layers to mitigate these losses is demonstrated. When employed in monolithic perovskite/silicon heterojunction tandem cells with a planar front side, this junction is found to increase the bottom cell photocurrent by more than 1 mA cm−2. In combination with a cesium-based perovskite top cell, this leads to tandem cell power-conversion efficiencies of up to 22.7% obtained from J–V measurements and steady-state efficiencies of up to 22.0% during maximum power point tracking. Thanks to its low lateral conductivity, the nanocrystalline silicon recombination junction enables upscaling of monolithic perovskite/silicon heterojunction tandem cells, resulting in a 12.96 cm2 monolithic tandem cell with a steady-state efficiency of 18%.

AB - Perovskite/silicon tandem solar cells are increasingly recognized as promising candidates for next-generation photovoltaics with performance beyond the single-junction limit at potentially low production costs. Current designs for monolithic tandems rely on transparent conductive oxides as an intermediate recombination layer, which lead to optical losses and reduced shunt resistance. An improved recombination junction based on nanocrystalline silicon layers to mitigate these losses is demonstrated. When employed in monolithic perovskite/silicon heterojunction tandem cells with a planar front side, this junction is found to increase the bottom cell photocurrent by more than 1 mA cm−2. In combination with a cesium-based perovskite top cell, this leads to tandem cell power-conversion efficiencies of up to 22.7% obtained from J–V measurements and steady-state efficiencies of up to 22.0% during maximum power point tracking. Thanks to its low lateral conductivity, the nanocrystalline silicon recombination junction enables upscaling of monolithic perovskite/silicon heterojunction tandem cells, resulting in a 12.96 cm2 monolithic tandem cell with a steady-state efficiency of 18%.

KW - microcrystalline

KW - multijunction

KW - organic–inorganic perovskite

KW - silicon heterojunction

KW - tunnel junction

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DO - 10.1002/aenm.201701609

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JF - Advanced Energy Materials

SN - 1614-6832

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ER -

Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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