Monolithic Perovskite/Silicon Tandems with >28% Efficiency: Role of Silicon-Surface Texture on Perovskite Properties

Michele De Bastiani*, Rawan Jalmood, Jiang Liu, Christina Ossig, Aleš Vlk, Karol Vegso, Maxime Babics, Furkan H. Isikgor, Anand S. Selvin, Randi Azmi, Esma Ugur, Swarnendu Banerjee, Alessandro J. Mirabelli, Erkan Aydin, Thomas G. Allen, Atteq Ur Rehman, Emmanuel Van Kerschaver, Peter Siffalovic, Michael E. Stuckelberger, Martin LedinskyStefaan De Wolf*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Textured silicon wafers used in silicon solar cell manufacturing offer superior light trapping, which is a critical enabler for high-performance photovoltaics. A similar optical benefit can be obtained in monolithic perovskite/silicon tandem solar cells, enhancing the current output of the silicon bottom cell. Yet, such complex silicon surfaces may affect the structural and optoelectronic properties of the overlying perovskite films. Here, through extensive characterization based on optical and microstructural spectroscopy, it is found that the main effect of such substrate morphology lies in an altering of the photoluminescence response of the perovskite, which is associated with thickness variations of the perovskite, rather than lattice strain or compositional changes. With this understanding, the design of high-performance perovskite/silicon tandems is rationalized, yielding certified power conversion efficiencies of >28%.

Original languageEnglish (US)
Article number2205557
JournalAdvanced Functional Materials
Volume33
Issue number4
DOIs
StatePublished - Jan 20 2023

Bibliographical note

Funding Information:
M.D.B., R.J., and J.L. contributed equally to this work. The authors acknowledge the use of KAUST Solar Center and Core Lab facilities and the support from its staff. This work was supported by the King Abdullah University of Science and Technology (KAUST) under award nos. IED OSR‐2019‐4208, IED OSR‐2020‐4611, OSR‐CRG2019‐4093, OSR‐CRG2020‐4350, OSR‐CARF/CCF‐3079, and REI/1/4833‐01‐01. The authors also acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Parts of this research were carried out at PETRA III and the authors would like to thank Jan Garrevoet, Thomas Sheppard, Mikhail Lyubomirskiy, Martin Seyrich, Thea Engler, Ken Vidar Falch, and Gerald Falkenberg for assistance in using beamline P06, and Giovanni Fevola and Svenja Patjens for discussions. Beamtime was allocated for proposal II‐20190762. M.L. and A.V. acknowledge Czech Ministry of Education, Youth and Sports grant no. LUASK 22202 and the use of the CzechNanoLab research infrastructure (LM2018110). Furthermore, the authors acknowledge grants APVV‐20‐0111 and SK‐CZ‐RD‐21‐0043 of the Slovak Research and Development Agency.

Funding Information:
M.D.B., R.J., and J.L. contributed equally to this work. The authors acknowledge the use of KAUST Solar Center and Core Lab facilities and the support from its staff. This work was supported by the King Abdullah University of Science and Technology (KAUST) under award nos. IED OSR-2019-4208, IED OSR-2020-4611, OSR-CRG2019-4093, OSR-CRG2020-4350, OSR-CARF/CCF-3079, and REI/1/4833-01-01. The authors also acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Parts of this research were carried out at PETRA III and the authors would like to thank Jan Garrevoet, Thomas Sheppard, Mikhail Lyubomirskiy, Martin Seyrich, Thea Engler, Ken Vidar Falch, and Gerald Falkenberg for assistance in using beamline P06, and Giovanni Fevola and Svenja Patjens for discussions. Beamtime was allocated for proposal II-20190762. M.L. and A.V. acknowledge Czech Ministry of Education, Youth and Sports grant no. LUASK 22202 and the use of the CzechNanoLab research infrastructure (LM2018110). Furthermore, the authors acknowledge grants APVV-20-0111 and SK-CZ-RD-21-0043 of the Slovak Research and Development Agency.

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

Keywords

  • current matching
  • perovskite photovoltaics
  • perovskite/silicon tandem solar cells
  • silicon heterojunction solar cells
  • silicon texturing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Biomaterials
  • General Materials Science
  • Condensed Matter Physics
  • Electrochemistry

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