Complementary bulk and surface passivations for highly efficient perovskite solar cells by gas quenching

Shi Tang; Jueming Bing; Jianghui Zheng; Jianbo Tang; Yong Li; Mohannad Mayyas; Yongyoon Cho; Timothy W. Jones; Terry Chien-Jen Yang; Lin Yuan; Mike Tebyetekerwa; Hieu T. Nguyen; Michael P. Nielsen; N.J. Ekins-Daukes; Kourosh Kalantar-Zadeh; Gregory J. Wilson; David R. McKenzie; Shujuan Huang; Anita W.Y. Ho-Baillie

Cell Reports Physical Science (Aug 2021)

Complementary bulk and surface passivations for highly efficient perovskite solar cells by gas quenching

Shi Tang,
Jueming Bing,
Jianghui Zheng,
Jianbo Tang,
Yong Li,
Mohannad Mayyas,
Yongyoon Cho,
Timothy W. Jones,
Terry Chien-Jen Yang,
Lin Yuan,
Mike Tebyetekerwa,
Hieu T. Nguyen,
Michael P. Nielsen,
N.J. Ekins-Daukes,
Kourosh Kalantar-Zadeh,
Gregory J. Wilson,
David R. McKenzie,
Shujuan Huang,
Anita W.Y. Ho-Baillie

Affiliations

Shi Tang: School of Physics, The University of Sydney, Sydney, NSW 2006, Australia; The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia; Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia; CSIRO Energy, Newcastle Energy Centre, 10 Murray Dwyer Circuit, Mayfield West, NSW 2304, Australia
Jueming Bing: School of Physics, The University of Sydney, Sydney, NSW 2006, Australia; The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia; Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
Jianghui Zheng: School of Physics, The University of Sydney, Sydney, NSW 2006, Australia; The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia; Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
Jianbo Tang: School of Chemical Engineering, University of New South Wales (UNSW) Sydney Campus, Sydney, NSW, Australia
Yong Li: Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
Mohannad Mayyas: School of Chemical Engineering, University of New South Wales (UNSW) Sydney Campus, Sydney, NSW, Australia
Yongyoon Cho: Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
Timothy W. Jones: CSIRO Energy, Newcastle Energy Centre, 10 Murray Dwyer Circuit, Mayfield West, NSW 2304, Australia
Terry Chien-Jen Yang: CSIRO Energy, Newcastle Energy Centre, 10 Murray Dwyer Circuit, Mayfield West, NSW 2304, Australia
Lin Yuan: School of Engineering, Sustainable Energy Research Centre, Macquarie University, Sydney, NSW 2109, Australia
Mike Tebyetekerwa: Research School of Electrical, Energy, and Materials Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2601, Australia
Hieu T. Nguyen: Research School of Electrical, Energy, and Materials Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2601, Australia
Michael P. Nielsen: Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
N.J. Ekins-Daukes: Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
Kourosh Kalantar-Zadeh: School of Chemical Engineering, University of New South Wales (UNSW) Sydney Campus, Sydney, NSW, Australia
Gregory J. Wilson: CSIRO Energy, Newcastle Energy Centre, 10 Murray Dwyer Circuit, Mayfield West, NSW 2304, Australia
David R. McKenzie: School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
Shujuan Huang: Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia; School of Engineering, Sustainable Energy Research Centre, Macquarie University, Sydney, NSW 2109, Australia
Anita W.Y. Ho-Baillie: School of Physics, The University of Sydney, Sydney, NSW 2006, Australia; The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia; Australian Centre for Advanced Photovoltaics (ACAP), School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia; CSIRO Energy, Newcastle Energy Centre, 10 Murray Dwyer Circuit, Mayfield West, NSW 2304, Australia; Corresponding author

Journal volume & issue: Vol. 2, no. 8
p. 100511

Abstract

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Summary: The power conversion efficiency (PCE) of metal halide perovskite solar cells (PSCs) has improved dramatically from 3.8% to 25.5% in only a decade. Gas quenching is a desirable method for fabricating high-efficiency cells as it does not consume antisolvents and is compatible with large-area deposition methods such as doctor blading and slot-die coating. To further improve PCEs for gas-quenched PSCs, here, we develop complementary bulk and surface passivation strategies by incorporating potassium iodide (KI) in the perovskite precursor and applying n-hexylammonium bromide (HABr) to the perovskite surface. We show that (1) KI induces a spatial-compositional change, improving grain boundary properties; (2) KI and HABr reduce traps, especially at levels close to the mid-gap; and (3) HABr greatly improves the built-in potential of the device, thereby improving voltage output. The champion device achieves a steady-state PCE of 23.6% with a VOC of 1.23V, which is, to the best of our knowledge, the highest for PSC by gas quenching to date.

Published in Cell Reports Physical Science

ISSN: 2666-3864 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Science: Physics
Website: https://www.cell.com/cell-reports-physical-science

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