Triple-Halide Bandgap Tuning in Top Cells for Perovskite/Si Tandems

Jixian Xu; Caleb Boyd; Daniel Witter; Joseph M. Luther; Michael D. McGehee

doi:10.1109/PVSC40753.2019.8981171

Triple-Halide Bandgap Tuning in Top Cells for Perovskite/Si Tandems

Jixian Xu, Caleb Boyd, Daniel Witter, Joseph M. Luther, Michael D. McGehee

Materials, Chemical, and Computational Science

Research output: Contribution to conference › Paper › peer-review

1 Scopus Citations

Abstract

We found Br/I mixed perovskite with high fraction of Cs can steadily incorporate Cl-based perovskite to tune the bandgap. The resulting films exhibit significant improvement in the mobility and lifetime of photocarriers. In 1.67eV wide-bandgap perovskite top cells optimized for perovskite/Si tandems, we achieved a great reducing of voltage-of-open-circuit (VOC) deficit from 0.57eV to 0.45eV, which is among the best of perovskite top cells in Si tandems reported so far. The stabilized PCE is improved from 17-18% to 20%, featured with high VOC (1.22V) and high FF (83%). This advance in wide-bandgap top cells holds promise for improving perovskite/Si tandems.

Original language	American English
Pages	91-94
Number of pages	4
DOIs	https://doi.org/10.1109/PVSC40753.2019.8981171 https://doi.org/10.1109/PVSC40753.2019.8981171
State	Published - Jun 2019
Event	46th IEEE Photovoltaic Specialists Conference, PVSC 2019 - Chicago, United States Duration: 16 Jun 2019 → 21 Jun 2019

Conference

Conference	46th IEEE Photovoltaic Specialists Conference, PVSC 2019
Country/Territory	United States
City	Chicago
Period	16/06/19 → 21/06/19

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

NREL Publication Number

NREL/CP-5900-76352

Keywords

perovskite
silicon
solar cell
tandem

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Cite this

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title = "Triple-Halide Bandgap Tuning in Top Cells for Perovskite/Si Tandems",

abstract = "We found Br/I mixed perovskite with high fraction of Cs can steadily incorporate Cl-based perovskite to tune the bandgap. The resulting films exhibit significant improvement in the mobility and lifetime of photocarriers. In 1.67eV wide-bandgap perovskite top cells optimized for perovskite/Si tandems, we achieved a great reducing of voltage-of-open-circuit (VOC) deficit from 0.57eV to 0.45eV, which is among the best of perovskite top cells in Si tandems reported so far. The stabilized PCE is improved from 17-18% to 20%, featured with high VOC (1.22V) and high FF (83%). This advance in wide-bandgap top cells holds promise for improving perovskite/Si tandems.",

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author = "Jixian Xu and Caleb Boyd and Daniel Witter and Luther, {Joseph M.} and McGehee, {Michael D.}",

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doi = "10.1109/PVSC40753.2019.8981171",

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AU - Xu, Jixian

AU - Boyd, Caleb

AU - Witter, Daniel

AU - Luther, Joseph M.

AU - McGehee, Michael D.

PY - 2019/6

Y1 - 2019/6

N2 - We found Br/I mixed perovskite with high fraction of Cs can steadily incorporate Cl-based perovskite to tune the bandgap. The resulting films exhibit significant improvement in the mobility and lifetime of photocarriers. In 1.67eV wide-bandgap perovskite top cells optimized for perovskite/Si tandems, we achieved a great reducing of voltage-of-open-circuit (VOC) deficit from 0.57eV to 0.45eV, which is among the best of perovskite top cells in Si tandems reported so far. The stabilized PCE is improved from 17-18% to 20%, featured with high VOC (1.22V) and high FF (83%). This advance in wide-bandgap top cells holds promise for improving perovskite/Si tandems.

AB - We found Br/I mixed perovskite with high fraction of Cs can steadily incorporate Cl-based perovskite to tune the bandgap. The resulting films exhibit significant improvement in the mobility and lifetime of photocarriers. In 1.67eV wide-bandgap perovskite top cells optimized for perovskite/Si tandems, we achieved a great reducing of voltage-of-open-circuit (VOC) deficit from 0.57eV to 0.45eV, which is among the best of perovskite top cells in Si tandems reported so far. The stabilized PCE is improved from 17-18% to 20%, featured with high VOC (1.22V) and high FF (83%). This advance in wide-bandgap top cells holds promise for improving perovskite/Si tandems.

KW - perovskite

KW - silicon

KW - solar cell

KW - tandem

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DO - 10.1109/PVSC40753.2019.8981171

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T2 - 46th IEEE Photovoltaic Specialists Conference, PVSC 2019

Y2 - 16 June 2019 through 21 June 2019

ER -

Triple-Halide Bandgap Tuning in Top Cells for Perovskite/Si Tandems

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

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