The role of a vapor-assisted solution process on tailoring the chemical composition and morphology of mixed-halide perovskite solar cells

S. Tafazoli; N. Timasi; E. Nouri; M. R. Mohammadi

doi:10.1039/c8ce00628h

The role of a vapor-assisted solution process on tailoring the chemical composition and morphology of mixed-halide perovskite solar cells

S. Tafazoli, N. Timasi, E. Nouri, M. R. Mohammadi (Lead / Corresponding author)

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

7 Citations (Scopus)

Abstract

Herein, we report a modified two-step method to construct a uniform and pinhole-free polycrystalline perovskite film with large grains up to the microscale using lead mixed-halide (PbI₂-PbCl₂) precursor solutions to guarantee the device functioning. Commonly used sequential deposition methods based on dip- and spin-coatings are combined with a vapor-assisted solution process to improve the perovskite morphology and tune the residual lead mixed-halides. These can enhance the optical absorption and efficiency of perovskite solar cell (PSC) devices. The impact of the Cl content in the lead mixed-halide precursors and the employed preparation methods on the photovoltaic performance of PSCs are studied. The highest performance of PSC is obtained for a vapor-treated film containing 2 mol% PbCl₂ deposited by spin-coating, showing a 56% increase in photoconversion efficiency compared to the pristine PbI₂-based device.

Original language	English
Pages (from-to)	4428-4435
Number of pages	8
Journal	CrystEngComm
Volume	20
Issue number	31
Early online date	5 Jul 2018
DOIs	https://doi.org/10.1039/c8ce00628h
Publication status	Published - 21 Aug 2018

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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

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10.1039/c8ce00628h

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abstract = "Herein, we report a modified two-step method to construct a uniform and pinhole-free polycrystalline perovskite film with large grains up to the microscale using lead mixed-halide (PbI2-PbCl2) precursor solutions to guarantee the device functioning. Commonly used sequential deposition methods based on dip- and spin-coatings are combined with a vapor-assisted solution process to improve the perovskite morphology and tune the residual lead mixed-halides. These can enhance the optical absorption and efficiency of perovskite solar cell (PSC) devices. The impact of the Cl content in the lead mixed-halide precursors and the employed preparation methods on the photovoltaic performance of PSCs are studied. The highest performance of PSC is obtained for a vapor-treated film containing 2 mol% PbCl2 deposited by spin-coating, showing a 56% increase in photoconversion efficiency compared to the pristine PbI2-based device.",

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AU - Tafazoli, S.

AU - Timasi, N.

AU - Nouri, E.

AU - Mohammadi, M. R.

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N2 - Herein, we report a modified two-step method to construct a uniform and pinhole-free polycrystalline perovskite film with large grains up to the microscale using lead mixed-halide (PbI2-PbCl2) precursor solutions to guarantee the device functioning. Commonly used sequential deposition methods based on dip- and spin-coatings are combined with a vapor-assisted solution process to improve the perovskite morphology and tune the residual lead mixed-halides. These can enhance the optical absorption and efficiency of perovskite solar cell (PSC) devices. The impact of the Cl content in the lead mixed-halide precursors and the employed preparation methods on the photovoltaic performance of PSCs are studied. The highest performance of PSC is obtained for a vapor-treated film containing 2 mol% PbCl2 deposited by spin-coating, showing a 56% increase in photoconversion efficiency compared to the pristine PbI2-based device.

AB - Herein, we report a modified two-step method to construct a uniform and pinhole-free polycrystalline perovskite film with large grains up to the microscale using lead mixed-halide (PbI2-PbCl2) precursor solutions to guarantee the device functioning. Commonly used sequential deposition methods based on dip- and spin-coatings are combined with a vapor-assisted solution process to improve the perovskite morphology and tune the residual lead mixed-halides. These can enhance the optical absorption and efficiency of perovskite solar cell (PSC) devices. The impact of the Cl content in the lead mixed-halide precursors and the employed preparation methods on the photovoltaic performance of PSCs are studied. The highest performance of PSC is obtained for a vapor-treated film containing 2 mol% PbCl2 deposited by spin-coating, showing a 56% increase in photoconversion efficiency compared to the pristine PbI2-based device.

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The role of a vapor-assisted solution process on tailoring the chemical composition and morphology of mixed-halide perovskite solar cells

Abstract

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UN SDGs

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