Tailoring Mixed-Halide, Wide-Gap Perovskites via Multistep Conversion Process

Dowon Bae; Axel Palmstrom; Katherine Roelofs; Bastian Mei; Ib Chorkendorff; Stacey F. Bent; Peter C. K. Vesborg

doi:10.1021/acsami.6b01246

Tailoring Mixed-Halide, Wide-Gap Perovskites via Multistep Conversion Process

Dowon Bae, Axel Palmstrom, Katherine Roelofs, Bastian Mei, Ib Chorkendorff, Stacey F. Bent^*, Peter C. K. Vesborg

^*Corresponding author for this work

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

24 Citations (Scopus)

Abstract

Wide-band-gap mixed-halide CH₃NH₃PbI_3-XBr_X-based solar cells have been prepared by means of a sequential spin-coating process. The spin-rate for PbI₂ as well as its repetitive deposition are important in determining the cross-sectional shape and surface morphology of perovskite, and, consequently, J-V performance. A perovskite solar cell converted from PbI₂ with a dense bottom layer and porous top layer achieved higher device performance than those of analogue cells with a dense PbI₂ top layer. This work demonstrates a facile way to control PbI₂ film configuration and morphology simply by modification of spin-coating parameters without any additional chemical or thermal post-treatment.

Original language	English
Pages (from-to)	14301-14306
Number of pages	6
Journal	ACS Applied Materials and Interfaces
Volume	8
Issue number	23
Early online date	31 May 2016
DOIs	https://doi.org/10.1021/acsami.6b01246
Publication status	Published - 15 Jun 2016

Keywords

lead-halide
multistep deposition
organic-inorganic hybrids
photovoltaics
spin-coating

ASJC Scopus subject areas

General Materials Science

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10.1021/acsami.6b01246

Cite this

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abstract = "Wide-band-gap mixed-halide CH3NH3PbI3-XBrX-based solar cells have been prepared by means of a sequential spin-coating process. The spin-rate for PbI2 as well as its repetitive deposition are important in determining the cross-sectional shape and surface morphology of perovskite, and, consequently, J-V performance. A perovskite solar cell converted from PbI2 with a dense bottom layer and porous top layer achieved higher device performance than those of analogue cells with a dense PbI2 top layer. This work demonstrates a facile way to control PbI2 film configuration and morphology simply by modification of spin-coating parameters without any additional chemical or thermal post-treatment.",

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AU - Roelofs, Katherine

AU - Mei, Bastian

AU - Chorkendorff, Ib

AU - Bent, Stacey F.

AU - Vesborg, Peter C. K.

PY - 2016/6/15

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AB - Wide-band-gap mixed-halide CH3NH3PbI3-XBrX-based solar cells have been prepared by means of a sequential spin-coating process. The spin-rate for PbI2 as well as its repetitive deposition are important in determining the cross-sectional shape and surface morphology of perovskite, and, consequently, J-V performance. A perovskite solar cell converted from PbI2 with a dense bottom layer and porous top layer achieved higher device performance than those of analogue cells with a dense PbI2 top layer. This work demonstrates a facile way to control PbI2 film configuration and morphology simply by modification of spin-coating parameters without any additional chemical or thermal post-treatment.

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KW - multistep deposition

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KW - photovoltaics

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Tailoring Mixed-Halide, Wide-Gap Perovskites via Multistep Conversion Process

Abstract

Keywords

ASJC Scopus subject areas

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