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

Wide-band-gap mixed-halide CH3NH3PbI3–X Br 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...

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Published inACS applied materials & interfaces Vol. 8; no. 23; pp. 14301 - 14306
Main Authors Bae, Dowon, Palmstrom, Axel, Roelofs, Katherine, Mei, Bastian, Chorkendorff, Ib, Bent, Stacey F, Vesborg, Peter C.K
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 15.06.2016
American Chemical Society (ACS)
Subjects
lead-halide
MATERIALS SCIENCE
multistep deposition
organic−inorganic hybrids
photovoltaics
spin-coating
lead-halide
multistep deposition
organic−inorganic hybrids
photovoltaics
spin-coating
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Abstract Wide-band-gap mixed-halide CH3NH3PbI3–X Br 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.
AbstractList 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.
Here, 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. Our report 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.
Wide-band-gap mixed-halide CH3NH3PbI3–X Br 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.
Author Bae, Dowon
Vesborg, Peter C.K
Chorkendorff, Ib
Bent, Stacey F
Roelofs, Katherine
Mei, Bastian
Palmstrom, Axel
AuthorAffiliation Technical University of Denmark
Department of Chemical Engineering
Stanford University
Center for Individual Nanoparticle Functionality, Department of Physics
Department of Materials Science and Engineering
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Snippet Wide-band-gap mixed-halide CH3NH3PbI3–X Br X -based solar cells have been prepared by means of a sequential spin-coating process. The spin-rate for PbI2 as...
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...
Here, 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...
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SubjectTerms lead-halide
MATERIALS SCIENCE
multistep deposition
organic−inorganic hybrids
photovoltaics
spin-coating
Title Tailoring Mixed-Halide, Wide-Gap Perovskites via Multistep Conversion Process
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