@article{Schutz2022Reduc-58424,
  year={2022},
  doi={10.1063/5.0093333},
  title={Reduced defect density in crystalline halide perovskite films via methylamine treatment for the application in photodetectors},
  volume={10},
  journal={APL Materials},
  author={Schütz, Emilia R. and Fakharuddin, Azhar and Yalcinkaya, Yenal and Ochoa-Martinez, Efrain and Bijani, Shanti and Mohd Yusoff, Abd. Rashid bin and Vasilopoulou, Maria and Seewald, Tobias and Steiner, Ullrich and Schmidt-Mende, Lukas},
  note={E.R.S., T.S., L.S.-M., Y.Y., and S.A.L.W. acknowledge the SPP2196 Project (Deutsche Forschungsgemeinschaft, DFG) for funding. Article Number: 081110}
}

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    <dc:contributor>Fakharuddin, Azhar</dc:contributor>
    <dc:creator>Steiner, Ullrich</dc:creator>
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    <dcterms:abstract xml:lang="eng">Considerable efforts have been devoted to optimizing and controlling the morphology and electronic properties of lead halide perovskites. The defect density of a perovskite layer strongly depends on the processing conditions. Consequently, the fabrication process of high-quality films is often complex, and reproducibility is a challenge. In this work, we present a methylamine gas-based method to recrystallize perovskite layers of any given quality in a controlled way, leading to millimeter-sized domains. Crystallinity significantly increases upon methylamine treatment, and crystal growth follows a preferred orientation. Photoluminescence- and space-charge limited current measurements show that the trap density halves after recrystallization. Conductive atomic force microscopy measurements show a higher surface conductivity and an improved spatial homogeneity after methylamine treatment. When applied in photodetectors, the improved film quality of the recrystallized films leads to increased detectivities of ≈4 × 10&lt;sup&gt;11&lt;/sup&gt; Jones compared to 3 × 10&lt;sup&gt;9&lt;/sup&gt; Jones of a reference device. The response time falls from 0.1 to 10&lt;sup&gt;−5&lt;/sup&gt; s upon methylamine treatment. Our work, thus, presents a promising route to fabricating reproducible, high-quality perovskite films through well-controllable recrystallization.</dcterms:abstract>
    <dc:contributor>Steiner, Ullrich</dc:contributor>
    <dc:contributor>Mohd Yusoff, Abd. Rashid bin</dc:contributor>
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    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2022-08-30T11:38:43Z</dc:date>
    <dc:creator>Seewald, Tobias</dc:creator>
    <dc:creator>Mohd Yusoff, Abd. Rashid bin</dc:creator>
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    <dc:creator>Yalcinkaya, Yenal</dc:creator>
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    <dcterms:title>Reduced defect density in crystalline halide perovskite films via methylamine treatment for the application in photodetectors</dcterms:title>
    <dc:creator>Bijani, Shanti</dc:creator>
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    <dc:contributor>Schütz, Emilia R.</dc:contributor>
    <dc:contributor>Vasilopoulou, Maria</dc:contributor>
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    <dc:contributor>Bijani, Shanti</dc:contributor>
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