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Structure-Property Relations of Methylamine Vapor Treated Hybrid Perovskite CH3NH3PbI3 Films and Solar Cells.
Conings, Bert; Bretschneider, Simon A; Babayigit, Aslihan; Gauquelin, Nicolas; Cardinaletti, Ilaria; Manca, Jean; Verbeeck, Jo; Snaith, Henry J; Boyen, Hans-Gerd.
Afiliación
  • Conings B; Institute for Materials Research (IMO), Hasselt University , Wetenschapspark 1, 3590 Diepenbeek, Belgium.
  • Bretschneider SA; Department of Physics, Clarendon Laboratory, University of Oxford , Parks Road, Oxford OX1 3PU, U.K.
  • Babayigit A; Max Planck Institute for Polymer Research-Molecular Spectroscopy Group , Ackermannweg 10, 55128 Mainz, Germany.
  • Gauquelin N; Institute for Materials Research (IMO), Hasselt University , Wetenschapspark 1, 3590 Diepenbeek, Belgium.
  • Cardinaletti I; Department of Physics, Clarendon Laboratory, University of Oxford , Parks Road, Oxford OX1 3PU, U.K.
  • Manca J; Electron Microscopy for Materials Research, University of Antwerp , Groenenborgerlaan 171, 2020 Antwerp, Belgium.
  • Verbeeck J; Institute for Materials Research (IMO), Hasselt University , Wetenschapspark 1, 3590 Diepenbeek, Belgium.
  • Snaith HJ; X-Lab, Hasselt University , Agoralaan 1, Building D, 3590 Diepenbeek, Belgium.
  • Boyen HG; Electron Microscopy for Materials Research, University of Antwerp , Groenenborgerlaan 171, 2020 Antwerp, Belgium.
ACS Appl Mater Interfaces ; 9(9): 8092-8099, 2017 Mar 08.
Article en En | MEDLINE | ID: mdl-28186722
The power conversion efficiency of halide perovskite solar cells is heavily dependent on the perovskite layer being sufficiently smooth and pinhole-free. It has been shown that these features can be obtained even when starting out from rough and discontinuous perovskite film by briefly exposing the film to methylamine (MA) vapor. The exact underlying physical mechanisms of this phenomenon are, however, still unclear. By investigating smooth, MA treated films based on very rough and discontinuous reference films of methylammonium triiode (MAPbI3) and considering their morphology, crystalline features, local conductive properties, and charge carrier lifetime, we unraveled the relation between their characteristic physical qualities and their performance in corresponding solar cells. We discovered that the extensive improvement in photovoltaic performance upon MA treatment is a consequence of the induced morphological enhancement of the perovskite layer together with improved electron injection into TiO2, which in fact compensates for an otherwise compromised bulk electronic quality simultaneously caused by the MA treatment.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2017 Tipo del documento: Article País de afiliación: Bélgica Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2017 Tipo del documento: Article País de afiliación: Bélgica Pais de publicación: Estados Unidos