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MAPbI<sub>3-x</sub>Cl<sub><i>x</i></sub> Mixed Halide Perovskite for Hybrid Solar Cells: The Role of Chloride as Dopant on the Transport and Structural Properties

Silvia ColellaNNL—National Nanotechnology Laboratory, CNR Istituto Nanoscienze, Distretto Tecnologico, Via Arnesano 16, 73100 Lecce, ItalyEdoardo MosconiComputational Laboratory for Hybrid/Organic Photovoltaics (CLHYO), CNR-ISTM, Via Elce di Sotto 8, I-06123 Perugia, ItalyPaolo FedeliIMEM-CNR, Parco Area delle Scienze 37a, I-43124 Parma, ItalyAndrea ListortiCenter for Bio-Molecular Nanotechnology, Fondazione Istituto Italiano di Tecnologia, Via Barsanti, 73010 Arnesano (Lecce), ItalyFrancesco GazzaDepartment of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, ItalyFabio OrlandiDepartment of Chemistry GIAF, University of Parma, Via Usberti 17/A, 43124, Parma, ItalyPatrizia FerroIMEM-CNR, Parco Area delle Scienze 37a, I-43124 Parma, ItalyT. BesagniIMEM-CNR, Parco Area delle Scienze 37a, I-43124 Parma, ItalyAurora RizzoNNL—National Nanotechnology Laboratory, CNR Istituto Nanoscienze, Distretto Tecnologico, Via Arnesano 16, 73100 Lecce, ItalyG. CalestaniDepartment of Chemistry GIAF, University of Parma, Via Usberti 17/A, 43124, Parma, ItalyGiuseppe GigliCenter for Bio-Molecular Nanotechnology, Fondazione Istituto Italiano di Tecnologia, Via Barsanti, 73010 Arnesano (Lecce), ItalyFilippo De AngelisComputational Laboratory for Hybrid/Organic Photovoltaics (CLHYO), CNR-ISTM, Via Elce di Sotto 8, I-06123 Perugia, ItalyR. MoscaIMEM-CNR, Parco Area delle Scienze 37a, I-43124 Parma, Italy
2013en
ABI

Annotatsiya

Hybrid halide perovskites represent one of the most promising solutions toward the fabrication of all solid nanostructured solar cells, with improved efficiency and long-term stability. This article aims at investigating the structural properties of iodide/chloride mixed-halide perovskites and correlating them with their photovoltaic performances. We found out that, independent of the components ratio in the precursor solution, Cl incorporation in an iodide-based structure, is possible only at relatively low concentration levels (below 3–4%). However, even if the material band gap remains substantially unchanged, the Cl doping dramatically improves the charge transport within the perovskite layer, explaining the outstanding performances of meso-superstructured solar cells based on this material.

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DOI
10.1021/cm402919x

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