TY - JOUR

T1 - Hybrid Organic–Inorganic Halide Post-Perovskite 3-Cyanopyridinium Lead Tribromide for Optoelectronic Applications

AU - Selivanov, Nikita I.

AU - Samsonova, Anna Yu

AU - Kevorkyants, Ruslan

AU - Krauklis, Irina V.

AU - Chizhov, Yuri V.

AU - Stroganov, Boris V.

AU - Triantafyllou-Rundell, Marios E.

AU - Bahnemann, Detlef W.

AU - Stoumpos, Constantinos C.

AU - Emeline, Alexei V.

AU - Kapitonov, Yury V.

N1 - Funding Information: This study was supported by the Russian Foundation of Basic Research (Project No. 19‐03‐00836) and by Saint Petersburg State University via a research (Grant ID 73032813). Work at the University of Crete was supported in part by the project “NANO‐TANDEM” (MIS 5029191), co‐financed by Greece, and the European Regional Development Fund, and in part by SARF UoC under Grant No. KA 10652. This work was carried out on the equipment of SPbU Resource centers “Nanophotonics,” “X‐Ray Diffraction Studies,” “Computer Center,” “Physical Methods of Surface Investigation,” and “Geomodel.”

PY - 2021/9/9

Y1 - 2021/9/9

N2 - 2D halide perovskite-like semiconductors are attractive materials for various optoelectronic applications, from photovoltaics to lasing. To date, the most studied families of such low-dimensional halide perovskite-like compounds are Ruddlesden–Popper, Dion–Jacobson, and other phases that can be derived from 3D halide perovskites by slicing along different crystallographic directions, which leads to the spatially isotropic corner-sharing connectivity type of metal-halide octahedra in the 2D layer plane. In this work, a new family of hybrid organic–inorganic 2D lead halides is introduced, by reporting the first example of the hybrid organic–inorganic post-perovskite 3-cyanopyridinium lead tribromide (3cp)PbBr3. The post-perovskite structure has unique octahedra connectivity type in the layer plane: a typical “perovskite-like” corner-sharing connectivity pattern in one direction, and the rare edge-sharing connectivity pattern in the other. Such connectivity leads to significant anisotropy in the material properties within the inorganic layer plane. Moreover, the dense organic cation packing results in the formation of 1D fully organic bands in the electronic structure, offering the prospects of the involvement of the organic subsystem into material's optoelectronic properties. The (3cp)PbBr3 clearly shows the 2D quantum size effect with a bandgap around 3.2 eV and typical broadband self-trapped excitonic photoluminescence at temperatures below 200 K.

AB - 2D halide perovskite-like semiconductors are attractive materials for various optoelectronic applications, from photovoltaics to lasing. To date, the most studied families of such low-dimensional halide perovskite-like compounds are Ruddlesden–Popper, Dion–Jacobson, and other phases that can be derived from 3D halide perovskites by slicing along different crystallographic directions, which leads to the spatially isotropic corner-sharing connectivity type of metal-halide octahedra in the 2D layer plane. In this work, a new family of hybrid organic–inorganic 2D lead halides is introduced, by reporting the first example of the hybrid organic–inorganic post-perovskite 3-cyanopyridinium lead tribromide (3cp)PbBr3. The post-perovskite structure has unique octahedra connectivity type in the layer plane: a typical “perovskite-like” corner-sharing connectivity pattern in one direction, and the rare edge-sharing connectivity pattern in the other. Such connectivity leads to significant anisotropy in the material properties within the inorganic layer plane. Moreover, the dense organic cation packing results in the formation of 1D fully organic bands in the electronic structure, offering the prospects of the involvement of the organic subsystem into material's optoelectronic properties. The (3cp)PbBr3 clearly shows the 2D quantum size effect with a bandgap around 3.2 eV and typical broadband self-trapped excitonic photoluminescence at temperatures below 200 K.

KW - halide perovskites

KW - post-perovskites

KW - quantum wells

KW - semiconductors

KW - single crystals

UR - http://www.scopus.com/inward/record.url?scp=85109146955&partnerID=8YFLogxK

U2 - 10.1002/adfm.202102338

DO - 10.1002/adfm.202102338

M3 - Article

AN - SCOPUS:85109146955

VL - 31

JO - Advanced functional materials

JF - Advanced functional materials

SN - 1616-301X

IS - 37

M1 - 2102338

ER -