Die Kristallstruktur von [PhMe3 N]4 [Pb3Br10] / Crystal Structure of [PhMe3N]4[Pb3B r10]

Wiest, Th.; Blachnik, R.; Reuter, Hans

doi:10.1515/znb-1999-0901

Cited by 13 publications

(8 citation statements)

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“…A disordered structure can be stabilized by shorter diamines such as in (en)MAMI 3 (M = Sn, Pb) , and (PN/TN)FASnI 3 (PN = propylenediammonium; TN = trimethylenediammonium), while an ordered structure is seen with alkanolamines such as ethanolamine . The same tendencies toward the disruption of the inorganic lattice can be seen in the 2D materials. , For example, materials such as (PPA) 3 Pb 2 I 7 and (PBA) 3 Pb 2 I 7 (PPA + = C 6 H 5 (CH 2 ) 3 NH 3 + and PBA + = C 6 H 5 (CH 2 ) 4 NH 3 + ), whose alkyl chain length in these phenylalkylammonium cations varies, can also induce the formation of structures with mixed edge-, face-, and/or corner-sharing . These types of materials are stabilized using intermediate cations but are less explored.…”

Section: Introductionmentioning

confidence: 94%

From 2D to 1D Electronic Dimensionality in Halide Perovskites with Stepped and Flat Layers Using Propylammonium as a Spacer

et al. 2019

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Two-dimensional (2D) hybrid halide perovskites are promising in optoelectronic applications, particularly solar cells and light emitting devices (LEDs), and for their increased stability compared to 3D perovskites. Here, we report a new series of structures using propylammonium (PA +) which results in a series of Ruddlesden-Popper (RP) structures with the formula (PA) 2 (MA) n-1 Pb n I 3n+1 (n = 3, 4) and a new homologous series of "step-like" (SL) structures where the PbI 6 octahedra connect in a corner-and face-sharing motif with the general formula (PA) 2m+4 (MA) m-2 Pb 2m+1 I 7m+4 (m = 2, 3, 4). The RP structures show a blue-shift in bandgap for decreasing n (1.90 eV for n = 4 and 2.03 eV for n = 3) while the SL structures have an even greater blue-shift (2.53 eV for m = 4, 2.74 eV for m = 3, and 2.93 eV for m = 2). DFT calculations show that, while the RP structures are electronically 2D quantum wells, the SL structures are electronically 1D quantum wires with chains of corner-sharing octahedra "insulated" by blocks of face-sharing octahedra. Dark measurements for RP crystals show high resistivity perpendicular to the layers (10 11 Ω•cm) but a lower resistivity parallel to them (10 7 Ω•cm). The SL crystals have varying resistivity in all three directions, confirming both RP and SL crystals' utility as anisotropic electronic materials. The RP structures show strong photoresponse, whereas the SL materials exhibit resistivity trends that are dominated by ionic

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Section: Introductionmentioning

confidence: 94%

From 2D to 1D Electronic Dimensionality in Halide Perovskites with Stepped and Flat Layers Using Propylammonium as a Spacer

et al. 2019

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“…Very few examples of the last kind, also described in terms of face-sharing octahedra, involving bromide are known, for example, [ (Vanek et al, 1992). A search of the Cambridge Structural Database (Version 5.24, February 2003 release;Allen, 2002) for aminecontaining compounds yielded only one similar case involving bromide, [PhMe 3 N] 4 [Pb 3 Br 10 ] (Wiest et al, 1999), consisting of face-sharing trinuclear [Pb 3 Br 10 ] units connected by the sharing of a vertex.…”

Section: Commentmentioning

confidence: 99%

Bis[(S)-β-phenethylammonium] tribromoplumbate(II)

Billing

Lemmerer

2003

Acta Crystallogr E Struct Rep Online

144

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“…The inorganic layers contain trimers of face‐sharing octahedra [Pb 3 Br 10 ] 4− linked through bridging bromides to adjacent trimers. The inorganic sublattice resembling the Cs 4 Mg 3 F 10 structure [ 57 ] was reported before for other hybrid lead halides such as compounds containing phenyltrimethylammonium bromide (C 6 H 5 N(CH 3 ) 3 Br) [ 58 ] or trimethylsulfonium bromide ((CH 3 ) 3 SBr). [ 59 ] This results in a periodic layered structure in which the inorganic and organic phases are arranged alternately, similar to Ruddlesden–Popper phases.…”

Section: Resultsmentioning

confidence: 90%

Design of Active Defects in Semiconductors: 3D Electron Diffraction Revealed Novel Organometallic Lead Bromide Phases Containing Ferrocene as Redox Switches

Fillafer

Kuper

Schaate

et al. 2022

Adv Funct Materials

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Once the optical, electronic, or photocatalytic properties of a semiconductor are set by adjusting composition, crystal phase, and morphology, one cannot change them anymore, respectively, on demand. Materials enabling postsynthetic and reversible switching of features such as absorption coefficient, bandgap, or charge carrier dynamics are highly desired. Hybrid perovskites facilitate exceptional possibilities for progress in the field of smart semiconductors because active organic molecules become an integral constituent of the crystalline structure. This paper reports the integration of ferrocene ligands into semiconducting 2D phases based on lead bromide. The complex crystal structures of the resulting, novel ferrovskite (≃ ferrocene perovskite) phases are determined by 3D electron diffraction. The ferrocene ligands exhibit strong structure‐directing effects on the 2D hybrid phases, which is why the formation of exotic types of face‐ and edge‐sharing lead bromide octahedra is observed. The bandgap of the materials ranges from 3.06 up to 3.51 eV, depending on the connectivity of the octahedra. By deploying the redox features of ferrocene, one can create defect states or even a defect band leading to control over the direction of exciton migration and energy transport in the semiconductor, enabling fluorescence via indirect to direct gap transition.

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Die Kristallstruktur von [PhMe₃ N]₄ [Pb₃Br₁₀] / Crystal Structure of [PhMe₃N]₄[Pb₃B r₁₀]

Cited by 13 publications

References 1 publication

From 2D to 1D Electronic Dimensionality in Halide Perovskites with Stepped and Flat Layers Using Propylammonium as a Spacer

From 2D to 1D Electronic Dimensionality in Halide Perovskites with Stepped and Flat Layers Using Propylammonium as a Spacer

Bis[(S)-β-phenethylammonium] tribromoplumbate(II)

Design of Active Defects in Semiconductors: 3D Electron Diffraction Revealed Novel Organometallic Lead Bromide Phases Containing Ferrocene as Redox Switches

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