Zero-Dimensional Halides with ns Electron (Sb) Activation to Generate Broad Photoluminescence.

Organic-inorganic metal halides (OIMHs) have various crystal structures and offer excellent semiconducting properties. Here, we report three novel OIMHs, (PPA)InBr (PPA = [CH(CH)NH]), (PBA)SbBr, and (PBA)SbI (PBA = [CH(CH)NH]), showing typical zero-dimensional (0D) structure, octahedra dimers, and corner-sharing one-dimensional chains and crystallized in the monoclinic system with 2, 2/, and 2/ space groups, respectively. (PPA)InBr, (PBA)SbBr, and (PBA)SbI have experimental optical band gaps of ∼3.

Luminescent hybrid halides with various centering metal cations (Zn, Cd and Pb) and diverse structures.

Organic-inorganic hybrid metal halides have been extensively studied because of their great potential in optoelectronics. Herein, we report three hybrid metal halides (Bmpip)ZnBr, (Bmpip)CdBr, and (Bmpip)PbBr (where Bmpip is 1-butyl-1-methyl-piperidinium, CHN). (Bmpip)ZnBr and (Bmpip)CdBr crystallize in the 2/ space group with zero-dimensional crystal structures with [Br] ( = Zn, Cd) tetrahedra isolated by Bmpip.

Synthetic-Method-Dependent Antimony Bromides and Their Photoluminescent Properties.

Recently, excellent optical properties of low-dimensional organic-inorganic metal halides, stemming from their tunable structure and optoelectronic properties, have been demonstrated. The synthetic method is critical because it is highly related to the structure and properties of the halide. Herein, we obtain two different antimony bromides, (Bmpip)SbBr and (Bmpip)SbBr, which both possess the 2/ space group having different crystal structures, and this confirms the important influence of synthesis on the single-crystal structure.

Small Organic Molecular-Based Hybrid Halides with High Photoluminescence Quenching Temperature.

Organic-inorganic metal halides (OIMHs) exhibit excellent photoelectric properties; however, their high-temperature light-emission stability requires further improvement. Here, we report three isostructural OIMHs (CHN)InCl, (CHN)SbCl, and (CHN)SbBr (CHN = dimethylammonium). They are all crystallized in the 222 space group with a zero-dimensional (0D) structure, with orange-red photoluminescence (PL) under 365 nm UV excitation.

Decreasing Structural Dimensionality of Double Perovskites for Phase Stabilization toward Efficient X-ray Detection.

Halide double perovskites have attracted substantial attention for optoelectronic applications owing to their low toxicity and high stability. However, double perovskites have strict requirements in terms of the halide type, thus rendering many of their properties unchangeable, including the band gap, atomic number, and carrier transport. By introducing long-chain organic amines, the chloride site of double perovskites can be completely replaced by bromide.

Light-Emitting 0D Hybrid Metal Halide (CHN)SbCl with Antimony Dimers.

Low-dimensional organic-inorganic metal halides (OIMHs), as emerging light-emitting materials, have aroused widespread attention owing to their unique structural tunability and photoelectric characteristics. OIMHs are also promising materials for optoelectronic equipment, light-emitting diodes, and photodetectors. In this study, (CHN)SbCl (CHN is an -methylethylenediamine cation), a new zero-dimensional OIMH, has been reported, and (CHN)SbCl possesses a 2/ space group.

Efficiency-Tunable Single-Component White-Light Emission Realized in Hybrid Halides Through Metal Co-Occupation.

Organic-inorganic hybrid metal halides have attracted widespread attention as emerging optoelectronic materials, especially in solid-state lighting, where they can be used as single-component white-light phosphors for white light-emitting diodes. Herein, we have successfully synthesized a zero-dimensional (0D) organic-inorganic hybrid mixed-metal halide (Bmpip)PbSnBr (0 < < 1, Bmpip = 1-butyl-1-methyl-piperidinium, CHN) that crystallizes in a monoclinic system in the 2/ space group. Pb and Sn form a four-coordinate seesaw structure separated by organic cations forming a 0D structure.