Hybrid halide perovskites have become the "next big thing" in emerging semiconductor materials, as past decade witnessed their successful application high-performance photovoltaics. This resurgence has encompassed enormous and widespread development of three-dimensional (3D) perovskites, spearheaded by CH3NH3PbI3. The next generation however, is characterized reduced dimensionality emphasizing two-dimensional (2D) perovskite derivatives which expand field into a more diverse subgroup...

The three-dimensional hybrid organic-inorganic perovskites have shown huge potential for use in solar cells and other optoelectronic devices. Although these materials are under intense investigation, derivative with lower dimensionality emerging, offering higher tunability of physical properties new capabilities. Here, we present two series two-dimensional (2D) that adopt the Dion-Jacobson (DJ) structure type, which first complete homologous reported halide perovskite chemistry. Lead iodide...

Hybrid inorganic-organic perovskites are developing rapidly as high performance semiconductors. Recently, two-dimensional (2D) were found to have white-light, broadband emission in the visible range that was attributed mainly role of self-trapped excitons (STEs). Here, we describe three new 2D lead bromide incorporating a series bifunctional ammonium dications templates which also emit white light: (1) α-(DMEN)PbBr4 (DMEN = 2-(dimethylamino)ethylamine), adopts unique corrugated layered...

Hybrid organic-inorganic halide perovskites are under intense investigations because of their astounding physical properties and promises for optoelectronics. Lead bromide chloride exhibit intrinsic white-light emission believed to arise from self-trapped excitons (STEs). Here, we report a series new structurally diverse hybrid lead that have broad-band at room temperature. They feature Pb/Br structures which vary 1D face-sharing 3D corner- edge-sharing structures. Through single-crystal...

Two-dimensional (2D) hybrid halide perovskites come as a family (B)2(A)n−1PbnX3n+1 (B and A= cations; X= halide). These are promising semiconductors for solar cells optoelectronic applications. Among the fascinating properties of these materials is white-light emission, which has been mostly observed in single-layered 2D lead bromide or chloride systems (n = 1), where broad emission comes from transient photoexcited states generated by self-trapped excitons (STEs) structural distortion. Here...

High-performance and good-stability hollow Sn-based perovskite solar cells using ethylenediammonium formamidinium cations.

Hybrid manganese halides have attracted widespread attention because of their highly emissive optical properties. To understand the underlying structural factors that dictate photoluminescence quantum yield (PLQY) these materials, we report five new hybrid bromides with general formula AmMnBr4 [m = 1 or 2, A dimethylammonium (DMA), 3-methylpiperidinium (3MP), 3-aminomethylpiperidinium (3AMP), heptamethylenimine (HEP), and trimethylphenylammonium (TMPEA)]. By studying crystal structures...

Tin-based perovskites have very comparable electronic properties to lead-based and are regarded as possible lower toxicity alternates for solar cell applications. However, the efficiency of tin-based perovskite cells is still low they exhibit poor air stability. Here, we report lead-free with greatly enhanced performance stability using so-called "hollow" ethylenediammonium methylammonium tin iodide ({en}MASnI3) absorbers. Our results show that en can improve film morphology most importantly...

The present study deals with the structural characterization and classification of novel compounds 1-8 into perovskite subclasses proceeds in extracting structure-band gap relationships between them. were obtained from employment small, 3-5-atom-wide organic ammonium ions seeking to discover new perovskite-like compounds. reported here adopt unique or rare structure types akin prototype perovskite. When trimethylammonium (TMA) was employed, we TMASnI3 (1), which is our reference compound for...

Abstract Hybrid halide 2D perovskites deserve special attention because they exhibit superior environmental stability compared with their 3D analogs. The closer interlayer distance discovered in Dion–Jacobson (DJ) type of relative to Ruddlesden–Popper (RP) implies better carrier charge transport and performance solar cells. Here, the structure properties DJ employing 3‐(aminomethyl)piperidinium (3AMP 2+ ) as spacing cation a mixture methylammonium (MA + formamidinium (FA cations perovskite...

Hybrid halide perovskites are emerging semiconducting materials, with a diverse set of remarkable optoelectronic properties. Besides the widely studied three-dimensional (3D) perovskites, two-dimensional (2D) show significant potential as photovoltaic (PV) active layers while exhibiting high moisture resistance. Here, we report two series new 2D perovskite solid solutions: (HA)Pb1–xSnxI4 and (BZA)2Pb1–xSnxI4 (x = 1, 0.75, 0.5, 0.25, 0), where HA stands for organic spacer histammonium BZA...

Hybrid halide double perovskites are a class of compounds attracting growing interest because their richness structure and property. Two-dimensional (2D) derivatives hybrid formed by the incorporation organic spacer cations into three-dimensional (3D) perovskites. Here, we report series seven new layered perovskite halides with propylammonium (PA), octylammonium (OCA), 1,4-butyldiammonium (BDA) cations. The general formulas AmMIMIIIX8 (single-layered Ruddlesden-Popper type m = 4 A PA or OCA,...

The emergent properties of chiral organic-inorganic hybrid materials offer opportunities in spin-dependent optoelectronic devices. One the most promising applications where spin, charge, and light are strongly coupled is circularly polarized (CPL) detection. However, performance state-of-the-art CPL detectors using metal halide semiconductors still limited by low anisotropy factor, poor conductivity, photoresponsivity. Here, we synthesize 0D copper chloride hybrids, templated...

Hybrid organic-inorganic antimony halides have attracted increasing attention due to the non-toxicity, stability, and high photoluminescence quantum yield (PLQY). To shed light on structural factors that contribute PLQY, five pairs of with general formula A2 SbCl5 Sb2 Cl8 are synthesized via two distinct methods characterized. The type adopts square pyramidal [SbCl5 ] geometry near-unity while seesaw dimmer [Sb2 PLQY≈0 %. Through combined data analysis literature, we found series generally...

The comprehensive study reported herein provides compelling evidence that anion templates are the main driving force in formation of two novel nanoscale lanthanide hydroxide clusters, {Gd38(ClO4)6} (1) and {Gd48Cl2(NO3)} (2), characterized by single-crystal X-ray crystallography, infrared spectroscopy, magnetic measurements. {Gd38(ClO4)6}, encapsulating six ClO4(-) ions, features a cage core composed twelve vertex-sharing {Gd4} tetrahedrons one Gd⋅⋅⋅Gd pillar. When Cl(-) NO3(-) were...

The advent of the two-dimensional (2D) family halide perovskites and their demonstration in 2D/three-dimensional (3D) hierarchical film structures broke new ground toward high device performance good stability. 2D Dion-Jacobson (DJ) phase are especially attractive solar cells because superior charge transport properties. Here, we report on DJ using a 3-(aminomethyl)piperidinium (3AMP) organic spacer for fabrication mixed Pb/Sn-based perovskites, exhibiting narrow bandgap 1.27 eV long carrier...

Two-dimensional Ruddlesden-Popper organic-inorganic hybrid layered perovskites (2D RPs) are solution-grown semiconductors with prospective applications in next-generation optoelectronics. The heat-carrying, low-energy acoustic phonons, which important for heat management of 2D RP-based devices, have remained unexplored. Here we report on the generation and propagation coherent longitudinal phonons along cross-plane direction RPs, following separate characterizations below-bandgap refractive...

Chiral hybrid metal halides with a high dissymmetry factor (glum ) and superior photoluminescence quantum yield (PLQY) are promising candidates for circularly polarized luminescence (CPL) light sources. Here, we report eight new chiral manganese halides, crystallizing in the non-centrosymmetric space group P21 21 showing intense CPL emissions. Oppositely-signed circular dichroism (CD) signals detected according to R- S-configurations of alkanolammonium cations. Time-resolved PL spectra show...

Ge-based hybrid perovskite materials have demonstrated great potential for second harmonic generation (SHG) due to the geometry and lone-pair induced non-centrosymmetric structures. Here, we report a new family of 3D bromide perovskites AGeBr3 , A=CH3 NH3 (MA), CH(NH2 )2 (FA), Cs FAGe0.5 Sn0.5 Br3 crystallizing in polar space groups. These compounds exhibit tunable SHG responses, where MAGeBr3 shows strongest intensity (5×potassium dihydrogen phosphate, KDP). Structural theoretical analysis...

ConspectusThere is an extensive history of research on both inorganic and hybrid metal halides, with the latter being first reported in 1960s. Although work systems has progressed steadily over last 60 years, it enjoyed a major renaissance during 5 years. This arisen as consequence 2009 discovery outstanding optoelectronic properties lead such (MA)PbI3 (MA = methylammonium), recognition that there are many opportunities for equally exciting discoveries compounds transition metals. Some early...

Copper(I) iodide hybrids are of interest for next-generation lighting technologies because their efficient luminescence in the absence rare-earth elements. Here, we report 10 structurally diverse hybrid copper(I) iodides that emit green–red region with quantum yields reaching 67%. The compounds display a diversity structures including ones one-dimensional (1D) Cu–1 chains, Cu2I2 rhomboid dimers, and two different arrangements Cu4I4 tetramers. dimers or cubane tetramers have higher...

Double perovskites (DP) have attracted extensive attention due to their rich structures and wide application prospects in the field of optoelectronics. Here, we report 15 new Bi-based double perovskite derived halides with general formula A2 BBiX6 (A=organic cationic ligand, B=K or Rb, X=Br I). These materials are synthesized using organic ligands coordinate metal ions a sp3 oxygen, diverse structure types been obtained distinct dimensionalities connectivity modes. The optical band gaps...