A chiral one-dimensional organic–inorganic hybrid perovskite exhibits white-light emission with ultrahigh CRI.

Polarized light detection is attracting increasing attention for its wide applications ranging from optical switches to high-resolution photodetectors. Two-dimensional (2D) hybrid perovskite-type ferroelectrics combining inherent polarization dependence of bulk photovoltaic effect (BPVE) with excellent semiconducting performance present significant possibilities. Now, the BPVE-driven highly sensitive polarized in a 2D trilayered perovskite ferroelectric, (allyammonium)2 (ethylammonium)2 Pb3...

Circularly polarized light (CPL)-sensitive direct detection is attracting increasing attention owing to its various optical technology applications and ultracompact device structures. However, current CPL-sensitive mainly focuses on a single mode, whereas the visible-near-infrared (vis-NIR) dual-modal detection, which important for improving sensitivity night-vision performance, still remains be explored. Here, first time, vis-NIR presented in bulk crystals of two-dimensional chiral...

Chiral hybrid perovskites (CHPs), aggregating chirality and favorable semiconducting properties in one, have taken a prominent position direct circularly polarized light detection (CPL). However, passive high circular polarization sensitivity (gres) photodetection CHPs is still elusive challenging. Benefitting from efficient control turning of carrier transport by dimensional engineering, here, we unprecedentedly proposed chain-to-layer dimensionality engineering to realize high-gres...

A polar two-dimensional hybrid perovskite showing efficient white-light emission and a nonlinear optical effect suggests potential application in solid-state optics.

Halide perovskite heterocrystals, composed of distinct single crystals, have generated great interest for both fundamental research and applied device designs. One the key advantages using such a heterocrystal is its built-in electric potential, which enhances charge transport suppresses noise in solid-state devices. On basis this strategy, high-performance optoelectronic devices (e.g., X-ray detectors) been successfully demonstrated. However, toxicity metal cations (Pb) those reported...

High-Curie-temperature (Tc) ferroelectrics have exhibited broad applications in optoelectronic devices. Recently, two-dimensional multilayered perovskite with excellent photoelectric attributes are attracting increasing interest as new systems of photoferroelectrics. However, the effective tuning Tc value a photoferroelectric system still remains huge challenge. Here, by halogen substitution strategy to introduce bromine atoms on n-propylamine cations, hybrid...

Abstract Ferroelectric materials, particularly the emerging layered hybrid ferroelectrics, have shown great potential for high‐sensitive polarization photodetection owing to their striking bulk photovoltaic effect (BPVE). Despite recent achievements, linear photoresponse range based on single‐mode BPVE is still limited in shortwave region due large intrinsic bandgaps. Herein, first, realization of self‐powered visible–infrared by exploiting dual‐modal a newly developed Dion–Jacobson (D‐J)...

Due to the breakthrough development of layered hybrid perovskites, multilayered double perovskites have emerged as outstanding semiconducting materials owing their environmental friendliness and superior stability. Despite recent booming advances, realization above-room temperature ferroelectricity in this fascinating family remains a huge challenge. Herein, when molecular design strategy aromatic cation alloying is applied, an "green" bilayered perovskite photoferroelectric,...

Circularly polarized light (CPL) detection has sparked overwhelming research interest for its widespread chiroptoelectronic and spintronic applications. Ferroelectric materials, especially emerging layered hybrid perovskite ferroelectrics, exhibiting striking bulk photovoltaic effect (BPVE) present significant possibilities CPL by a distinctive working concept. Herein, the first time, we demonstrate realization of robust angular anisotropy in new ferroelectric crystal (CPA)2FAPb2Br7 (1, CPA...

Abstract Chiral hybrid perovskites are recently considered for circularly polarized light (CPL) detection owing to the integration of chiral activity and prominent photoelectric characteristics. However, limited because restricted cations; efficient self‐driven CPL without external power sources required halide perovskite photodetectors is desirable but remains scarce. Herein, two alternating cations in interlayer space chiral‐polar perovskites, ( R ‐β‐MPA)EAPbBr 4 S (MPA =...

Abstract Chiral alternating cations intercalation‐type (ACI) perovskites, which are capable of great structural flexibility and a suitable quantum well barrier thickness that facilitates better charge transport, urgently desired for circularly polarized light (CPL) detection. However, the chiral–polar photovoltaic effect (CPPE) in chiral ACI perovskites has never been reported although CPPE will provide opportunities future sustainable development. Here, by transmuting organic ligands 2D...

Abstract Organic–inorganic hybrid perovskites carry unique semiconducting properties and advanced flexible crystal structures. These characteristics of organic–inorganic create a promising candidacy for circularly polarized light (CPL) detection. However, CPL detections based on chiral are limited to UV visible wavelengths. The natural quantum well structures layered generate strong light–matter interactions. This makes it possible achieve near‐infrared (NIR) detection via two‐photon...

Flexible full-textile pressure sensor is able to integrate with clothing directly, which has drawn extensive attention from scholars recently. But the realization of flexible high sensitivity, wide detection range, and long working life remains challenge. Complex recognition tasks necessitate intricate arrays that require data processing are susceptible damage. The human skin capable interpreting tactile signals, such as sliding, by encoding changes performing complex perceptual tasks....

A family of 2D hybrid perovskites that emit intrinsic broadband emissions with tunable photoluminescence from “cold” to “warm” white light.

Halide double perovskites have emerged as remarkable semiconductors owing to their nontoxicity and superior optoelectronic features. Despite recent exciting progress, halide with bulk ferroelectricity are still sparse. Herein, we report the discovery of a multiaxial layered perovskite ferroelectric, BA2CsAgBiBr7 (1, BA = n-butylammonium), which exhibits fascinating ferroelectric feature Curie temperature ∼273 K unique semiconducting nature. Particularly, for 1, dimensional reduction reduced...

Organic-inorganic lead halide hybrids have attracted extensive interest in solid-state lighting, due to their superior color tunability and low-cost solution processing. However, the relatively low photoluminescence quantum efficiency (PLQE) is a common issue for most bulk hybrids. Inspired by intriguing luminescence properties of heterometallic complexes, we rationally developed an unprecedented two-dimensional (2D) Pb-Mn hybrid, (C5H14N2)2Pb4MnCl14 (2), through precisely tailored synthetic...

A new iodide layered double perovskite (C₃H₉NI)₄AgBiI₈ (IPAB) has been developed based on a short-chain spacer cation, which is the first homologous compound in perovskites that adopt Ruddlesden–Popper structure type.

Chiral hybrid perovskites have brought an unprecedented opportunity for circularly polarized light (CPL) detection. However, the circular polarization sensitivity of such a detector remains extremely low because high exciton recombination rate in those single-phase perovskites. Here, heterostructure construction strategy is proposed to reduce electron–hole chiral perovskite and achieve CPL detectors with greatly amplified sensitivity. A crystal, namely, [(R)-MPA]2MAPb2I7/MAPbI3 ((R)-MPA =...

Abstract Chiral hybrid organic–inorganic perovskites (HOIPs) have been well developed for circularly polarized light (CPL) detection, while new members that target at solar–blind ultraviolet (UV) region remain completely unexplored. Here, an effective design strategy to demonstrate circular polarization‐sensitive UV photodetection by growing wide‐bandgap chiral HOIP [( R )‐MPA] 2 PbCl 4 (( )‐MPA = methylphenethylammonium) single crystals onto silicon wafers, with well‐defined...

Benefiting from their structural flexibility and solution processability, organic–inorganic metal halide hybrids with efficient white-light emission present a great promise for solid-state lighting display applications. However, most of these reported high-performance single-component materials contain lead. Herein, we report "green" organic zinc halide, [(N-AEPz)ZnCl4]Cl (1; N-AEPz = N-aminoethylpiperazine), exhibiting prominent bluish-white-light photoluminescence quantum efficiency as...

Abstract Organic–inorganic hybrid perovskite heterostructures, particularly 2D/3D have enjoyed great success in optoelectronic field. However, the photodetection performance of those heterostructures is obscured by extensive disorder their polycrystalline films. Here, a delicate solution method demonstrated for creating sizable crystal vertical heterostructure featuring well‐defined interface and high single‐crystalline quality, namely (4‐AMP)(MA) 2 Pb 3 Br 10 /MAPbBr (MA, methylammonium;...

Tunable white-light emission, from “cold” white light to “warm” light, is facilely achieved using the one-dimensional perovskite (N-AEP)₂Pb₂Cl₁₀·H₂O.