Lead-free zero-dimensional (0D) organic-inorganic metal halide perovskites have recently attracted increasing attention for their excellent photoluminescence properties and chemical stability. Here, we report the synthesis characterization of an air-stable 0D mixed perovskite (C8 NH12 )4 Bi0.57 Sb0.43 Br7 ⋅H2 O, in which individual [BiBr6 ]3- [SbBr6 octahedral units are completely isolated surrounded by large organic cation C8 H12 N+ . Upon photoexcitation, bulk crystals exhibit...

Low-dimensional metal halides have recently attracted extensive attention owing to their unique structure and photoelectric properties. Herein, we report the colloidal synthesis of all-inorganic low-dimensional cesium copper halide nanocrystals (NCs) by adopting a hot-injection approach. Using same reactants ligands, but different reaction temperatures, both 1D CsCu2 I3 nanorods 0D Cs3 Cu2 I5 NCs can be prepared. Density functional theory indicates that reduced dimensionality in compared...

The electrocatalytic hydrogen evolution reaction (HER) is one of the most studied and promising processes for fuel generation. Single-atom catalysts have been shown to exhibit ultra-high HER catalytic activity, but harsh preparation conditions low single-atom loading hinder their practical applications. Furthermore, promoting kinetics, especially in alkaline electrolytes, remains as an important challenge. Herein, Pt/C60 with high-loading, high-dispersion single-atomic platinum anchored on...

Abstract Single‐component emitters with stable and bright warm white‐light emission are highly desirable for high‐efficacy white light‐emitting diodes (warm‐WLEDs), however, materials such luminescence properties extremely rare. Low­dimensional lead (Pb) halide perovskites can achieve photoluminescence (PL), yet they suffer from low stability PL quantum yield (PLQY). While Pb‐free air‐stable as Cs 2 AgInCl 6 emit light, sophisticated doping strategies typically required to increase their...

Double perovskites (DPs) are one of the most promising candidates for developing white light-emitting diodes (WLEDs) owing to their intrinsic broadband emission from self-trapped excitons (STEs). Translation three-dimensional (3D) DPs one-dimensional (1D) analogues, which could break octahedral tolerance factor limit, is so far remaining unexplored. Herein, by employing a fluorinated organic cation, we report series highly luminescent 1D DP-inspired materials, (DFPD)2 MI InBr6...

The achievement of significant photoluminescence (PL) in lanthanide ions (Ln3+ ) has primarily relied on host sensitization, where energy is transferred from the excited material to Ln3+ ions. However, this luminous mechanism involves only one optical antenna, namely material, which limits accessibility excitation wavelength-dependent (Ex-De) PL. Consequently, wider application light-emitting devices hindered. In study, we present an organic-inorganic compound, (DMA)4 LnCl7 (DMA+ =[CH3 NH2...

Luminescent supramolecular lanthanide edifices have many potential applications in biology, environments, and materials science. However, it is still a big challenge to improve the luminescent performance of multinuclear assemblies contrast their mononuclear counterparts. Herein, we demonstrate that combination intraligand charge transfer (ILCT) sensitization coordination-driven self-assembly gives birth bright EuIII tetrahedral cages with record emission quantum yield 23.1%. The ILCT...

The understanding of broad-band emission mechanisms on low-dimensional metal halides is an urgent need for the design principle these materials and their photoluminescence tuning. Herein, a new zero-dimensional (0D) organic–inorganic hybrid material (C9NH20)6Pb3Br12 has been discovered, in which face-sharing PbBr6 trimer clusters crystallize with organic cations (C9NH20+), forming periodic structure 0D blocks. Broad-band green peaking at about 522 nm was observed this material, full width...

Abstract For display applications, it is highly desirable to obtain tunable red/green/blue emission. However, lead‐free perovskite nanocrystals (NCs) generally exhibit broadband emission with poor color purity. Herein, we developed a unique phase transition strategy engineer the of cesium manganese bromides NCs and can achieve high purity in these NCs. Such be triggered by isopropanol: from one dimensional (1D) CsMnBr 3 (red‐color emission) zero (0D) Cs MnBr 5 (green‐color emission)....

Abstract Low‐dimensional metal halides have recently attracted extensive attention owing to their unique structure and photoelectric properties. Herein, we report the colloidal synthesis of all‐inorganic low‐dimensional cesium copper halide nanocrystals (NCs) by adopting a hot‐injection approach. Using same reactants ligands, but different reaction temperatures, both 1D CsCu 2 I 3 nanorods 0D Cs Cu 5 NCs can be prepared. Density functional theory indicates that reduced dimensionality in...

Abstract Halide double perovskites have been regarded as promising alternatives to famous lead halide in the field of luminescent materials. However, low‐emission efficiency pristine ones and lack efficient blue emitters remain considerable obstacles for their applications light‐emitting devices. Here, an air‐stable, all‐inorganic Sc‐based perovskite Cs 2 NaScCl 6 is reported, which exhibits strong emission peaking at 445 nm with averaged quantum yield 29.05% (the highest reported value...

Abstract As the increasing demand of lighting display technology, environmentally‐friendly, economic light‐emitting materials with high performance are required. Herein, a novel solution‐processed, highly emissive copper chloride compound β‐Cs 3 Cu 2 Cl 5 is reported. The crystal structure determined by Rietveld refinement powder X‐ray diffraction patterns shows that corner‐sharing tetrahedral Cu–Cl chains surrounded Cs + cations, yielding one‐dimensional at molecular level. all‐inorganic...

For inorganic semiconductor nanostructure, excitons in the triplet states are known as "dark exciton" with poor emitting properties, because of spin-forbidden transition. Herein, we report a design principle to boost photoluminescence (PL) all-inorganic lead-free double-perovskite nanocrystals (NCs). Our experimental data reveal that singlet self-trapped (STEs) experience fast intersystem crossing (80 ps) states. These STEs give bright green color emission unity PL quantum yield (PLQY)....

Halide double perovskites have aroused substantial research interest because of their unique optical properties and intriguing flexibility for various compositional adjustments. Herein, we report the synthesis photophysics rare-earth element yttrium (Y)-based perovskite single crystals (SCs) nanocrystals (NCs). The pristine Cs2NaYCl6 bulk SCs exhibit a weak sky-blue emission with low photoluminescence quantum yield (PLQY) 7.68% based on self-trapped exciton (STE), while no PL was observed...

Metal halide nanocrystals (NCs) with high photoluminescence quantum yield (PLQY) are desirable for lighting, display, and X-ray detection. Herein, the novel lanthanide-based NCs committed to designing optimizing optical scintillating properties, so as unravel PL origin, exciton dynamics, optoelectronic applications. Sb-doped zero-dimensional (0D) Cs

Abstract Low‐dimensional lead‐free metal halides have recently attracted a great deal of attention for their unique photoluminescence properties. In this work, new all‐inorganic zero‐dimensional (0D) rare‐earth perovskite, namely Cs 2 ScCl 5 ·H O is reported. The 0D crystal exhibits rare phenomenon excitation‐wavelength dependent emission from blue‐green to white yellow at room temperature. Spectroscopic characterizations indicate the tunable originated two distinct self‐trapped exciton...

Low-dimensional lead (Pb)-free perovskite derivatives have recently been regarded as promising candidates for various optoelectronic applications because of their merits easy preparation, nontoxicity, and broadband self-trapped exciton emission. However, similar to those Pb-based metal halide perovskites, most these materials undergo an irreversible structural damage upon exposure aqueous medium, which imposes restrictions on cyclic utilization in both academic industrial fields. Herein, we...

Abstract Recently, lanthanide‐doped halide perovskites have attracted increasing attention due to their unique optical properties, such as upconversion (UC) and near‐infrared (NIR) emission. However, these emitters suffer from low efficiency, limiting further practical applications. Herein, a Bi 3+ ‐alloyed double perovskite, Cs 2 NaEr 0.5 Cl 6 , with strong NIR‐triggered UC NIR‐II (1000–1700 nm) emission is reported. exhibits efficient green high quantum yield up 2.1% peaking at 1541 nm of...

Single-component emitters with broadband emission are attractive but challenging for illumination and display applications. The two-dimensional organic-inorganic hybrid perovskites have exhibited outstanding broad property due to low electronic dimensionality strong exciton-phonon coupling. However, few layered all-inorganic lead-free been explored, the explicit mechanism of exciton recombination in them also needs in-depth understanding. Herein, inorganic bismuth-based perovskite Cs 3 Bi 2...

Inorganic halide double perovskite (DP) nanocrystals (NCs) have attracted great attention because of their nontoxicity, mild reaction conditions, good stability, and excellent optical optoelectronic properties. Herein, we prepare the inorganic terbium DP Cs2BTbCl6 (B = Na or Ag) NCs with bright green photoluminescence (PL) emission. The Na–Tb-based exhibit better PL properties compared Ag–Tb-based NCs, which is due to Cs2NaTbCl6 having a more localized charge carrier distribution on...

Abstract Rare earth elements are widely employed and investigated as dopants in luminescent materials because of their ability to modulate hosts’ specific physical chemical properties. However, stable phosphors crystallized with pure rare few hence potential for wider utilization is largely limited. Herein, two examples cerium (Ce)‐based organic–inorganic hybrid halides, (DFPD) 4 CeX 7 (DFPD + = 4,4‐difluoropiperidinium; X − Cl Br ) (DFPD)CeCl ·2MeOH demonstrated. The compositions both...

Abstract Lead‐free metal halide double perovskites have emerged as promising scintillators owing to their superior optoelectronic properties, low‐cost and solution processability. However, it is still challenging develop high‐performance flexible X‐ray based on the B(I)‐site alkali modulation in lead‐free perovskite nanocrystals (NCs). Herein, a series of novel Cs 2 B(I)GdCl 6 (B: Li, Na, K) A B(I)M(III)X NCs structures are successfully synthesized, optical scintillator properties which...