Abstract Simulating biological synaptic functionalities through artificial devices opens up an innovative way to overcome the von Neumann bottleneck at device level. Artificial optoelectronic synapses provide a non‐contact method operate and shortcomings of electrical devices. With advantages high photoelectric conversion efficiency, adjustable light absorption coefficient, broad spectral range, nanowires (NWs)‐based have attracted wide attention. Herein, better promote applications...

Abstract Lead‐free 0D metal halide perovskites are emerging environmentally friendly materials exhibiting large exciton binding energy, which have recently attracted great attention for their excellent light emission properties and favorable stability. Herein, solvent evaporation crystallization at room temperature is adopted to fabricate Cs 3 Cu 2 I 5 perovskite millimeter‐sized crystals, show strong blue photoluminescence (PL) with quantum yield of up 89%, a Stockes shift long...

Lead halide perovskites have drawn extensive attention over recent decades owing to their outstanding photoelectric performances. However, toxicity and instability are big issues that need be solved for further commercialization. Herein, we adopt a facile dry ball milling method synthesize lead-free <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="m1"> <mml:mrow> <mml:msub> <mml:mi>Cs</mml:mi> </mml:mrow> <mml:mn>3</mml:mn> </mml:msub> <mml:mi>Cu</mml:mi>...

Abstract A top‐down method is demonstrated for the fabrication of CH 3 NH PbBr and PbI perovskite nanocrystals, employing a mixture ligands oleic acid oleylamine as coordinating solvents. This approach avoids use any polar solvents, skips multiple reaction steps by simple ultrasonic treatment precursors, yields rather monodisperse blue‐, green‐, red‐emitting methylammonium lead halide nanocrystals with high photoluminescence quantum yield (up to 72 % green‐emitting nanocrystals) remarkably...

A facile one-step method was developed to fabricate luminescent CH₃NH₃PbBr₃/NaNO₃ nanocomposites. Due the space localization and protection of tight inorganic salt matrix, nanocomposites show a longer PL lifetime enhanced thermal, light, solvent stability.

Abstract Low‐dimensional organic–inorganic metal halides (OIMHs) have emerged as promising light emitters due to their broadband emission originating from self‐trapped excitons (STE), especially for Cu‐based OIMHs. Herein, Cu(I)‐based OIMH with a structure of (TPP) 2 Cu 4 I 6 ·2DMSO (TPP stays tetraphenylphosphonium, and DMSO – dimethyl sulfoxide) has been synthesized, both in form single crystals microcrystalline powder. This compound exhibits green peak at 515 nm full width half‐maximum 78...

Composite polymer films incorporating luminescent copper nanoclusters are conveniently fabricated by solution processing of a precursor mixture polyvinylpyrrolidone, poly(vinyl alcohol), Cu2+ salt, and glutathione in water. The formation Cu takes place through chemical reactions the precursors hydrogel network, whose dehydration during subsequent aging process leads to aggregation-induced emission enhancement. Large-area (25 cm × 32 cm), flexible, transparent, thermally stable,...

Abstract A water‐soluble, positively charged polymer is obtained by copolymerizing chitosan with hypromellose, and the evaluation of its biocompatibility capacity for loading exogenous agents performed. Films based on hypromellose grafted (HGC) are employed as a matrix to fabricate composite films dehydration‐triggered aggregation copper nanoclusters (NCs). The resulting HGC/Cu NC transparent exhibit an aggregation‐induced emission enhancement NCs, photoluminescence quantum yield 42%....

We here report the integration of red emissive CuInS(2) based nanocrysals as a potential phosphor for warm light generation. By combining with commercial yellow YAG:Ce and green Eu(2+) doped silicate phosphors, we fabricated white light-emitting diodes high color rendering index up to ~92, luminous efficiency 45~60 lm/W temperature less than 4000K.

Stretchable, mechanically stable films with thermally dual emission peaked in the blue and orange spectral range are fabricated by condensation aging of carboxylated polyurethane presence on-purpose aggregated copper nanoclusters. The aggregation clusters leads to enhancement their orange, while matrix contributes band, an overall photoluminescence quantum yield as high 18%. Composite Cu nanoclusters/polyurethane sufficiently transparent over visible absorbing UV range; more than 90%...

Abstract Lead‐free vacancy‐ordered double perovskites with formula of A 2 M(IV)X 6 have become promising alternatives to lead halide perovskites. Herein, novel direct bandgap lead‐free Rb ZrCl 6− x Br (0 ≤ 2) highest photoluminescence quantum yield (PLQY) 90% are synthesized by using a facile wet grinding approach. Experimental and theoretical analyses demonstrate that the bright emissions originate from self‐trapped excitons (STEs). Additionally, thermally activated delayed fluorescence...

Abstract Organic–inorganic copper(I) halides (OICHs) have recently attracted great attentions for their unique optoelectronic properties. However, most of them poor stability and narrow excitation in UV region, which seriously hinder applications efficient white light‐emitting diodes (WLEDs). Herein, 0D (C 19 H 18 P) 2 Cu 4 I 6 with super broad‐band (300–500 nm) yellow emission the absolute photoluminescence quantum yield 87.4% is synthesized a quantity gram scale. Specifically, possesses...

The MAPbBr3 perovskite was synthesized, and X-ray diffraction proves that the is a single crystal. MAPbBr3/polymethyl methacrylate (PMMA) organic glasses were fabricated. crystal shows strong UV–visible absorption weak transmittance. Compared with crystal, MAPbBr3/PMMA show suitable transmittance enhanced stability. nonlinear optical measurement of performed. An obviously reverse saturable observed. coefficient as high 3.8 m/GW. This large competitive compared materials. Besides, stability...

The optical thermometric properties of LaMAl₁₁O₁₉:Mn²⁺/Mn⁴⁺(M = Mg, Zn) phosphors have potential temperature sensing applications.

Polarized emissive materials with anisotropic nanostructures have attracted tremendous attention as potential substitutes for polarizers. Herein, the electrospinning technique is adopted to realize in situ fabrication of lead-free halide Cs3Cu2I5 embedded poly(vinylidene fluoride) (PVDF) micro/nanofiber films polarized luminescence generation, a photoluminescence quantum yield (PLQY) 33.3–86.1%. The functionality polymer PVDF protector and its interactions were demonstrated. Cs3Cu2I5/PVDF...

Transparent films incorporated with quantum dots are promising light conversion materials for many cutting-edge technologies including light-emitting diodes and luminescent solar concentrators. In this work, we demonstrated that a combination of water soluble ultrathin cellulose nanofibers is an advantageous strategy to fabricate highly emissive thin tens micrometers. By varying the composition dots, these exhibit tunable photoluminescence emissions, ranging from blue red as well white...

Quantitative and selective oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) via electrocatalysis is a crucial milestone for biomass conversion. In this study, FeCo-modified β-Ni(OH)₂ wrinkled nanosheet electrodes were prepared...

Abstract Obtaining efficient perovskite solar modules (PSMs) with enhanced UV stability is essential for their practical applications, yet remains a significant challenge. In this work, highly organic–inorganic copper halide downshifting film that significantly enhances the of PSMs demonstrated by converting high‐energy harmful photons into beneficial visible light contribute to photovoltaic performance. The tetrapropylammonium (TPA) cation selected as main framework synthesize series...

Organic–inorganic hybrid copper(I)-based metal halides (OIHCMHs) have emerged as promising alternatives to lead perovskites due their exceptional optical properties. However, the lack of low-energy light-emitting compounds prohibits further applications. Herein, we report an orange–red emissive (C 19 H 18 P) 2 Cu 4 Br 6 with a zero-dimensional structure. The photoluminescence (PL) peak locates at 640 nm PL quantum yield 69.3%, and large Stokes shift is 245 nm. Experimental analyses...

Because of the fundamental properties and possible applications in spin-based electronics photonics, diluted magnetic semiconductor nanowires are actively pursued. Here we report a general facile solution synthetic strategy to prepare colloidal through solution-liquid–solid (SLS) doping approach using single-source precursors. On basis this strategy, transition metal ions such as Mn Eu doped CdS were successfully synthesized characterized. The material characterizations demonstrated that...