Wiley Online Library : Advanced Optical Materials
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Ligand Detachment—New Insight into the Mechanochromic Luminescence Mechanism of Copper Iodide Complexes with Thermally Activated Delayed Fluorescence

Yellowish–green emissive 1D-CuI(dmpz) is ground into orange–red emissive 2D-CuI(dmpz)0.5 with redshift of luminescence. The ligand detachment under external forces triggers the structure transformation from 1D chains to 2D network, resulting in decrease of band gap energy and contraction of Cu─Cu bonds, providing new insights into the mechanochromic...

Sat Apr 20, 2024 11:57
Topological States Decorated by Twig Boundary in Plasma Photonic Crystals

Rod-in-plasma system is developed to study phase transitions induced by magnetic fields and lattice scaling. The realization of topological edge states in negative permittivity background paves the way to solve the plasma communication blackout problem. Moreover, twig states originating from non-zero winding numbers in shrunken structure can couple...

Sat Apr 20, 2024 11:57
Visible TADF and NIR Quenching Emission of Chromium Activated Zirconium‐Halide Perovskite Toward Ultra‐High‐Sensitive Ratiometric Fluorescent Thermometer

The Cs2ZrCl6:Cr3+ microcrystals are synthesized via a room temperature co-precipitation method with a record-breaking photoluminescence quantum yield of 68.87%. The host Cs2ZrCl6 with thermal-activated delayed fluorescence property and the Cr3+ dopant with thermal quenching exhibit opposite temperature response, which can be ingeniously designed to...

Sat Apr 20, 2024 11:57
Efficient Near‐Infrared Fluorescence in Deuterated Host–Guest System for Near‐Infrared Organic Light‐Emitting Diodes

The significant impact of the deuteration of both host and guest molecules on NIR photoluminescence properties in the codeposited film is observed. The codeposited film exhibits PLQY of ≈15% with an emission peak wavelength at 900 nm, which is about three times higher than the film composed of un-deuterated molecules. Abstract Near-infrared...

Sat Apr 20, 2024 11:57
A Breakthrough in Color‐Tunable All‐Fluorescent White OLEDs through the Cooperation Between a New Blue HLCT Fluorophore and a Long‐Wavelength TADF Emitter

A high-performance single-cell all-fluorescent color-tunable white device with a single-doped single-emissive-layer structure is achieved by using a multi-functional deep-blue hybrid local and charge transfer fluorophore as an emitter as well as a universal host for the yellow thermally activated delayed fluorescence emitter, realizing a record-breaking...

Fri Apr 19, 2024 11:46
Homogeneous and Significant Near‐Field Enhancement in All‐Dielectric Metasurfaces for Sensing Applications

Silicon metasurface supports nonlocal bound state in the continuum featuring homogeneous and significant near field enhancement in the analyte region, leading to ultra-low limit of detection down to 20 pg mL–1 for breast cancer biomarker, which is more than an order of magnitude lower than the state of the art. Abstract All-dielectric metasurfaces...

Fri Apr 19, 2024 11:46

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