Wiley Online Library : Advanced Optical Materials
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Mini Light‐Emitting Diode Technology with High Quantum Efficient NIR‐II Partially Inverse Spinel MgGa2O4:Cr3+,Ni2+ Nanophosphors

The MSN template is integrated with the MgGa2O4 system with Cr3+ and Ni2+ (MGOCN@MSN). The high energy transfer efficiency of 95% from Cr3+ to Ni2+ helped in providing a steady and increased NIR-II signal at 1270 nm with a quantum yield of 79.2%. The NIR-II nanophosphor MGOCN@MSN is placed on the mini-LED chip (shown in green). This is followed by...

Thu Mar 28, 2024 11:48
High‐Performance Narrowband Light‐Emitting Electrochemical Cells Enabled by Intrinsically Ionic Multi‐Resonance Thermally Activated Delayed Fluorescence Emitters

Narrowband light-emitting electrochemical cells (LECs) are fabricated with ionic multi-resonance thermally- activated delayed fluorescence (TADF) guest emitters, which show high external quantum efficiencies (EQEs) up to 13.0% under constant-voltage driving and peak brightness/EQE/half-lifetime at 780 cd m−2/5.6%/62.2 h under constant-current driving....

Thu Mar 28, 2024 11:48
3D Measurements and Characterizations of Refractive Index Distributions of Volume Holographic Gratings Using Low‐Coherence Holotomography

Holotomography is utilized for the measurement of 3D refractive index tomograms of volume holographic gratings. This method offers precise quantification of refractive index distributions and the detection of defects within these gratings. It enables the evaluation of voids, debris, and the grating formation. This study underscores the potential of...

Thu Mar 28, 2024 11:48
Achieving Efficient Optical Thermometry in Terbium‐Doped Highly Transparent Ceramics

As an illustrative example, remarkably enhances photoluminescence and elevated transparency in Y2Zr2O7:Tb (YZO:Tb) ceramics are obtained via air annealing plus vacuum re-annealing treatment. Varies in the defect concentrations within these YZO:Tb ceramics are proposed for the relevant mechanisms. Moreover, an efficient temperature feedback window...

Thu Mar 28, 2024 11:48
Rational Molecular Design via Cyanobenzene Integration for Constructing Efficient Yellow‐Orange Thermally Activated Delayed Fluorescence Emitters

A new molecular design of cyanobenzene-decorated quinoxaline acceptor, combining two or four cyanobenzene acceptors and a rigid carbazole donor, is successfully utilized to construct long-wavelength TADF emitters. The two additional cyanobenzene units at the 5- and 8-positions of the quinoxaline acceptor are presumed to interlock the molecular rotations...

Thu Mar 28, 2024 11:48
Dual Mode Optoelectronic Devices Based on 2D Single Crystalline VO2 Films with Controlled Metallic Domain Regime Induced Variable Hysteresis

A novel dual-mode optoelectronic device with both memory and switching functionalities is developed by utilizing alternating metallic stripe domain regime-induced controllable hysteresis of two dimensional crystalline VO2 films. It is found that the formation and disappearance of tensile strain-induced metallic stripe domain arrays allow tunable hysteresis...

Thu Mar 28, 2024 11:48

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