Results 31 to 40 of about 2,020 (185)

Interpretable Machine Learning for Bandgap Prediction and Descriptor‐Guided Design Rules of Phosphates

open access: yesAdvanced Intelligent Discovery, EarlyView.
An explainable CatBoost model was trained to predict the bandgaps of 474 phosphate crystals based on composition and density descriptors. SHAP analysis identified two key variables—d‐electron‐count dispersion and atomic‐density dispersion—as the primary drivers of the model's predictions.
Wenhu Wang   +3 more
wiley   +1 more source

Enhanced Performance of AlGaN-Based Deep Ultraviolet Light-Emitting Diodes with Chirped Superlattice Electron Deceleration Layer

open access: yesNanoscale Research Letters, 2019
AlGaN-based deep ultraviolet (DUV) light-emitting diodes (LEDs) suffer from electron overflow and insufficient hole injection. In this paper, novel DUV LED structures with superlattice electron deceleration layer (SEDL) is proposed to decelerate the ...
Jiahui Hu   +9 more
doaj   +1 more source

Extremely Ultranarrow Linewidth Based on Low-Symmetry Al Nanoellipse Metasurface

open access: yesNanomaterials, 2022
Plasmonic nanostructures with ultranarrow linewidths are of great significance in numerous applications, such as optical sensing, surface-enhanced Raman scattering (SERS), and imaging.
Liangyu Wang   +3 more
doaj   +1 more source

Organic photonic synaptic transistors for bionic vision: From spectral engineering to flexible intelligent perception

open access: yesFlexMat, EarlyView.
Different wavelength photonic synapses are used for biomimetic visual applications. Abstract Bionic intelligent visual perception systems have significant application prospects in fields such as autonomous driving and robotics, medical imaging and auxiliary diagnosis, security and monitoring.
Longlong Jiang   +6 more
wiley   +1 more source

Deep-ultraviolet electroluminescence and photocurrent generation in graphene/hBN/graphene heterostructures

open access: yesNature Communications, 2021
Here, the authors report the observation of deep-ultraviolet (DUV) electroluminescence and photocurrent generation in van der Waals heterostructures based on hBN crystals, showing potential for DUV light emitting and detection devices.
Su-Beom Song   +12 more
doaj   +1 more source

Recent progress and challenges in top‐emitting quantum dot light‐emitting diodes

open access: yesFlexMat, EarlyView.
This review summarizes recent advances in top‐emitting quantum‐dot light‐emitting diodes (TE‐QLEDs), including device architectures, microcavity engineering, angular‐emission management, and operational stability, highlighting optical–electrical–thermal co‐optimization as the key pathway toward reliable, high‐performance TE‐QLEDs. Abstract Top‐emitting
Chengyi Chen   +6 more
wiley   +1 more source

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

open access: yesInfoMat, EarlyView.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

High‐Throughput Screening of Rare‐Earth Compounds as Promising Deep‐Ultraviolet Light Emitters

open access: yesMaterials Genome Engineering Advances
AlN and its alloys are the state‐of‐the‐art materials for deep‐ultraviolet (DUV) light emitting diodes (LEDs). The limited number of materials known acts as a bottleneck for the design of efficient DUV light emitters.
Xun Xu   +5 more
doaj   +1 more source

AlGaN-Based Multiple Quantum Well Deep Ultraviolet Light-Emitting Diodes With Polarization Doping

open access: yesIEEE Photonics Journal, 2016
The characteristics of AlGaN-based deep-ultraviolet (DUV) light-emitting diodes (LEDs) with polarization-doped p-type layers were numerically analyzed.
Jianjun Chang   +7 more
doaj   +1 more source

High responsivity and flexible deep-UV phototransistor based on Ta-doped β-Ga2O3

open access: yesnpj Flexible Electronics, 2022
Deep-ultraviolet (DUV) phototransistors have shown great potential applications in UV imaging, artificial intelligence, and wearable optoelectronics. Among a large number of wide bandgap semiconductors, the quasi-two-dimensional β-Ga2O3 is considered as ...
Xiao-Xi Li   +9 more
doaj   +1 more source

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