Results 51 to 60 of about 1,029 (198)
Micromachines, 2022 The trap states and defects near the active region in deep-ultraviolet (DUV) light-emitting diodes (LED) were investigated through wavelength-dependent photocurrent spectroscopy.
Seungyoung Lim +6 more
doaj +1 more source
IEEE Photonics Journal, 2022 The external quantum efficiency (EQE) of AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) is still far from satisfactory due to the main issues of electron leakage and insufficient hole injection.
Mengran Liu, Chao Liu
doaj +1 more source
Physica Scripta, 2022 Abstract We report a numerical analysis of the variation of Aluminium (Al) composition in Al Gallium Nitride (AlGaN)-based Deep-Ultraviolet Light-Emitting Diode (DUV-LED) and its effects on the carrier concentration, radiative recombination, and photoluminescence (PL).
Mohammad Amirul Hairol Aman +5 more
openaire +2 more sources
FlexMat, 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
, 2022 A DUV-LED with a graded superlattice electron blocking layer (GSL-EBL) is demonstrated to show improved carrier injection into the multi-quantum well region. The structures of modified EBLs are designed via simulation.
Kim, Taeyoung +6 more
core +1 more source
Progress in semiconductor diamond photodetectors and MEMS sensors
Functional Diamond, 2022 Diamond with an ultra-wide bandgap shows intrinsic performance that is extraordinarily superior to those of the currently available wide-bandgap semiconductors for deep-ultraviolet (DUV) photoelectronics and microelectromechanical systems (MEMS).
Meiyong Liao
doaj +1 more source
DEEP ULTRAVIOLET LIGHT EMITTING DIODES (DUV LEDS)
Journal of Engineering Science (Chişinău), 2018 There are a variety of applications for devices that extend into the deep-UV, including biological agent detection and optical storage. The nitride material system is a set of semiconducting compounds that have wavelengths that span a broad range, from yellow to deep-UV. AlGaN has a direct bandgap that extends into the deep-UV range; the device-quality
openaire +2 more sources
Recent progress and challenges in top‐emitting quantum dot light‐emitting diodes
FlexMat, 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
Light: Science & Applications, 2022 This work successfully achieves a strain-free AlN film with low dislocation density for DUV-LED through graphene-driving strain-pre-store engineering and present the unique mechanism of strain-relaxation in QvdW epitaxy.
Hongliang Chang +14 more
doaj +1 more source
Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces
InfoMat, 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