Results 41 to 50 of about 39,461 (213)

Phonon plasmon interaction in ternary group-III-nitrides [PDF]

open access: yes, 2012
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett.
Hoffmann, Axel   +4 more
core   +1 more source

Investigation of Light-Extraction Efficiency of Flip-Chip AlGaN-Based Deep-Ultraviolet Light-Emitting Diodes Adopting AlGaN Metasurface

open access: yesIEEE Photonics Journal, 2021
Herein, we investigate the influence of an AlGaN metasurface on AlGaN-based deep-ultraviolet light-emitting diodes' light-extraction efficiency by utilizing the 3D finite-difference time-domain method.
Joosun Yun, Hideki Hirayama
doaj   +1 more source

Insights Into the Two-Dimensional MoS2 Grown on AlGaN(GaN) Substrates by CVD Method

open access: yesIEEE Photonics Journal, 2021
Two-dimensional (2D) MoS2 was grown on AlGaN(GaN) substrates by chemical vapor deposition (CVD) and 2D-3D MoS2-AlGaN(GaN) heterostructures were formed. The MoS2 crystal on AlGaN surface has a mixed and irregular shape including single and multiple layers,
Guofeng Yang   +8 more
doaj   +1 more source

Dynamic Transconductance Dispersion Characterization of Channel Hot-Carrier Stressed 0.25μm AlGaN/GaN HEMTs [PDF]

open access: yes, 2012
Using the dynamic transconductance frequency dispersion technique, we characterize unstressed and hot-electron stressed short-channel AlGaN/GaN high-electron-mobility transistors.
Kuball, M., Silvestri, M., Uren, M. J.
core   +2 more sources

Polariton lasing in AlGaN microring with GaN/AlGaN quantum wells

open access: yesAPL Photonics, 2023
Microcavity polaritons are strongly interacting hybrid light–matter quasiparticles, which are promising for the development of novel light sources and active photonic devices. Here, we report polariton lasing in the UV spectral range in microring resonators based on GaN/AlGaN slab waveguides, with experiments carried out from 4 K up to room temperature.
Delphan, A.   +9 more
openaire   +4 more sources

A sub-critical barrier thickness normally-off AlGaN/GaN MOS-HEMT [PDF]

open access: yes, 2014
A new high-performance normally-off gallium nitride (GaN)-based metal-oxide-semiconductor high electron mobility transistor that employs an ultrathin subcritical 3 nm thick aluminium gallium nitride (Al0.25Ga0.75N) barrier layer and relies on an induced ...
Al-Khalidi, Abdullah   +7 more
core   +1 more source

Enhanced overall efficiency of GaInN-based light-emitting diodes with reduced efficiency droop by Al-composition-graded AlGaN/GaN superlattice electron blocking layer [PDF]

open access: yes, 2019
AlxGa1-xN/GaN superlattice electron blocking layers (EBLs) with gradually decreasing Al composition toward the p-type GaN layer are introduced to GaInN-based high-power light-emitting diodes (LEDs).
David Meyaard   +8 more
core   +1 more source

Optically pumped terahertz laser based on intersubband transitions in a GaN/AlGaN double quantum well [PDF]

open access: yes, 2005
A design for a GaN/AlGaN optically pumped terahertz laser emitting at 34 µm (ΔE~36 meV) is presented. This laser uses a simple three-level scheme where the depopulation of the lower laser level is achieved via resonant longitudinal-optical-phonon ...
Harrison, P.   +5 more
core   +1 more source

Interband Tunneling for Hole Injection in III-Nitride Ultra-violet Emitters

open access: yes, 2015
Ultra-violet emitters have several applications in the areas of sensing, water purification, and data storage. While the III-Nitride semiconductor system has the band gap region necessary for ultraviolet emission, achieving efficient ultraviolet solid ...
Akyol, Fatih   +8 more
core   +1 more source

AlGaN /GaN superlattice based p-channel field effect transistor (pFET) with TMAH treatment

open access: yes, 2019
To realize the full spectrum of advantages that the III-nitride materials system offers, the demonstration of p-channel III-nitride based devices is valuable.
Hatui, Nirupam   +6 more
core   +1 more source

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