Impact ionization coefficients and critical electric field in GaN

T Maeda, T Narita, S Yamada, T Kachi… - Journal of Applied …, 2021 - pubs.aip.org
Avalanche multiplication characteristics in a reverse-biased homoepitaxial GaN p–n junction
diode are experimentally investigated at 223–373 K by novel photomultiplication …

Nanopores in GaN by electrochemical anodization in hydrofluoric acid: Formation and mechanism

D Chen, H Xiao, J Han - Journal of Applied Physics, 2012 - pubs.aip.org
We report the use of hydrofluoric acid (HF) as an electrolyte in etching and porosifying GaN.
HF is found to be effective in rendering a wide range of nanoporous morphology, from …

[HTML][HTML] High efficiency hexagonal boron nitride neutron detectors with 1 cm2 detection areas

A Maity, SJ Grenadier, J Li, JY Lin, HX Jiang - Applied Physics Letters, 2020 - pubs.aip.org
We report the realization of 1 cm 2 hexagonal boron nitride (h-BN) thermal neutron detectors
with an unprecedented detection efficiency of 59%. This was achieved through …

Strain relaxation effect by nanotexturing InGaN/GaN multiple quantum well

V Ramesh, A Kikuchi, K Kishino, M Funato… - Journal of Applied …, 2010 - pubs.aip.org
The relaxation of lattice-mismatched strain by deep postetching was systematically
investigated for InGaN/GaN multiple quantum wells (MQWs). A planar heterojunction wafer …

Steady-state and time-resolved photoluminescence from relaxed and strained GaN nanowires grown by catalyst-free molecular-beam epitaxy

JB Schlager, KA Bertness, PT Blanchard… - Journal of applied …, 2008 - pubs.aip.org
We report steady-state and time-resolved photoluminescence (TRPL) measurements on
individual GaN nanowires (⁠ 6–20 μ m in length, 30–940 nm in diameter) grown by a …

Long-Range Carrier Diffusion in Quantum Wells and Implications from Fundamentals to Devices

A David - Physical Review Applied, 2021 - APS
Photoluminescence measurements on high-quality (In, Ga) N quantum wells reveal that
carriers diffuse laterally to long distances at room temperature, up to tens of microns. This …

Role of intrinsic surface states in efficiency attenuation of GaN‐based micro‐light‐emitting‐diodes

F Jiang, BR Hyun, Y Zhang, Z Liu - physica status solidi (RRL) …, 2021 - Wiley Online Library
The effects of an intrinsic nonpolar surface on internal quantum efficiency (IQE) are
numerically investigated for gallium nitride (GaN)‐based micro‐light emitting‐diodes (μ …

Carrier Diffusion in : A Cathodoluminescence Study. III. Nature of Nonradiative Recombination at Threading Dislocations

J Lähnemann, VM Kaganer, KK Sabelfeld… - Physical Review …, 2022 - APS
We investigate the impact of threading dislocations with an edge component (a or a+ c type)
on carrier recombination and diffusion in Ga N (0001) layers close to the surface as well as …

Dislocation contrast in cathodoluminescence and electron-beam induced current maps on GaN (0 0 0 1)

KK Sabelfeld, VM Kaganer, C Pfüller… - Journal of Physics D …, 2017 - iopscience.iop.org
We theoretically analyze the contrast observed at the outcrop of a threading dislocation at
the GaN (0 0 0 1) surface in cathodoluminescence and electron-beam induced current …

Ultrafast single photon emitting quantum photonic structures based on a nano-obelisk

JH Kim, YH Ko, SH Gong, SM Ko, YH Cho - Scientific reports, 2013 - nature.com
A key issue in a single photon source is fast and efficient generation of a single photon flux
with high light extraction efficiency. Significant progress toward high-efficiency single photon …