Unraveling carrier distribution in far-UVC LEDs by temperature-dependent electroluminescence measurements

J Höpfner, F Kühl, M Schilling, A Muhin… - Applied Physics …, 2024 - pubs.aip.org
The hole transport and the carrier distribution in AlGaN-based far-ultraviolett (UVC) light
emitting diodes (LEDs) emitting around 233 nm was investigated. Temperature-dependent …

Controlled nano-roughening of the GaN surface by post-growth thermal annealing

W Malek, M Bouzidi, N Chaaben, W Belgacem… - Applied Surface …, 2024 - Elsevier
GaN-based semiconductor structures have been widely used in photonic, electronic, and
optoelectronic devices. However, due to the lack of lattice-matched substrates for GaN …

Radiative Recombination and Carrier Injection Efficiencies in 265 nm Deep Ultraviolet Light‐Emitting Diodes Grown on AlN/Sapphire Templates with Different Defect …

A Muhin, M Guttmann, V Montag, N Susilo… - … status solidi (a), 2023 - Wiley Online Library
The electro‐optical characteristics of deep ultraviolet light‐emitting diodes (DUV LEDs)
emitting at 265 nm and grown on AlN/sapphire templates with different threading dislocation …

[HTML][HTML] Point defect effects in AlGaN 270-nm light emitting diodes introduced by MeV electron and proton irradiation

AY Polyakov, LA Alexanyan, IV Schemerov… - APL Materials, 2024 - pubs.aip.org
Point defects were controllably introduced into 270 nm AlGaN Light-Emitting Diodes (LEDs)
by 5 MeV electron and 1.1 MeV proton irradiations to examine the effect on electrical and …

Effects of the diameter of thermally generated nanopits on carrier dynamics in AlGaN/GaN heterostructures

M Bouzidi, W Malek, N Chaaben… - Optical …, 2022 - spiedigitallibrary.org
The size and density of nanopits, generated at the surface of their top layer, strongly affect
the electrical and optical properties of AlGaN-based structures. Therefore, the control of the …

[PDF][PDF] Radiative recombination and carrier injection efficiencies in 265 nm deep UV LEDs grown on AlN/sapphire templates with different defect densities

A Muhin, M Guttmann, V Montag, N Susilo… - … . Status Solidi A, 2022 - researchgate.net
AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) with emission wavelengths
shorter than 280 nm have multiple applications ranging from disinfection of surfaces,[1, 2, 3] …

Role of Oxygen Incorporation in High Temperature Annealed AlGaN

N Zainal, S Hagedorn, C Netzel… - … status solidi (a), 2023 - Wiley Online Library
High‐temperature annealing (HTA) is a powerful technique to decrease dislocation density
in AlN, which can also be applied on AlGaN. This work investigates the impact of using …

High‐Temperature Annealing of Si‐Doped AlGaN

N Zainal, S Hagedorn, C Netzel, T Kolbe… - … status solidi (a), 2024 - Wiley Online Library
This study explores the impact of Si do** on the material properties of high‐temperature
annealed (HTA) Al0. 71Ga0. 29N layers, which are grown on AlN/sapphire templates. The …

Conductive n-type gallium nitride thin films prepared by sputter deposition

P Loretz, T Tschirky, F Isa, J Patscheider… - Journal of Vacuum …, 2022 - pubs.aip.org
Given the recent increase in the demand for gallium nitride (GaN) in different markets like
optoelectronics and power devices, the request for epitaxially grown GaN will further …

Impact of Passivation on Thermal Stability of AlGaN/GaN HEMTs Under High-Temperature Annealing

G Zheng, X Chen, L Jiao, Y Wang… - 2024 IEEE International …, 2024 - ieeexplore.ieee.org
This study investigates the 2DEG sheet resistance R_sh of conventional and passivated
AlGaN/GaN HEMT through TLM structures. The impact of high temperature annealing on the …