Gallium nitride (GaN) nanostructures and their gas sensing properties: a review

MAH Khan, MV Rao - Sensors, 2020 - mdpi.com
In the last two decades, GaN nanostructures of various forms like nanowires (NWs),
nanotubes (NTs), nanofibers (NFs), nanoparticles (NPs) and nanonetworks (NNs) have …

H2, H2S gas sensing properties of rGO/GaN nanorods at room temperature: Effect of UV illumination

M Reddeppa, BG Park, MD Kim, KR Peta… - Sensors and Actuators B …, 2018 - Elsevier
In this work, reduced graphene oxide (rGO)/GaN nanorods (NRs) hybrid structure based
sensors for hydrogen (H 2) and hydrogen sulfide (H 2 S) gases has been demonstrated at …

Highly-sensitive H2 sensor operating at room temperature using Pt/TiO2 nanoscale Schottky contacts

H Kwon, Y Lee, S Hwang, JK Kim - Sensors and Actuators B: Chemical, 2017 - Elsevier
Despite growing demands for high performance hydrogen (H 2) sensors operating at low
temperature, metal oxides-based H 2 sensors intrinsically require an elevated operating …

Low operating temperature NO gas sensors based hydrogen peroxide treated GaN nanorods

M Reddeppa, TKP Nguyen, BG Park, SG Kim… - Physica E: Low …, 2020 - Elsevier
In recent days, surface treatment strategies have employed to enhance the active sites for
chemisorption of gas molecules in gas sensors. In this work, the simple and effective …

Development of risk mitigation guidance for sensor placement inside mechanically ventilated enclosures–Phase 1

AV Tchouvelev, WJ Buttner, D Melideo… - International journal of …, 2021 - Elsevier
Abstract Guidance on Sensor Placement was identified as the top research priority for
hydrogen sensors at the 2018 HySafe Research Priority Workshop on hydrogen safety in the …

Hydrogen sensing performance of a nickel oxide (NiO) thin film-based device

PC Chou, HI Chen, IP Liu, CC Chen, JK Liou… - International Journal of …, 2015 - Elsevier
An interesting nickel oxide (NiO) thin film-based hydrogen sensor device, prepared by a low-
powered (50 W) radio-frequency (RF) sputtering process, is studied and demonstrated. The …

Ultrafast H2 gas nanosensor for ppb-level H2 gas detection based on GaN honeycomb nanonetwork

A Zhong, B Shen, T Wang, H Jin, Y Xie, D Zhang… - Sensors and Actuators B …, 2021 - Elsevier
Material architecture design plays a crucial role in developing gas sensors. GaN has been
proposed as a promising material for H 2 gas sensor. However, it is subject to long response …

Pt-AlGaN/GaN hydrogen sensor with water-blocking PMMA layer

S Jung, KH Baik, F Ren, SJ Pearton… - IEEE Electron Device …, 2017 - ieeexplore.ieee.org
One of the biggest issues with GaN-based hydrogen sensors is their sensitivity to humidity in
the ambient. We demonstrate that encapsulation of Pt-AlGaN/GaN Schottky diode with poly …

Tailoring the H2 gas detection range of the AlGaN/GaN high electron mobility transistor by tuning the Pt gate thickness

A Zhong, A Sun, B Shen, H Yu, Y Zhou, Y Liu… - International Journal of …, 2022 - Elsevier
H 2 gas sensors for different applications require various detection ranges, such as 1–100
ppm for exhale breath test and 0–40000 ppm for H 2 energy vehicles. Coarse-tuning of the …

[HTML][HTML] Nanoscale Schottky contacts to GaN: Theoretical study and a brief review

H Kim, BJ Choi - AIP Advances, 2023 - pubs.aip.org
Nanostructured GaN materials, including nanowires and nanorods, are advantageous for
nanoscale devices, owing to their higher surface-to-volume ratio than thin films. Despite the …