Unidirectional sensing characteristics of structured Au–GaN–Pt diodes for differential-pair hydrogen sensors

Moisture Insensitive PMMA Coated Pt-AlGaN/GaN Diode Hydrogen Sensor and Its Thermal Stability

“…8,10,15,[26][27][28][29] This leads to a reduction of the Schottky barrier height, which in turn modulates the current flowing in the device at a fixed operating voltage. [30][31][32] The past decade has seen a string of innovations that have increased the detection sensitivities in AlGaN/GaN-based hydrogen sensing, including the (i) use of catalytically active Pt nano-networks on the gate [11][12][13]23 (ii) surface roughening of the active area using photo-chemical etching to increase the density of available adsorption sites, 10,12,13,16,26 and (iii) using different orientations and surface polarities. 12,14,15,18 In the latter case, it has been observed that semipolar and c-plane N-polar GaN have much different responses compared to conventional c-plane Ga-face GaN due to the different affinities of hydrogen for the different atomic planes and polarities.…”

Hydrogen Leakage Sensing and Control: (Review)

“…palladium-based alloys. This MOS structure may work as a capacitive sensor, a MOSFET transistor or a Schottky diode [44][45][46][47][48]. This type of technology can operate in the absence of oxygen.…”

The feasibility of distributed hydrogen production from renewable energy sources and the financial contribution from UK motorists on environmental grounds

“…Sabio et al (2012) modelled the optimum future Spanish hydrogen supply chain from both a cost perspective and also considering multiple categories of environmental impact both relating to the ecosystem and human health caused as a result of the supply chain's operation. In a shift away from the work of Almansoori and Shah, a greater inclusion of electrolytic hydrogen from RES was made in order to lower GHG emissions.…”