Solar blind (Al,Ga)N metal-semiconductor-metal devices for high performance flame detection
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A semiconductor device includes a semiconductor substrate, a photon avalanche detector in the semiconductor substrate. The photon avalanche detector includes an anode of a first conductivity type and a cathode of a second conductivity type. A guard ring is ...
The underlying physical mechanism of the so-called colossal dielectric constant phenomenon in CaCu3Ti4O12 CCTO thin films were investigated by using semiconductor theories and methods. The semiconductivity of CCTO thin films originated from the acceptor de ...
We study the interfacial electronic properties of a model Si-SiO2-Si structure which is intended to simulate the substrate-oxide-polysilicon stack in metal-oxide-semiconductor devices. The structural properties of this model are shown to match closely thos ...
The constant-current (CC) method uses a current criterion to determine the threshold voltage (VTH) of metal-oxide-semiconductor (MOS) field-effect transistors. We show that using the same current criterion in both saturation and linear modes leads to incon ...
Semiconductor nanowires are an emerging class of nanostructures that represent attractive building blocks for nanoscale electronic and photonic devices. To the present, nanowires are synthesized on a small scale by experimentally demanding gas phase deposi ...
Modulation doped AlGaAs/GaAs core-shell nanowire structures were grown by molecular beam epitaxy. A Si delta-doping was introduced in the AlGaAs shell around the {110} facets of the GaAs core. The wires are typically highly resistive at low temperatures. H ...
Nucleation and growth models are well developed for nucleation on homogeneous substrates, and they can typically be described-in terms of three energy parameters. Nucleation on substrates containing point-defect traps has been investigated, at the cost of ...
Solar blind detectors based on AlGaN heterostructures grown on sapphire by Molecular Beam Epitaxy and with a dielectric interference filter deposited on the back side are demonstrated to provide record spectral selectivity. Rejection ratios of 2 x 10(4), a ...
This thesis aims at the site-specific realization of self-assembled field-effect transistors (FETs) based on semiconducting Zinc oxide NWs and their application towards chemical and bio-sensing in liquid medium. At first, a solution based growth method for ...
Solar blind detectors based on AlGaN grown by Molecular Beam Epitaxy and Metal Organic Vapor Phase Epitaxy have been fabricated and characterized. Metal Semiconductor Metal (MSM) detectors and vertical Schottky detectors have been realized, with a design t ...