P. Lavenus

TL;DR: High-resolution cathodoluminescence on cleaved nanowires allows the location with high precision of the origin of different emitted wavelengths and demonstrates that the blue peak originates from the emission of the radial quantum well on the m-planes, whereas the green peak arises from the In-rich region at the junction between them-planes and the semipolar planes.

TL;DR: MOVPE-grown (metal-organic vapor-phase epitaxy) InGaN/GaN p-n junction core-shell nanowires have been used for device fabrication to achieve a good spectral matching between the emission wavelength and the detection range.

TL;DR: In this paper, the fabrication of graphene contact to GaN nanowire ensemble and the demonstration of photodetectors using chemical vapor deposition-grown few-layered graphene as a transparent electrode were reported.

TL;DR: In this article, a ZnO nanowire ultraviolet photodetector with a top transparent electrode made of a few-layered graphene sheet is presented, which exhibits a peak responsivity at 370nm wavelength and shows a sub bandgap response down to 415nm explained by an Urbach tail with a characteristic energy of 83'meV. The detector is shown to be visible-blind and to present a responsivity larger than 104'A/W in the near ultraviolet range.

TL;DR: The interface between the nanowire core and the radially grown layer is shown to produce in some cases a transitory EBIC signal, which is interpreted as a consequence of the In and Al gradients in the quantum well and in the electron blocking layer, which influence the carrier extraction efficiency.