Abstract:
In one aspect, a cathodoluminescence (CL) spectroscopic tomography device includes a sample stage to support a sample. An electron beam source scans an electron beam over the sample to yield light emission by the sample. A reflective element directs the light emission by the sample to a light detector. A controller controls operation of the sample stage, the electron beam source, and the light detector. In one aspect, a CL spectroscopic tomography device includes an electron beam source which directs an electron beam at an object to yield an emission by the object. A detector detects the emission. A controller receives information from the detector related to the detected emission. The controller derives a two-dimensional (2D) CL map from the information related to the detected emission, and derives a three-dimensional (3D) CL tomogram from the 2D CL map.
Abstract:
A solar cell includes a nano-scale patterned back contact layer; a spacer layer on the nano-scale patterned back contact layer; a semiconductor layer on the spacer layer; and a light transmissive first electrode on the semiconductor layer.
Abstract:
Refractive index modifications are written in silica glass using a combination of ion-exchange and masking techniques. The index increase in the irradiated regions of the glass is caused by the formation of silver nanocrystals under the influence of an ion beam. The index increase is highly dispersive. Self-assembled colloidal masks or lithographically defined masks are used to define micropatterns with pre-defined shape, size and symmetry. These highly dispersive metallo-dielectric micropattens can find applications in a variety of (optically switchable) optical devices, including gratings, switches, multiplexers or photonic crystals. Electronic or magnetic devices including regions of nanocrystalline aggregates may also be formed in a similar way.
Abstract:
In one aspect, a cathodoluminescence (CL) spectroscopic tomography device includes a sample stage to support a sample. An electron beam source scans an electron beam over the sample to yield light emission by the sample. A reflective element directs the light emission by the sample to a light detector. A controller controls operation of the sample stage, the electron beam source, and the light detector. In one aspect, a CL spectroscopic tomography device includes an electron beam source which directs an electron beam at an object to yield an emission by the object. A detector detects the emission. A controller receives information from the detector related to the detected emission. The controller derives a two-dimensional (2D) CL map from the information related to the detected emission, and derives a three-dimensional (3D) CL tomogram from the 2D CL map.
Abstract:
A thin-film broadband antireflection layer for use with an optical element or an optoelectronic device is described, wherein the thin-film broadband antireflection layer comprises: at least a thin-film dielectric layer; and, at least one array of nanoparticles disposed onto or in said thin-film dielectric layer, wherein the dielectric constant of said nanoparticles is substantially distinct from distinct from the dielectric constant of said dielectric layer.
Abstract:
An integrated plasmonic sensing device (100) is described wherein the integrated device (100) comprises: at least one optical source (106) comprising a first conductive layer (102) and a second conductive layer (111), and an active optical source layer (110) between at least part of said first and second conductive layers (102, 111); at least one nanocavity (101) extending through said first and second conductive layers and said active optical source layer, wherein said optical source (106) is configured to generate surface plasmon modes suitable for exciting one or more resonances in said nanocavity (101); and, at least one optical detector (104) comprising at least one detection region formed in the vicinity of said nanocavity resonator, wherein said optical detector (104) is configured to sense excited resonances in said nanocavity (101).
Abstract:
A solar cell includes a nano-scale patterned back contact layer; a spacer layer on the nano-scale patterned back contact layer; a semiconductor layer on the spacer layer; and a light transmissive first electrode on the semiconductor layer.
Abstract:
Refractive index modifications are written in silica glass using a combination of ion-exchange and masking techniques. The index increase in the irradiated regions of the glass is caused by the formation of silver nanocrystals under the influence of an ion beam. The index increase is highly dispersive. Self-assembled colloidal masks or lithographically defined masks are used to define micropatterns with pre-defined shape, size and symmetry. These highly dispersive metallo-dielectric micropattens can find applications in a variety of (optically switchable) optical devices, including gratings, switches, multiplexers or photonic crystals. Electronic or magnetic devices including regions of nanocrystalline aggregates may also be formed in a similar way.
Abstract:
In one aspect, a cathodoluminescence (CL) spectroscopic tomography device includes a sample stage to support a sample. An electron beam source scans an electron beam over the sample to yield light emission by the sample. A reflective element directs the light emission by the sample to a light detector. A controller controls operation of the sample stage, the electron beam source, and the light detector. In one aspect, a CL spectroscopic tomography device includes an electron beam source which directs an electron beam at an object to yield an emission by the object. A detector detects the emission. A controller receives information from the detector related to the detected emission. The controller derives a two-dimensional (2D) CL map from the information related to the detected emission, and derives a three-dimensional (3D) CL tomogram from the 2D CL map.
Abstract:
A source for producing and heralding single guided excitations such as photons, surface plasmons, or optical phonons is described. The source may produce guided excitations within a very short time window and with close to 100% probability. The energy of excitations can be easily tuned in this source. The design may intrinsically produce photons guided in an optical fibre or planar waveguide, thus maximizing the collection efficiency. The single photon source excites guided modes in an optical fibre by means of an electron beam. Different configurations are proposed in which detection of the electron after releasing energy and momentum to the photon reveals its creation.