Abstract: The present invention relates to a photovoltaic material and a photovoltaic device comprising the photoactive material arranged between a hole transport layer and an electron acceptor layer. The present invention also relates to the use of the photovoltaic material.

Abstract: Speckle contrast optical tomography system provided with at least one point source and multiple detectors, means for providing different source positions, the point source having a coherence length of at least the source position-detector distance and means for arranging the source position-detector pairs over a sample to be inspected, the system being further provided with means for measuring the speckle contrast; the speckle contrast system of the invention thus capable of obtaining 3D images.

Abstract: The present inventions relates to a substrate for a photolithographic mask comprising a coating deposited on a rear surface of the substrate, wherein the coating comprises (a) at least one electrically conducting layer, and (b) wherein a thickness of the at least one layer is smaller than 30 nm, preferably smaller than 20 nm, and most preferably smaller than 10 nm.

Abstract: Photovoltaic nanocomposite and solar cell device including the photovoltaic nanocomposite, where the photovoltaic nanocomposite includes a film of solution processed semiconductor materials having an n-type material selected from n-type quantum dots and n-type nanocrystals, and a p-type material selected from p-type quantum dots and p-type nanocrystals, and where the n-type material has a conduction band level at least equal, compared to vacuum level, to that of the p-type material, the p-type material has a valence band at the most equal, compared to vacuum level, to that of the n-type material. at least a portion of the n-type material and at least a portion of the p-type material are present in a bulk nano-heterojunction binary nanocomposite layer having a blend of the n-type material and the p-type material.

Abstract: An optoelectronic apparatus, such as a photodetector apparatus comprising a substrate (1), a dielectric layer (2), a transport layer, and a photosensitizing layer (5). The transport layer comprises at least a 2-dimensional semiconductor layer (3), such as MoS2, and the photosensitizing layer (5) comprises colloidal quantum dots. Enhanced responsivity and extended spectral coverage are achieved with the disclosed structures.

Abstract: The invention comprises an optoelectronic platform with a carbon-based conduction layer and a layer of colloidal quantum dots on top as light absorbing material. Photoconductive gain on the order of 106 is possible, while maintaining de operating voltage low. The platform can be used as a transistor.

Abstract: The invention is based on a process and system for producing random numbers by means of a quantum random number generator where the method comprises the steps of operating a laser in single mode and high modulation bandwidth by means of an electrical pulse driver, transforming the phase randomized optical pulses produced before in optical pulses with random amplitude and detecting the resulting random amplitude signals by means of a fast photodiode. The numbers thus produced are truly random.

Abstract: An electronic platform comprising a substrate made of a ABO3 crystal (2) and at least one layer of a two-dimensional conducting sheet of carbon atoms (1) of a thickness between one and four atoms, characterized in that the conducting layer(s) is (are) placed on top of a face of the crystal whose orthogonal axis is at an angle up to 35° of the crystal's spontaneous polarization or c-axis. The invention achieves a sheet resistance lower than 1 ?/square at temperatures higher than 77K.

Abstract: Apparatus for measuring light scattering of a sample comprising a light beam source, means for collimating the beam and making it impinge on the sample in a perpendicular direction, at least one light sensor, and at least one spatial filter between the sample and the optical sensor, provided with two apertures, means for measuring the total power reaching the sensor and means for measuring the power of beams with a low k vector after the beam traverses the filter. The invention provides thus a simplified, portable and compact device for measuring different parameters like haze, turbidity, etc. can be built, for any sample and without the need of changing detectors.

Abstract: The main object of the present invention is to provide a semitransparent photo conversion device that enhances harvesting of visible sunlight. For this purpose, a semitransparent photovoltaic cell is provided with a multilayer structure that can be used to change the color hue appearance of the cell while guaranteeing a minimum change in the light absorption capability. The photo conversion device has a direct or inverted architecture that comprises a first light transmissive electrical contact overlaying a transparent substrate, a charge blocking layer overlying the first light transmissive electrical contact and underlying the active organic photosensitive material, a second charge blocking layer overlying the active organic photosensitive material, a second light transmissive electrical contact overlying the second charge blocking layer, and a multilayer structure overlying the second light transmissive electrical contact.

Abstract: The present invention relates to a composition for topical application on skin for photoepilation comprising nanocomplexes which comprise a nanoparticle supporting an LSP resonance which is coated with at least a chemical compound, wherein said chemical compound is selected from the group consisting of polyionic polymers, heterobifunctional compound of the surface assembled monolayer type, antibodies and their mixtures. The present invention also relates to a photoepilation method which comprises the steps of (i) applying to the skin surface the composition for topical application of the present invention, and (ii) applying a radiation to said surface of the skin.

Abstract: The present application discloses a method for producing a stable ultra thin metal film that comprises the following steps: a) deposition, on a substrate, of an ultra thin metal film, such as an ultra thin film of nickel, chromium, aluminum, or titanium; b) thermal treatment of the ultra thin metal film, optionally in combination with an O2 treatment; and c) obtaining a protective oxide layer on top of the ultra thin metal film.

Abstract: Pulsed light source comprising pulse generation means (1), such as an optical oscillator, whose output is divided into three arms: two arms (3, 4) to generate a CEP-stable, ultrabroadband idler output; and a third arm (5) to generate a narrowband pump output. The pump output and idler output seed an OPCPA (13), generating stable ultrashort pulses.

Abstract: Photovoltaic nanocomposite and solar cell device including the photovoltaic nanocomposite, where the photovoltaic nanocomposite includes a film of solution processed semiconductor materials having an n-type material selected from n-type quantum dots and n-type nanocrystals, and a p-type material selected from p-type quantum dots and p-type nanocrystals, and where the n-type material has a conduction band level at least equal, compared to vacuum level, to that of the p-type material, the p-type material has a valence band at the most equal, compared to vacuum level, to that of the n-type material. at least a portion of the n-type material and at least a portion of the p-type material are present in a bulk nano-heterojunction binary nanocomposite layer having a blend of the n-type material and the p-type material.

Abstract: An infrared photoconversion device comprising a collector with at least an active layer made of a single sheet of doped single-layer, bilayer, or multilayer graphene patterned as nanodisks or nanoribbons. The single sheet of doped graphene presents high absorbance and thus, the efficiency of devices such as photovoltaic cells, photodetectors, and light emission devices can be improved by using graphene as the central absorbing or emitting element. These devices become tunable because their peak absorption or emission wavelength is changed via electrostatic doping of the graphene.

Abstract: An infrared photoconversion device comprising a collector with at least an active layer made of a single sheet of doped single-layer, bilayer, or multilayer graphene patterned as nanodisks or nanoribbons. The single sheet of doped graphene presents high absorbance and thus, the efficiency of devices such as photovoltaic cells, photodetectors, and light emission devices can be improved by using graphene as the central absorbing or emitting element. These devices become tunable because their peak absorption or emission wavelength is changed via electrostatic doping of the graphene.

Abstract: A photovoltaic device cell comprising a first light transmissive electrical contact, an active region, a second light transmissive electrical contact, and a layered structure enclosing the active region, the layered structure being formed of two parts, a first part underlying the first light transmissive electrical contact and a second part overlying the second electrical contact and wherein the constants of the layers in these layered structures are interdependent such that light is localized within the active region.

Abstract: Pulsed light source comprising pulse generation means (1), such as an optical oscillator, whose output is divided into three arms: two arms (3, 4) to generate a CEP-stable, ultrabroadband idler output; and a third arm (5) to generate a narrowband pump output. The pump output and idler output seed an OPCPA (13), generating stable ultrashort pulses.

Abstract: The present invention relates to a transparent electrode comprising an ultra thin metal conductor (2) with a thickness between 1 nm and 10 nm and a metal grid in contact with the ultra thin metal conductor (3), the metal grid comprising openings. The invention relates also to a method for its manufacture. It can be applied in, for example, optoelectronic devices. Thanks to the metal grid, the sheet resistance of the electrode can be lowered without compromising the transparency of the electrode.