Abstract: An organic photodetector (OPD) comprises a microcavity defined by a reflective electrode and a semi-transparent electrode, wherein the microcavity comprises a transparent conductive oxide layer and an active layer comprising an n-type organic semiconductor and a p-type organic semiconductor, and wherein the blend of the n-type organic semiconductor and the p-type organic semiconductor exhibits low absorption at the resonance wavelength, which results in an excellent optical sensitivity in a favorably narrow wavelength region and allows to tune the response to different wavelengths depending on the desired application. In addition, methods of producing such organic photodetectors and methods of tuning the resonance of a microcavity formed in an organic photodetector (OPD) to a predetermined wavelength are provided.

Abstract: An analytical test device (12) includes one or more light emitters (13) configured to emit light within a first range of wavelengths (??a). The analytical test device (12) also includes one or more first photodetectors (14), each first photodetector (14) being sensitive to a second range of wavelengths (??b) around a first wavelength. The analytical test device (12) also includes one or more second photodetectors (15), each second photodetector (15) being sensitive to a third range of wavelengths (??c) around a second wavelength, the second wavelength being different to the first wavelength. The analytical test device (12) also includes a correction module (16) configured to receive signals (19, 20) from the first and second photodetectors (14, 15) and to generate a corrected signal (21) based on a weighted difference of the signals (19, 20) from the first and second photodetectors (14, 15).

Abstract: A formulation comprising an n-type organic semiconductor, a p-type organic semiconductor and a solvent mixture comprising a first solvent and a second solvent wherein the first solvent is an alkylated aromatic hydrocarbon, for example trimethylbenzene, and the second solvent is a benzene substituted with two or more substituents including at least two C1-6 alkoxy groups, for example dimethoxybenzene. The formulation may be used to form the photoactive layer (3) of a photosensitive organic electronic device, for example an organic photo detector, comprising an anode (2) a cathode (4) and the photoactive layer between the anode and the cathode.

Abstract: An organic photodetector comprising an anode (107), a cathode (103) and a photoactive bulk heterojunction layer (105) comprising an organic electron donor and an organic electron acceptor between the anode and the cathode wherein the anode (107) comprises a material having a work function of at least 5.0 eV from vacuum level. The anode may comprise or consist of a conductive polymer.

Abstract: This invention relates to a formulation comprising p-type and n-type organic semiconductors and a solvent mixture comprising an aromatic hydrocarbon substituted with one or more substituents selected from alkyl and alkoxy groups and a unsubstituted or substituted benzothiazole, for example 2-methylbenzothiazole. The formulation may be used to form the photoactive layer (3) of a photosensitive organic electronic device, for example an organic photodetector, comprising an anode (2) a cathode (4) and the photoactive layer between the anode and the cathode.

Abstract: A method for the fabrication of organic electronic devices includes forming a fluoropolymer layer over a first area of a substrate and a first set of organic electronic devices. The first set of organic electronic devices are pre-fabricated on a second area of the substrate. The method further includes selectively removing the formed fluoropolymer layer from areas within the first area of the substrate by using a liquid solvent. The method further includes subsequent fabrication of organic electronic devices on the substrate.

Abstract: A method for the fabrication of organic electronic devices includes forming a fluoropolymer layer over a first area of a substrate and a first set of organic electronic devices. The first set of organic electronic devices are pre-fabricated on a second area of the substrate. The method further includes selectively removing the formed fluoropolymer layer from areas within the first area of the substrate by using a liquid solvent. The method further includes subsequent fabrication of organic electronic devices on the substrate.