The present disclosure relates to a stretchable organic light-emitting diode and a manufacturing method thereof, the stretchable organic light-emitting diode including: a stretchable driving unit including a stretchable field effect transistor (FET); and a stretchable light-emitting unit including an elastic material on the stretchable driving unit.

Disclosed herein are light emitting device that emit highly circularly polarized light. These devices may be used to form a dot-matrix display or an electronic information display comprised of a series of photopolymerizable, chiral liquid crystalline layers that can be solvent cast on a substrate. The mixture of chiral materials in each successive layer may be blended in such a way that each layer has the same chiral pitch and may also be blended so that the ordinary and extraordinary refractive indices in each layer match the other layers such that the complete assembly of layers will optically function as a single relatively thick layer or chiral liquid crystal. The chiral nematic material in each layer can spontaneously adopt a helical structure with a helical pitch. Further disclosed are pixel structures that not only emit light with brightness and chromaticity information, but also depth of focus information as well.

A barrier film laminate (1) comprising an organic layer (4) that is situated in between two inorganic layers (2,3). The organic layer comprises submicron getter particles (5) at an amount between 0.01 and 0.9% by weight. The barrier film laminate can be used for encapsulating organic electronic devices such as OLEDs. The long term homogenous transparency makes this laminate in particular suited for protecting the light emitting side of an OLED.

In one aspect, window inserts are described herein, which can modulate transmission of electromagnetic radiation through a window and can be self-powered. In some embodiments, a window insert comprises a photovoltaic device, the photovoltaic device including a photosensitive layer having peak absorption between 250 nm and 450 nm and an average transmittance of at least 50 percent in the visible region of the electromagnetic spectrum.

Methods for attaching a reducible nanomaterial to an organic polymer are described herein. A method includes subjecting a reaction mixture that includes the reducible nanomaterial and the organic polymer to a reducing agent under reaction conditions sufficient to reduce the nanomaterial, activate the organic polymer, and attach the reduced nanomaterial to the organic polymer during the reaction.

The present disclosure provides a novel material for an organic light emitting device, and an organic light emitting device using same, the novel material being usable both in an organic light emitting device and in a solution process. The present disclosure also provides an organic light emitting device comprising a polymer containing a repeating unit represented by the following Chemical Formula 1, and an ionic compound containing an anionic group represented by the following Chemical Formula 2 in a hole transporting layer:

##STR00001##

wherein all the variables are described herein.

A compound having the structure of Formula I ##STR00001##
is disclosed. In the structure of Formula I, each of R.sub.1, R.sub.2, and R.sub.3 is independently a hydrogen, a non-fused aryl group having one meta-substituent, or a non-fused heteroaryl six-membered ring having one or more meta-substituents; each meta-substituent is a non-fused aryl or non-fused heteroaryl six-membered ring optionally substituted with further substituents selected from the group consisting of non-fused aryl groups, non-fused heteroaryl groups, and alkyl groups; and at least one of R.sub.1, R.sub.2, and R.sub.3 is a non-fused aryl having one meta-substituent or a heteroaryl six-membered ring having at least one meta-substituent, wherein each meta-substituent is a non-fused aryl or non-fused heteroaryl group further substituted with a chain of at least two non-fused aryl or non-fused heteroaryl groups. The compounds may be useful in phosphorescent organic light emitting devices.

Provided are a copolymer having plural repeating units each having a specific structure, and having a weight-average molecular weight of from 100,000 to 3,000,000; a material for organic electronic devices and a material for organic electroluminescent devices containing the copolymer; a solution containing the copolymer and a solvent; and an organic electroluminescent device using the material for organic electroluminescent devices. The copolymer has not only charge transporting properties but also solubility and is suitable for forming a film according to a coating method. The present invention provides the copolymer, and a material for organic electronic devices and a material for organic electroluminescent devices containing the copolymer, an organic electroluminescent device, and a solution containing the copolymer.

Disclosed are a polymer, and a mixture or a formulation and an organic electronic device containing same, and applications thereof, and further a monomer of which the polymer is made; the polymer comprises on its side chain a repeating structure unit E, characterizing in that its (S1(E)−T1(E))≦0.35 eV or even less, which may allow the said polymer having thermally activated delayed fluorescence (TADF) property. Thus a TADF polymer suitable for printing processes is provided, thereby reducing OLED manufacturing costs.

Provided are perovskite nanocrystalline particle and an optoelectronic device using the same. The perovskite nanocrystalline particle may include a perovskite nanocrystalline structure while being dispersible in an organic solvent. Accordingly, the perovskite nanocrystalline particle in accordance with the present invention has therein a perovskite nanocrystal having a crystalline structure in which FCC and BCC are combined; forms a lamellar structure in which an organic plane and an inorganic plane are alternately stacked; and can show high color purity since excitons are confined to the inorganic plane. In addition, the perovskite nanocrystalline particle have a particle size greater than or equal to a Bohr diameter beyond a quantum confinement effect, and simultaneously can implement high emission efficiency and emission wavelength which is almost not dependent on particle size. Furthermore, the perovskite nanocrystalline particle in accordance with the present invention, as a nanoparticle which is dispersible in an organic solvent, is applicable in various electronic devices such as light emitting devices, lasers, solar cells, etc.