A composition for forming a light-emitting device, a method of manufacturing a light-emitting device utilizing the composition, and a light-emitting device manufactured utilizing the composition are provided. The composition includes two or more solvents and a boiling point of a first solvent having the highest boiling point among the two or more solvents is greater than 300° C.

A method for transferring an assembly of oriented nanowires from a fluid to a substrate surface, comprising: providing (FIG. 2A) a fluid to a container, said fluid comprising a first liquid (11), a second liquid (12) and a plurality of nanowires (25), wherein the first and second liquids phase separate into a sub phase, a top phase, and an interface (13) between the sub phase and the top phase; wherein the nanowires are functionalized to align vertically into a nanowire aggregate at the interface; wherein the fluid is provided with a substance in a composition configured to change the composition of the top phase or the composition of the sub phase to counteract bulging of the interface (FIG. 2B); and bringing the nanowire aggregate into contact with a substrate surface such that a majority of the nanowires are aligned with respect to each other on the substrate.

A light emitting device includes a first electrode, a second electrode, and an emissive layer between the first and second electrodes. The emissive layer comprises quantum dots that are capable of producing circularly polarized luminescence. The quantum dots are chiral structured perovskite quantum dots, each comprising a core having a chiral crystal structure.

An ink composition for forming an electron transport layer of a light-emitting device of a display device includes: an electron-transporting compound including a phosphine oxide moiety; and a solvent represented by Formula 1,

(P═O)(OR.sub.1)(OR.sub.2)(OR.sub.3)  Formula 1

wherein, in Formula 1, R.sub.1 to R.sub.3 each, independently from one another, are hydrogen, deuterium, or a C.sub.1-C.sub.30 alkyl group, and at least one of R.sub.1 to R.sub.3 is a C.sub.1-C.sub.30 alkyl group.

The present disclosure relates to an inkjet printing ink and application thereof. In one aspect, the inkjet printing ink includes a crosslinking type organic host material, an organic doped luminescent material, a surface tension modifier, a viscosity modifier, and a solvent. On the other aspect, the present disclosure provides printing the inkjet printing ink on a substrate of a display panel to be prepared, performing drying process, and performing baking process at 120° C. to form an organic light emitting layer. Therefore, avoiding the problem of mutual dissolution of the organic light emitting layer and the electron transport layer when the electron transport layer is printed on the organic light emitting layer, avoiding damage to the organic light emitting layer, realize an inkjet printing process of the organic electron transport layer, thereby reducing the cost of manufacturing.

A light-emitting device and a manufacturing method thereof are disclosed. The manufacturing method of the light-emitting device includes: forming a function layer that has a first surface; performing plasma treatment on the first surface of the function layer; and forming a perovskite-type light-emitting layer on the first surface treated by the plasma treatment.

A light emitting device including a first electrode and a second electrode, and an emission layer disposed between the first electrode and the second electrode and including quantum dots, a first charge auxiliary layer disposed between the emission layer and the first electrode, and a second charge auxiliary layer disposed between the emission layer and the second electrode, wherein the emission layer comprises a first emission layer contacting the first charge auxiliary layer, a second emission layer disposed on the first emission layer, and a third emission layer disposed on the second emission layer. The hole mobility of the first emission layer decreases sequentially from the first emission layer to the third emission layer.

A charge-transfer salt formed from a material comprising a repeat unit of formula (I) and an n-dopant: wherein BG is a backbone group of the repeat unit; R.sup.1 is a ionic substituent comprising at least one cationic or anionic group; n is at least 1; R.sup.2 is a non-ionic substituent; and m is 0 or a positive integer; the material further comprising a counterion balancing the charge of the cationic or anionic group. ##STR00001##

The present invention discloses a polymer-metal compound composite ink, a preparation method and application thereof. The composite ink comprises: at least one polymer; at least one metal compound material, the metal compound material being selected from polyoxometalate compounds and nanocrystalline metal oxides; at least one solvent which is used for forming a disperse system in the form of a uniform fluid together with the remaining components in the composite ink. The present invention also discloses a method for preparing the composite ink. The composite ink of the present invention is easily available in raw material, easy to prepare and low in cost, and can be manufactured into a composite thin film by spin-coating, printing or in other ways. The composite thin film, as an electrode modification layer, can be applied to photoelectric devices such as solar cells or light-emitting diodes, so as to improve the contact performance between an electrode and an organic active layer and thus enhance the performance and yield of photoelectric devices.

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 C.sub.1-6 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.