43results about How to "Energy level matching" patented technology

The invention discloses a seven-membered condensed ring-like benzotriazole acceptor small molecule, a preparation method and an application thereof. The compound is an n-type non-fullerene acceptor material (BIC) with a seven-membered condensed ring benzotriazole (B) with an alkyl chain as the intermediate core and a cyano group as an electron-withdrawing unit. Its preparation method is to use 4,7-dibromo-5,6-dinitrobenzotriazole compounds as raw materials, introduce thienothiophenes with alkyl chains through stille coupling reaction successively, and then carry out ring closure, through Nucleophilic substitution introduces an alkyl chain on N, introduces an aldehyde group through Vilsmeier-Haack, and finally introduces a polar conjugated unit through the Knoevenagel reaction to obtain a BIC compound. This small molecule forms a clear conformation and good solubility. Suitable electron acceptor unit, and achieve high efficiency (PCE>13%) in solar cells, it is a class of photovoltaic materials with great potential.

The present invention develops a class of hole-transporting polymer materials based on carbazole-anthracene structure: its chemical structural formula is: wherein the value of n is 1-100; A is a unit with a π-conjugated structure, selected from one of the following units Species: R1 is one of the following groups: R2 is one of the following groups: The hole transport polymer material developed by the present invention has good stability, good solubility, high carrier mobility, Compared with the traditional hole transport material PEDOT:PSS in perovskite solar cells, the advantages of easy regulation and control of energy levels show obvious advantages, showing that it can be used in organic light-emitting diodes, organic thin-film transistors, organic solar cells, organic storage and other organic electronics fields. Potential and broad application prospects.

The invention discloses a triphenylamine polymer containing an oligoether side chain and its application in the preparation of an organic photoelectric device by a solution method. The polymer of the present invention has simple structure and is easy to synthesize. The planar triphenylamine unit obtained by triphenylamine through bridging reaction is the main chain, which is conducive to improving the hole mobility and making the polymer have higher hole transport ability, which is very good. Hole injection / transport / generation materials; the HOMO / LUMO energy level of the polymer can be adjusted, triphenylamine can be polymerized with different Ar units to obtain polymer materials with different energy levels, and the oligomeric ether side chain of the polymer makes the polymerization The polymer has good solubility in medium polar solvents containing oxygen cycloalkane, but poor solubility in strong polar solvents, so that polymers have more solvent orthogonal choices in multilayer solution processing devices. The triphenylamine polymer containing oligoether side chains of the invention is applied to the preparation of organic photoelectric devices by a solution method.

The invention provides an OLED screen used as a light source for a fingerprint identification device and an optical fingerprint identification device, the optical fingerprint identification device includes an OLED screen and an optical sensor, and the optical sensor is arranged on a light-emitting surface far away from the OLED screen On one side of the OLED screen, an opaque first electrode layer, an organic light-emitting unit, and a transparent or semi-transparent second electrode layer are arranged on the transparent substrate of the OLED screen, and a number of micropores are arranged on the opaque first electrode layer, so that The microholes are filled with a transparent insulating layer and / or covered by a transparent insulating layer; when a finger touches and presses the light-emitting surface of the OLED screen body, after the light emitted by the light-emitting area is reflected by the finger, part of the light passes through the After the microhole reaches the optical sensor to form a fingerprint identification signal. The OLED transparent screen of the present invention uses the electrode layer with a microporous structure directly as the opaque microporous layer, which saves the process, and at the same time, the present invention can effectively reduce the interference of the light emitted by the OLED screen itself on the detector , making the image clearer.

The invention discloses a source-drain electrode of a thin film transistor. The source-drain electrode is composed of a molybdenum layer and a copper layer in a sequential overlaying mode, and the copper layer is arranged on the molybdenum layer. The molybdenum layer is arranged on an active layer of the thin film transistor; the growth direction of crystal lattices of the molybdenum layer and the growth direction of crystal lattices of the copper layer are perpendicular to each other; the thickness of the molybdenum layer is 20 nm-40 nm; the thickness of the copper layer is 150 nm-250 nm. The invention further discloses a manufacturing method of the source-drain electrode, the thin film transistor comprising the source-drain electrode and a manufacturing method of the thin film transistor. The defects that in the prior art, copper electrodes are prone to being oxidized, and copper atoms diffuse toward oxide after the copper electrodes deposit on the active layer of the metal oxide are overcome, the source-drain electrode has the advantage of high conductivity, stress balance between two layers of electrodes can be achieved, the disbanding ratio of the electrodes is lowered, and the bonding strength is improved.