50results about How to "High charge transport" patented technology

The present invention relates to the field of solar cells, particularly to a multi-fused-ring conjugated macromolecule, a preparation method and applications thereof, wherein the multi-fused-ring conjugated macromolecule is one of a compound represented by the following formula (1F) and a compound represented by the following formula (1). According to the present invention, the multi-fused-ring conjugated macromolecule has advantages of strong light absorption, high charge transport performance and suitable electron energy level, and can be used as an electron donor or an electron acceptor material so as to prepare solar cells. The formulas (1F) and (1) are defined in the specification.

An organic semiconductor material is characterized by indolocarbazole derivative heteroaromatic ring as the molecule structure thereof, so that the organic semiconductor material has the properties of high heat resistance, stability and high charge transmission and processing performance. Organic light-emitting diode made of the organic semiconductor material has the advantages of high efficiency, low voltage and long service lifetime.

The invention discloses naphthalene tetracarboxylic diimide-naphtho dithiophene-containing copolymer and a preparation method as well as application thereof. The polymer is a compound which has a general formula shown in the specification, wherein R1 and R2 are selected from H, C1-C20 alkyl groups, phenyl groups or substituted phenyl groups with C1-C20 alkoxyl groups; R3 and R4 are selected form C1-C20 alkyl groups or alkoxyl groups; and n is an integer of 1-100. The naphthalene tetracarboxylic diimide-naphtho dithiophene-containing copolymer is prepared through Stille reaction with a simple reaction synthesis route and low technological requirements, and has the characteristics of high dissolubility, strong absorbency, superior charge transfer performance, capability of extending an absorption range to a near infrared region, capability of increasing utilization rate of sunlight, wide application and the like.

The invention discloses a red perovskite light-emitting diode based on mixed halogen and a preparation method thereof. The light-emitting diode sequentially comprises a transparent substrate, an anode, a hole injection layer, a hole transport layer 1, a hole transport layer 2, a perovskite light-emitting layer, an electron transport layer, an electron injection layer and a cathode, wherein the perovskite light-emitting layer is prepared by spin-coating a perovskite precursor solution; dropwise adding an anti-solvent in the spin coating process, wherein the perovskite precursor solution is prepared by dissolving cesium iodide CsI, cesium bromide CsBr, lead bromide PbBr2, lead iodide PbI2, organic ammonium bromide salt LBr and organic ammonium iodide salt LI in a polar solvent. By combininglarge-size organic cations with mixed halogens, the generation of a non-luminous active perovskite phase is inhibited, the movement of halogen ions is reduced, and the spectral stability is realized while the brightness and efficiency of the red perovskite LED are improved.

The invention discloses a preparation method of a boron-doped porous carbon material. The preparation method comprises the following steps: (1) preparing a mixed solution; (2) preparing polyamide acid(PAA)/boric acid composite film; (3) preparing polyimide (PI)/boric acid composite film; and (4) preparing the boron-doped porous carbon material. The porous carbon material can be directly used forpreparing the high-performance miniature super-capacitor. The method is fast and simple and low in cost, the prepared porous carbon material is high in specific area, adjustable in aperture distribution and good in conductivity, the porous carbon material can be directly patterned and a certain amount of boron is doped, and the porous carbon material can be used for preparing the high-performanceminiature super-capacitor.

The invention discloses a quantum dot light emitting diode and a preparation method thereof. The quantum dot light-emitting diode comprises a cathode, an anode and a quantum dot light-emitting layer arranged between the cathode and the anode, an electron transport layer is further arranged between the cathode and the quantum dot light-emitting layer, the electron transport layer is made of nano metal oxide which is cross-linked together through a chelating agent, and the chelating agent contains at least three carboxyl functional groups. According to the quantum dot light emitting diode, the nano metal oxide which is cross-linked together through the chelating agent is used as an electron transport layer material, so that the electron mobility of the quantum dot light emitting diode can beimproved, the electron hole injection rate of the quantum dot light emitting diode is balanced, and the light emitting efficiency of the quantum dot light emitting diode is further improved.

The invention relates to a method for preparing an organic photovoltaic device with a high-conductivity interface functional layer. The method comprises the following steps in sequence: (1) cleaning substrate ITO conductive glass; (2) arranging a precursor solution; (3) preparing a nickel oxide film; (4) preparing a photosensitive layer; (5) preparing an electron transport layer; (6) preparing anelectrode. The preparation method is low in cost and simple in operation, and can produce an organic photovoltaic device having beneficial characteristics such as higher charge transport performance.

The invention discloses a selenium and nitrogen co-doped biochar catalytic material as well as a preparation method and application thereof. High-toxicity selenite is reduced into low-toxicity biological nano-selenium under the biological detoxification action of bacteria (Bacillus megaterium B10 with the preservation number of CGMCC No.15753), then selenium-enriched thalli serve as a carbon source of biochar, a nitrogen source is added, and the novel selenium and nitrogen co-doped biochar catalytic material is prepared with a simple one-step carbonization method. The preparation method of theselenium and nitrogen co-doped biochar provided by the invention is simple, convenient, safe, cheap and easy to control, and can be used for large-scale production. Meanwhile, the reduction effect ofbacteria on high-valence selenium can rapidly achieve detoxification of selenite pollutants, the environment-friendly advantage is achieved, in addition, the biochar can effectively degrade refractory organic matter or pollutants by activating monopersulfate, the removal effect is good, the reaction speed is high, and the application prospect in the field of wastewater remediation is very wide.

The invention discloses a quantum dot light-emitting layer raw material preparation method and a light-emitting device applying the method, and aims to solve the problem that the photoelectric effectof a device is influenced due to unbalanced carrier injection in an existing QLED device and the like; the key points of the technical scheme are as follows: the method comprises the following steps of 1, selecting a core of a quantum dot, wherein the core comprises one or more of an II-V group compound semiconductor, an III-V group compound semiconductor, and an IV-VI group compound semiconductor; 2, determining a shell of the quantum dots needing to be generated, wherein the shell comprises one or more of ZnS, ZnSe, CdS, CdSe, CdZnS, CdZnSe or CdZnSeS; and 3, preparing the quantum dot and carrying out a nano-particle one-pot synthesis method, wherein the quantum dot light-emitting layer raw material is prepared according to the quantum dot and the nano-particle one-pot synthesis method,based on the core selected in the step 1 and the shell selected in the step 2, so that the problem that the carrier injection of the QLED device is unbalanced and the leakage current is high can be solved, and the photoelectric effect is enhanced.

The invention belongs to the field of organic semiconductor materials, and discloses a novel anthracene luminescent material, a preparation method and applications thereof; the preparation method includes the steps of: in an inert gas atmosphere, performing a bromination reaction to anthracene, 9-bromoanthracene or 9,10-dibromoanthracene as raw material with addition of a bromination agent under catalysis by metal or Lewis acid; then performing palladium-catalyzed coupling reaction to introduce substituent groups on the 2nd, 3rd, 6th, 7th, 9th and 10th or 2nd, 3rd, 6th, 7th and 9th loci of theanthracene. The luminescent material has a symmetrical functionalized molecular structure of anthracene, so that luminescent intensity, color purity and stability are improved. For the first time, through catalysis, the substituent groups are introduced onto the 2nd, 3rd, 6th, 7th, 9th and 10th or 2nd, 3rd, 6th, 7th and 9th loci of the anthracene, so that molecular planarity is damaged and [pi]-[pi] stacking is inhibited, thus improving the luminescent efficiency and quantum yield performance of the material are enhanced, controlling the luminescent range of the material, inhibiting crystallization, improving film-forming property and improving charge transmission performance.

The invention belongs to the technical field of conjugated molecular compounds, and discloses a conjugated molecular compound based on an asymmetric selenium fused heterocycle and a preparation methodthereof. The preparation method for the conjugated molecular compound based on the asymmetric selenium fused heterocycle comprises the following steps that asymmetric double nitrated fluorene servesas a raw material and is coupled with thiophene, and after closed-loop reaction and formylation are carried out, the tail end is connected to different electron-deficient units so as to form an A-D-Atype conjugated molecule. According to the conjugated molecular compound and the preparation method thereof provided by the invention, the molecular structure is novel, the synthesis steps are few, aproduct is easy to separate and purify, the solubility and the stability are relatively good, the spectral absorption range and a molecular energy level orbit are proper, and therefore the conjugatedmolecular compound and the preparation method thereof have huge application potential in organic solar cell electronic receptor materials.

The invention discloses a luminous organic semiconductor framework material as well as applications: by arranging heteroatoms, such as N, O and S, on the same end of an aromatic fused ring, the molecule is induced to generate static dipole moment; then through the intermolecular forces, such as intermolecular hydrogen bonds, dipolar-dipolar interaction and the like, the stacking microstructure ofthe molecule under aggregation state, the luminous performance of the material, emitting color of the material, and carrier transport performance of the material are regulated. The product has excellent luminescence property under aggregation state.

Provided is an organic EL element which has a low light emission ratio of a component that has a wavelength longer than the emission peak wavelength, high luminous efficiency, low driving voltage, long emission life and excellent long-term stability, while being suppressed in voltage increase during the driving. This organic EL element comprises organic layers that are sandwiched between a positive electrode and a negative electrode; and at least one of the organic layers contains a compound that has a structure represented by general formula (1). (In general formula (1), R represents an alkylgroup, a halogen atom, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyl group, a sulfinyl group, a sulfonyl group, a nitro group, a cyano group, a hydroxy group or amercapto group; Ar represents an aromatic hydrocarbon group or an aromatic heterocyclic group; X1-L1-X2 represents a bidentate ligand; and two adjacent moieties among R1-R4 moieties represent groups represented by one of general formulae (2)-(4).) (In general formulae (2)-(4), each of Y1-Y4 moieties represents O, S or N-R'; each of Y5 and Y6 moieties represents CR'' or N; and each of Z1-Z8 moieties represents C-Rx or N.) AA General formula

The invention discloses a highly-soluble high-performance semiconductor conjugated polymer and a synthetic method thereof. By introducing length-adjustable long straight hybrid siloxy group chain as aside chain, a series of highly-soluble high-performance bioxindol conjugated polymers are obtained. The synthesized novel high-performance semiconductor conjugated polymer can be used as a hole charge transfer material and applied to organic field-effect transistors. The semiconductor conjugated polymer of the invention has great solubility, and can be dissolved in solvents such as chloroform, toluene, hexane and ethyl acetate, etc. The invention is of great guiding significance for designing and synthesizing the high-performance semiconductor conjugated polymer for non-chlorine solvent processing.

The invention provides a silicon-based laminated solar cell with a microstructure. The silicon-based laminated solar cell comprises a bottom cell structure and a top cell structure laminated on the bottom cell structure, the bottom cell structure comprises an n-type monocrystalline silicon substrate, and the periphery of the upper surface of the n-type monocrystalline silicon substrate is equippedwith a SiO2 insulating layer. A nanometer truncated cone hole periodic array structure is prepared through middle etching, a p-type doping layer is formed, an Ag thin film reflecting layer is prepared on the inner wall of the nanometer truncated cone hole, and a metal thin film layer is arranged on the lower surface of the n-type monocrystalline silicon substrate; the top cell structure sequentially comprises a TiO2 thin film layer, a perovskite absorption layer, a hole transport layer, a transparent conductive thin film layer and a metal electrode from bottom to top. The invention further discloses a preparation method of the cell. According to the invention, the excellent light capturing capability of the nanometer truncated cone hole periodic array is utilized, and the TiO2 is used forfilling the silicon hole array to improve the collection efficiency of carriers, so that the photon absorption efficiency is improved, and the photocurrent density is also improved.

The invention provides a lead sulfide quantum dot solar cell and a preparation method thereof. The preparation method comprises the following steps: S1, preparing an electron transport layer on a conductive glass substrate; S2, preparing a quantum dot light absorption layer on the electron transport layer by adopting a one-step spin-coating method; S3, preparing a hole transport layer on the quantum dot light absorption layer by adopting a spin-coating method; and S4, depositing a metal electrode on the hole transport layer by adopting an evaporation method, and preparing the light absorption layer of the quantum dot solar cell by adopting a one-step method so as to obtain the high-performance lead sulfide quantum dot solar cell.