379 results about "Organic solar cell" patented technology

The invention discloses a self-assembled monomolecular layer material with an asymmetric intermediate core and a preparation method and application thereof, and belongs to the field of solar cells. The self-assembled monomolecular layer material is formed by combining an asymmetric intermediate core with anchoring groups such as phosphonic acid and sulfonic acid, has good hydrophobicity and high light transmittance, can be used as a hole transport layer material, and is used for preparing organic solar cells and perovskite solar cells with p-i-n structures, the organic solar cell achieves the maximum energy conversion efficiency of 18.9%, shows excellent environmental stability, still keeps 95% or above of the initial performance after being stored in air for 480 h, and is far superior to a traditional device based on a PEDOT: PSS interface layer. By designing and developing a series of self-assembled monomolecular layer materials with asymmetric intermediate cores, the energy conversion efficiency and environmental stability of the solar cell can be remarkably improved.

The invention relates to the technical field of organic photoelectric materials, in particular to an acceptor material containing a cyclohexyl side chain, the structural formula of the acceptor material containing the cyclohexyl side chain is one of Y-C1 or Y-C2, and the acceptor material containing the cyclohexyl side chain is # imgabs0. On the basis of a traditional A-D-A structure with a Y series analogue as a core, a large-volume steric hindrance side chain is introduced, and a large-volume cyclohexyl group is introduced into the side chain, so that the acceptor material containing the cyclohexyl side chain is obtained. The organic small molecule acceptor material has the advantages that the steric effect is increased, the intramolecular and intermolecular interaction is adjusted, the polarizability of molecules is enhanced, the intermolecular electron orbital overlapping is promoted, the delocalization of charge transfer pathways is promoted, the energy loss is further reduced, and the efficiency is improved; the material has excellent charge transfer characteristic and good intermolecular accumulation effect, is beneficial to the improvement of charge mobility, and has better photovoltaic performance in the test of a ternary organic solar cell.

The invention discloses a double-sided flexible solar cell and a preparation method thereof. The solar cell sequentially comprises a flexible semitransparent photovoltaic cell, a curved surface reflector and a flexible photovoltaic cell from top to bottom, wherein the flexible semitransparent photovoltaic cell sequentially comprises a packaging layer, a second transparent electrode, an electron transport layer, a light absorption layer, a hole transport layer and a first transparent electrode from top to bottom; the curved-surface reflecting mirror comprises a curved-surface substrate, a high-reflectivity metal layer and a weather-resistant protective layer from top to bottom in sequence. The flexible photovoltaic cell is one of a perovskite solar cell, an organic solar cell, a CIGS solar cell, a dye-sensitized solar cell, a monocrystalline silicon solar cell, an amorphous silicon solar cell, a cadmium telluride thin film solar cell and a quantum dot solar cell. The double-sided flexible solar cell provided by the invention can solve a series of problems that a traditional flexible solar cell is low in solar spectrum utilization rate, insufficient in photovoltaic and photo-thermal system collaboration, poor in complex curved surface adaptability and the like.

The invention relates to the technical field of preparation of organic solar cells, in particular to an organic solar cell based on a halogenated additive, and the structure level of a forward device of the solar cell sequentially comprises a transparent conductive substrate, a hole transport layer, an organic active layer, an electron transport layer and a metal electrode from bottom to top, the organic active layer comprises a polymer donor PM6, a non-fullerene electron acceptor L8-BO and a halogenated additive DFBB. Through addition of a halogenated additive DFBB, strong non-covalent bonding is formed by unique sigma-hole interaction of the halogenated additive DFBB and a receptor L8-BO, and meanwhile, the molecular stacking orientation of the active layer can be accurately regulated and controlled by the polymer electrostatic potential extreme value of the halogenated additive DFBB. The halogenated additive DFBB preferentially generates strong sigma-hole interaction with acceptor molecules, ordered accumulation of L8-BO is remarkably enhanced, meanwhile, the crystallization behavior of the donor PM6 is balanced through the synergistic halogen effect, a bicontinuous interpenetrating network structure is formed, and the photo-generated exciton yield is improved.

The invention provides a boron-containing organic compound and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. According to the boron-containing organic compound as shown in the formula 1, a spiro structure is added on a classic boron-nitrogen parent nucleus, and arylamine / carbazole groups are introduced on the spiro structure, so that steric hindrance is increased, molecular vibration is reduced, and pi-pi accumulation interaction among planar boron-containing / nitride molecules is effectively inhibited. The boron-containing organic compound as shown in the formula 1 is applied to the organic electroluminescent device as a doping material, not only can the spectrum be narrowed and the color purity be improved, but also the quenching caused by aggregation can be overcome, the luminous efficiency of the organic electroluminescent device is improved, and the service life of the organic electroluminescent device is prolonged. The material can be applied to the fields of information display, illumination, organic solar cells and the like, and has a very good market prospect.

The invention discloses an ultra-narrow band gap electron acceptor which is represented by a formula (I) and takes a phenazine structure as a core, a preparation method of the electron acceptor and application of the electron acceptor in an organic solar cell. The phenazine derivative ultra-narrow band gap receptor provided by the invention has an extremely low film optical band gap (-1.2 eV). The organic solar cell prepared by matching with a narrow-band gap polymer donor PTB7-Th as an active layer has high energy conversion efficiency and short-circuit current. In addition, the transparent organic solar cell prepared from the active layer obtains higher energy conversion efficiency on the premise of maintaining higher average visible light transmittance. The phenazine derivative ultra-narrow band gap receptor prepared by the invention has a huge application prospect in the field of transparent organic solar cells. # imgabs0 #

The invention relates to a dimer non-fullerene acceptor molecule based on a pyrone-ring lock structure, preparation of the dimer non-fullerene acceptor molecule and application of the dimer non-fullerene acceptor molecule as an acceptor photovoltaic material, and belongs to the technical field of organic solar cell materials. An A-D-A '-D-A type dimer non-fullerene acceptor molecule is designed and synthesized based on a pyrone structure, A is an electron withdrawing unit, D is an electron donating unit, and A' is an electron withdrawing unit based on the pyrone structure. The dimer molecule has a structural general formula I shown in the specification. Wherein EG is selected from conjugated groups with electron withdrawing capability, Ar is selected from conjugated groups with electron donating capability, and X is selected from hydrogen atoms or halogen. The dimer acceptor molecule shows a small dihedral angle, which is beneficial to accumulation between molecules, so that the material has high carrier mobility. The dimer acceptor molecule with the pyrone structure shows obviously improved stability under illumination and attack of a nucleophilic reagent, and the organic solar cell device shows good photoelectric conversion efficiency.

The invention relates to the technical field of organic photoelectric materials, and particularly discloses a non-condensed ring small molecule acceptor material based on a quinonoid structure as well as a preparation method and application of the non-condensed ring small molecule acceptor material. According to the invention, easily available 1, 4-diacetyl piperazine-2, 5-diketone is used as a center, an alkyl chain and Ar are used for modification, EG is used as an end group, the non-condensed ring A-D-A '-D-A type structure acceptor material based on a quinone structure is constructed, and the general formula is shown in the specification. Wherein the PCE of the acceptor material which is modified by bithiophene and takes 2-(3-ethyl-4-oxothiazolidine-2-subunit) malononitrile as a terminal group reaches 15%. The non-condensed ring small molecule acceptor material based on the quinonoid structure is simple in synthesis process, and an effective strategy is provided for solving the problem of the overall performance of an organic solar cell.

[Problem] To improve the efficiency of converting light incident to an organic solar cell into electric power. [Solution] An electrode film 30 is used in the production of an organic solar cell 10. The electrode film 30 includes: a support 31; an electrode 40 supported by the support 31; and a stress relaxation layer 32 disposed between the support 31 and the electrode 40.

The invention relates to the field of solar cells and electrochromism, in particular to electrochromic glass integrated with a semitransparent organic solar cell and a preparation method of the electrochromic glass. The electrochromism glass comprises an electrochromism layer and an organic solar cell layer stacked on the electrochromism layer, and the organic solar cell layer supplies power to the electrochromism layer; the electrochromic glass is further provided with a control circuit, and the control circuit can change the electrode connection mode of the cathode and the anode of the organic solar cell layer and the electrochromic layer so as to regulate and control the current direction in the electrochromic layer to achieve coloring or color fading. The electrochromic glass can realize self-energization, can regulate and control transparency according to illumination intensity, and has good photoelectric conversion performance and heat insulation performance.

The invention discloses an organic solar cell and a preparation method thereof, and relates to the technical field of cells. The method comprises the following steps: spin-coating an anode interface modification layer solution on a conductive substrate to form an anode interface modification layer; spin-coating the photosensitive active layer solution on the anode interface modification layer to form a photosensitive active layer; the first solvent is preheated so that the first solvent can generate steam, and the boiling point of the first solvent is higher than 120 DEG C; placing the photosensitive active layer in a normal temperature state and the heated first solvent in the same closed environment to enable steam generated by the first solvent to dissolve a material in the photosensitive active layer so as to form a photosensitive active layer with a phase separation nanostructure; spin-coating the photosensitive active layer with the cathode interface modification layer solution to form a cathode interface modification layer; and forming a metal electrode on the surface of the cathode interface modification layer. The invention aims to solve the problem that the efficiency of the organic solar cell is reduced due to excessive phase separation of the photosensitive active layer.

The invention relates to the technical field of solar cells, in particular to a self-assembly transport layer solution, a non-fullerene organic solar cell and a preparation method of the non-fullerene organic solar cell, the self-assembly transport layer solution comprises a solute, a solvent and a solvent additive, the solute is [4-(3, 6-diphenyl-9H-carbazole-9-yl) butyl] phosphoric acid (Ph-4PACz), the solvent is ethanol, the solvent additive is dibutyl ether (DBtE), and the concentration of the self-assembly transmission layer solution is 0.3 mg / mL. When the solution is coated on the surface of an electrode (such as an ITO (Indium Tin Oxide) electrode or other suitable electrode materials), Ph-4PACz molecules can form an ordered monomolecular layer. These molecular layers contribute to optimizing charge injection, in particular hole injection, thereby functioning as a hole transport layer (HTL) in organic solar cells. The solution method is simple in preparation and has greater potential in the aspect of large-scale preparation.

The embodiment of the invention provides a non-fused ring electron acceptor containing an asymmetric side chain and a preparation method and application thereof, the non-fused ring electron acceptor containing the asymmetric side chain has the following structure: # imgabs0 #, R1, R2 and R3 comprise any one of branched chain type, straight chain type or cyclic alkyl containing 1-20 carbon atoms, and A is a strong electron withdrawing functional group. According to the non-fused ring electron acceptor containing the asymmetric side chain and the preparation method and application thereof provided by the embodiment of the invention, the aryl alkylamine asymmetric structure is introduced as the side chain, so that the molecular planarity of the non-fused ring electron acceptor can be maintained, and the molecular accumulation and solubility can be conveniently regulated and controlled. Therefore, the non-fused ring electron acceptor has the advantages of good solubility, strong crystallization, high mobility, good compatibility and easiness in processing into a film; when the electron acceptor material is used for preparing an organic solar cell, the photoelectric conversion efficiency of the device can reach 16%.

The invention provides a triarylamine compound and an organic light-emitting device thereof, and relates to the technical field of organic photoelectric materials. According to the compound, triarylamine serves as a center, fluorene derivative groups and aza-naphthalene groups are connected, the compound is applied to a light-emitting device to serve as a hole transport layer material, the light-emitting efficiency of the organic light-emitting device can be greatly improved, and the service life of the organic light-emitting device can be greatly prolonged; meanwhile, the triarylamine compound is used as a covering layer material to be applied to the organic light-emitting device, and the light-emitting efficiency of the device can be effectively improved. In addition, the compound has good physical and thermal stability, and the service life of the device can be prolonged. The compound can be widely applied to the fields of organic photovoltaic devices, organic light-emitting devices, organic solar cells, electronic paper, organic photoreceptors, organic thin film transistors, monochromatic or white lighting elements and the like.

The invention belongs to the technical field of organic photoelectricity, and particularly relates to a polymer material containing a dithiazolobenzothiophene structural unit and application of the polymer material in an organic solar cell. The polymer material has a molecular structure as shown in formula (I), and substituent groups are described in the specification. According to the invention, a dithiazolobenzothiophene unit is used as an electron withdrawing unit to be introduced into the polymer to construct a broad-band gap donor material, and the polymer material has good crystallinity and donor-acceptor compatibility at the same time, and can obtain relatively high carrier mobility and photovoltaic performance; when the material is applied to organic solar cells, the energy conversion efficiency (PCE) can exceed 19%, and the material has a good application prospect. # imgabs0 #

The invention provides an oligomeric micromolecule donor compound as well as a preparation method and application thereof. The oligomeric small molecule donor compound belongs to a brand-new long conjugate organic small molecule donor material containing a connecting unit, two or more efficient organic small molecule donors are combined into a whole, the conjugate length is prolonged, and a series of novel oligomeric small molecule donor materials are synthesized. The oligomeric small molecule donor compound disclosed by the invention has good batch repeatability and relatively good film-forming property; the oligomeric small molecule donor compound prolongs the conjugate length, has excellent ultraviolet-visible light absorption performance, has strong interaction and aggregation among molecules, can realize good phase separation from a non-fullerene receptor, has a proper electron energy level, and is suitable for being used as an electron donor material in an organic solar cell.

The invention discloses an organic solar cell screening method, system and device based on multi-scale simulation, and belongs to the technical field of solar cells. The method comprises the following steps: firstly, analyzing the electronic structure characteristics of an acceptor material, and obtaining the microstructure of a blending system through molecular dynamics simulation; then, interface contact molecule pairs are extracted and subjected to clustering analysis, and comprehensive evaluation parameters are calculated in combination with the accumulation proportion and the charge transfer capacity coefficient; and finally, synthesizing the electronic structure, value and interface interaction to screen the material. According to the method, an evaluation system from molecular intrinsic properties to microtopography to macroscopic properties is established, the energy level asynchronous decline law and multichannel electron transmission characteristics are used as screening standards, the limitation of single-scale simulation is effectively overcome, and accurate prediction and efficient screening of photoelectric properties of organic solar cell materials are achieved.

The invention discloses a method for processing and preparing a hole transport layer of an organic solar cell, and relates to the technical field of solar cells, and the method comprises the following steps: S1, preparing a nickel oxide hole transport layer film, and cleaning the nickel oxide film with deionized water; s2, preparing a to-be-adjusted liquid, and measuring the initial pH value of the to-be-adjusted liquid; s3, calculating the volume of the required sodium hydroxide aqueous solution, and adding a proper amount of the sodium hydroxide aqueous solution into the to-be-adjusted liquid in the step S2 to adjust the pH value of the solution to a proper range; s4, uniformly spreading the solution in the step S3 on the surface of the cleaned nickel oxide hole transport layer thin film, and soaking for 1-15 minutes to ensure sufficient reaction; s5, the nickel oxide hole transport layer thin film is washed with deionized water, redundant sodium hydroxide aqueous solution is removed, then the washed thin film is dried, and aftertreatment is completed; according to the invention, the problem of disordered arrangement of the ionic liquid at the interface is solved, and the performance and stability of the perovskite device are improved.

The invention relates to the technical field of organic solar cells, and discloses a sputtering electrode-based all-wet inversion organic solar cell and a preparation method thereof, and the preparation method comprises the steps: carrying out the pretreatment of a substrate and a transparent conductive electrode composite layer; preparing an electron transport layer dispersion liquid, coating the transparent conductive electrode layer with the electron transport layer dispersion liquid by a wet method, and annealing to obtain a wet electron transport layer; preparing an active layer solution, coating the wet electron transport layer with the active layer solution, and annealing to obtain a wet active layer; preparing a hole transport layer solution which comprises a metal oxygen cluster and a silane coupling agent, coating the hole transport layer solution on the wet active layer through a wet coating method, and annealing to obtain a wet hole transport layer; and preparing a conductive electrode layer on the wet hole transport layer through magnetron sputtering. According to the wet hole transport layer in the scheme, through interaction of the metal oxygen cluster and the silane coupling agent, the formed interface layer can effectively resist high-energy ion bombardment in the electrode sputtering process, the functional layer below is protected from being damaged, and the efficiency and stability of the battery are remarkably improved.

The invention provides a boron-containing organic compound and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. According to the boron-containing organic compound, a spiro structure is added on a classic boron-nitrogen parent nucleus, large steric hindrance is brought to molecules, on one hand, vibration of the molecules is reduced, so that a spectrum is narrowed, and the color purity of light is improved; on the other hand, the distance between molecules is increased, the acting force between the molecules is weakened, quenching caused by aggregation is overcome, the luminous efficiency of the organic light-emitting device is improved, and the service life of the organic light-emitting device is prolonged. The method can be applied to the fields of information display, illumination, organic solar cells and the like.

The invention relates to a thienylethene polymer, the thienylethene polymer has a chemical structure as follows: R1 and R2 are respectively and independently selected from hydrogen, substituted or unsubstituted C6 to C20 straight chain or branched chain alkyl, alkoxy or alkylthio, and R1 and R2 are respectively and independently selected from hydrogen, substituted or unsubstituted C6 to C20 straight chain or branched chain alkyl, alkoxy or alkylthio; x1, X2 and X3 are independently selected from a chlorine atom or a fluorine atom; and n represents the degree of polymerization and is a natural number between 2 and 1000. Compared with the existing thienylethene polymer with the same main chain, the improved thienylethene polymer disclosed by the invention can effectively improve the photoelectric conversion efficiency and open-circuit voltage of a photovoltaic device.

The invention discloses a benzotriazole light conversion material, a preparation method and application of the benzotriazole light conversion material in preparation of a solar cell packaging film. When a light conversion packaging film formed based on the benzotriazole light conversion material is attached to an organic solar cell, a dye-sensitized solar cell, a crystalline silicon solar cell, a perovskite solar cell and a laminated cell composed of the perovskite cell and the crystalline silicon cell, the ultraviolet stability of the solar cell can be improved; and the power conversion efficiency of the solar cell can be maintained.

The present application relates to a kind of organic solar cell module and its preparation method.The organic solar cell module, in addition to deposit a conductive layer (1A,1B) on the first electrode layer, etching connection channel (P2) and partition channel (P3) on the conductive layer.Compared with prior art, the significant advantages of the present application are: when laser etching connection channel (P2) and partition channel (P3), it improves the fault tolerance of etching, both protects the first electrode layer, and makes each layer be etched completely, improves the performance of device.

The invention discloses an acceptor material containing a part of fluorinated side chain aza fused ring as well as a preparation method and application of the acceptor material. The structural general formula of the acceptor material containing the part of fluorinated side chain aza fused ring is as shown in formula I, wherein R1 and R2 are selected from C1-C30 part of fluorinated alkyl; and EG1 and EG2 are any one of cyano indanone compounds. The preparation method comprises the following steps: carrying out Schpeller coupling reaction on a compound 1 and a compound 2 to obtain a coupling compound 3; the compound 3 and alkylamine R2NH2 are subjected to a Buchwald-Hartwig ring closing reaction, and a fused ring compound 4 is obtained; the compound 4 is subjected to a vilchmidt-hauck hydroformylation reaction to obtain a compound 5; the compound 5 and a terminal group EG are subjected to a Knoevenagel condensation reaction to obtain a final acceptor material. The acceptor material with the near-infrared absorption function is prepared, the spectrum capture range of an organic solar cell is widened, and the performance of a laminated device and a semitransparent device can be improved. Formula I.

To provide an organic solar cell module.SOLUTION: Provided is an organic solar cell module 10, in which a plurality of unit cells A each have a first electrode 1 and a second electrode 2, each of which is light-transmitting and arranged opposed to each other in a Z direction, and a power generation laminate 7 which has a lamination structure including an electron transport layer 3 and a hole transport layer 4 aligned in the Z direction, and an organic power generation layer 5 located therebetween, and in which one of the electron transport layer 3 and the hole transport layer 4 is arranged opposed to the first electrode 1 and the other is arranged opposed to the second electrode 2, and the plurality of unit cells A each have, between a first base material 11 and a second base material 12 each of which is light-transmitting and opposed to each other in the z direction, a module structure which is opposed to the first base material 11 and the first electrode 1, and is arranged spaced apart so as to be aligned in the in-plane direction of the XY plane. Between two adjacent unit cells A among the plurality of unit cells A, a connection wiring 6 is provided that connects the first electrodes 1 of unit cells A1 and A2 to the second electrodes 2 of the unit cell A2 and a unit cell A3, and the connection wiring 6 and the second electrode 2 are integrally formed of carbon nanotubes.SELECTED DRAWING: Figure 1

The invention discloses a synthesis method and application of a non-condensed ring electron acceptor, which are different from a traditional condensed ring structure or a single alkyl chain side chain, and a dichlorobenzene unit is introduced as a conformation regulating group. As chlorine atoms have strong electronegativity and proper atomic radius, remarkable non-covalent interaction such as Cl-S and Cl-pi can be generated among molecules. The interaction is similar to a set of precise molecular guide rails, molecules are guided to perform highly ordered pi-pi accumulation, so that electron cloud overlapping is remarkably enhanced, and an efficient electron transmission channel is constructed. According to the organic solar cell prepared based on the non-condensed ring electron acceptor material designed by the invention, the electron mobility is remarkably improved, and meanwhile, the charge recombination loss of a device is effectively reduced.

Provided is a solar cell utilizing trivalent metal doping and a method for manufacturing an inverted-structure organic solar cell (OSC), the method including: preparing a TiO2 precursor solution using titanium (IV) butoxide (Ti(OCH2CH2CH2CH2CH3)4); dissolving and stirring the TiO2 precursor solution in a mixture of 2-methoxyethanol (CH3OCH2CH2OH) and acetylacetone (CH3COCH2COCH3); dissolving Ga(NO3)3·xH2O or In(NO3)3·xH2O in the TiO2 precursor solution to prepare a doped TiO2 precursor solution. According to the method, it is possible to manufacture an inverted-structure OSC with improved power conversion efficiency (PCE) compared to conventional inverted-structure OSCs.

The present invention provides an organic conjugated small molecule material with a cyanoindenone end group and its application, belonging to the technical field of organic solar cells. The organic conjugated small molecule material provided by the present invention has a structural formula shown in Formula Ι. The end group of the organic conjugated small molecule material provided by the present invention has a larger conjugated area and aggregation characteristics, which is beneficial to the self-assembly and stacking between molecules, thereby improving the photovoltaic performance of this type of small molecule material; moreover, this type of small molecule material has appropriate energy levels and is suitable as an electron acceptor material for use in organic solar cell devices; when this type of material is used as the acceptor material of an organic solar cell, it has a high energy conversion efficiency, which is of great significance for the development of the organic solar cell field.

The present invention discloses a method for reducing the roughness of a gravure silver wire electrode and its application. The method for reducing the roughness of a gravure silver wire electrode comprises: manufacturing a silver wire electrode by gravure printing, wherein the silver wire electrode comprises a silver nanowire network structure; coating a fluid containing a functional material on the surface of the silver wire electrode, and at least allowing the functional material to fill the concave area on the surface of the silver wire electrode, thereby reducing the surface roughness (RMS) of the silver wire electrode to less than 5nm. The present invention can effectively reduce the surface roughness of the gravure printed silver wire electrode, so that the silver wire electrode can be directly patterned and mass-produced by the gravure printing method, and can well meet the requirements for preparing high-performance flexible organic solar cells, which is conducive to the subsequent integration of the entire preparation process of the flexible organic solar cell, and realizes the efficient, high-quality and low-cost production of the flexible organic solar cell.

The invention belongs to the technical field of organic solar cell materials, and relates to a benzodithiophene polymer donor with a simple and stable structure and a preparation method and application thereof. The invention discloses a benzodithiophene polymer donor PBTQ-X (F / Cl / 2F) with a simple and stable structure, and discloses a preparation method of the benzodithiophene polymer donor PBTQ-X (F / Cl / 2F), and the preparation method comprises the following steps: under the action of a Stille coupling catalyst, carrying out two-stage polymerization on benzodithiophene containing bis (trimethyltin) and a quinoxaline derivative containing a dibromothiophene pi bridge, carrying out two-stage heating reflux reaction, and carrying out post-treatment to obtain the benzodithiophene polymer donor PBTQ-X (F / Cl / 2F). Adding an end-capping reagent for end capping; and finally, settling after passing through methanol, thereby obtaining the product. The benzodithiophene polymer donor with a simple and stable structure can be applied to an active layer of an organic solar cell device, and shows relatively good photovoltaic performance and long-term stability.