205 results about "Organic solar cell" patented technology

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 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.

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 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 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.

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.

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.

This invention relates to the field of solar cell technology, and in particular to a self-assembled monolayer based on a fluorinated alcohol solvent, its preparation method, and a solar cell. The method involves adding a fluorinated alcohol as a co-solvent to a solution of the self-assembled monolayer material, which is then deposited onto the surface of a metal oxide electrode to construct a hole transport layer. The hydroxyl groups of the fluorinated alcohol can form hydrogen bonds with the phosphorus-oxygen double bonds in the phosphonic acid groups, reducing the electron density of the phosphorus atoms and thus weakening the chemisorption barrier of the self-assembled monolayer on the electrode surface, promoting the formation of a uniform and dense monolayer film. The resulting interface layer effectively suppresses interface defects and promotes hole extraction. Organic solar cells prepared using this method exhibit excellent performance in terms of energy conversion efficiency, stability, and large-area processing adaptability. This invention features a simple process, low cost, and good reproducibility, and has promising prospects for industrial application.

The application belongs to the technical field of photoelectric materials, and relates to a star-shaped self-assembled hole transport layer material, a preparation method and application thereof. The star-shaped self-assembled hole transport layer material comprises a star-shaped organic compound with a structure shown in general formula (1). The star-shaped organic compound takes an aromatic three-site group as a core, adopts a star-shaped bridging unit, and connects three benzo carbazole phosphate units. The star-shaped organic compound as a hole transport layer material of a photoelectric functional device is beneficial to the improvement of device efficiency and stability, and provides a reliable foundation for the industrialization development of perovskite solar cells and organic solar cells.

To provide a laminate which stably exhibits high barrier properties.SOLUTION: A barrier film includes a layer A on a base material film, wherein the layer A contains Mg and Si, when 10 points are collected at an interval of 1 m in a longitudinal direction of the film from a central part in a width direction, and are measured by a transmission electron microscope, standard deviation in the longitudinal direction of the thickness of the layer A is 30 nm or less, and when 10 points are collected at an interval of 1 m in the longitudinal direction of the film from the central part in the width direction, atomic concentrations (atom%) of a Mg atom and an Si atom of the layer A analyzed by X-ray photoelectron spectroscopy are represented by YMg and YSi, where standard deviation in the longitudinal direction of YMg / (YMg+YSi) is 0.055 or less.SELECTED DRAWING: None

The application belongs to the field of organic solar cell materials, and discloses an organic photoelectric compound based on a vinylcarbazole phosphonic acid structure and a preparation method and application thereof, the organic photoelectric compound has the following four structures: The organic photoelectric compound based on the vinylcarbazole phosphonic acid structure of the application forms firm chemical bonding with a metal oxide electrode (such as ITO or ZnO) through a phosphonic acid group, effectively passivates surface defects, and optimizes energy level alignment; meanwhile, the polymer main chain endows the material with excellent film-forming property and covering capacity, can form a uniform, dense and stable interface layer on the electrode, thereby significantly inhibiting charge recombination, improving carrier selective transmission efficiency, and enhancing the stability of the device in long-term operation and complex environment. The system provides an effective material solution for constructing an OPV device with high performance, high stability and suitable for large-area processing.

The invention discloses a method for improving the tensile property of an organic photovoltaic active layer based on chlorinated plastic and application. Introducing chlorinated plastic as a function regulator into the donor-acceptor blend to obtain an active layer solution, spin-coating the solution on the surface of the PSS layer glass substrate, and after spin-coating, performing thermal annealing treatment to form an organic photovoltaic active layer film, the chlorinated plastic accounting for 5-50% of the total mass of the organic photovoltaic material. The prepared organic photovoltaic active layer film can be further used for constructing a solar cell, and through modification of the chlorinated plastic on the active layer, the microstructure of the active layer can be effectively regulated and controlled and the interaction force between molecules can be enhanced, so that collaborative optimization of mechanical properties and photoelectric properties is realized. According to the method, the tensile flexibility of the high-efficiency organic solar cell can be improved, the photoelectric conversion efficiency of the high-efficiency organic solar cell can be maintained and even improved as much as possible, and the method has remarkable technical innovation and application and popularization value.

The invention discloses a method for evaluating photoelectric conversion efficiency of an organic solar cell material. The method comprises the following steps: firstly, acquiring the stacking morphology of a material by utilizing molecular dynamics simulation and performing molecular slicing; then, constructing a multi-dimensional geometric feature matrix containing internal deformation and external relative positions of characterization fragments and angle features based on a centroid fitting plane; performing dimension reduction processing on the feature matrix by adopting principal component analysis, extracting principal component features reflecting deformation and spatial distance, and performing morphological clustering according to the principal component features to screen effective clustering morphologies; and finally, in combination with the electron coupling value calculated by quantum chemistry and the corrected equivalent distance based on the principal component, establishing a mapping relationship to evaluate the material efficiency. According to the method, by introducing the centroid weight and the deformation parameters, geometric representation errors existing when non-planar and flexible organic molecules are processed through a traditional method are effectively solved, and the prediction precision and robustness of novel organic photovoltaic material screening are remarkably improved.

The application discloses a kind of high-efficiency super-soft organic solar cell of top incidence structure, it includes flexible substrate, anode, anode modification layer, active layer, cathode modification layer, cathode and antireflection layer from bottom to top, wherein the cathode is based on the transparent electrode of ultrathin silver.Especially by preferred cathode modification layer and introducing not more than 2nm thick gold as seed layer, make ultrathin silver surface more smooth and uniform, the transparent electrode can further improve the photoelectric energy conversion efficiency (PCE) of organic solar cell.Meanwhile, using the wide adaptability of top incidence structure to different substrates, the organic solar cell can also achieve comparable PCE (17.32%) with mm level rigid glass substrate on the polyimide flexible substrate with thickness of only 1.3 μm.Therefore, the highest efficiency of super-soft organic solar cell so far is obtained, and the highest power density (39.72W g ‑1 ) in all photovoltaic technologies at present is also obtained.

The invention discloses an organic solar cell based on a dihalogen benzene additive, and a forward device of the organic solar cell comprises a transparent conductive substrate ITO, a hole transport layer, an organic active layer, an electron transport layer and a metal electrode which are sequentially stacked from bottom to top, the organic active layer comprises a polymer donor PM6, a non-fullerene electron acceptor L8-BO and a dihalogenated benzene additive TCBB. According to the organic solar cell based on the double-halogen benzene additive and the preparation method of the organic solar cell, the double-halogen benzene is introduced into the active layer of the organic solar cell as the active layer additive, and the aggregation state structure of the active layer film is optimized, so that the phase separation degree of a donor-acceptor material is improved, and the charge separation and transmission efficiency is improved. According to the organic solar cell prepared by adopting the technical scheme, the photoelectric conversion efficiency can reach 20.11%, the photoelectric conversion efficiency is obviously superior to that of a control group device with a DIO additive, and the device has good stability.

The invention belongs to the field of solar cells, and particularly relates to an inverted organic solar cell and a preparation method and application thereof. The invention provides a preparation method of an inverted organic solar cell, and the functional layers of the cell are sequentially a cathode, an electron transport layer, an active layer, a hole transport layer and an anode along the direction from the cathode to the anode. The preparation method of the active layer comprises the following steps: coating the surface of the electron transport layer with a polymer solution to form an active layer precursor, coating the active layer precursor with a small molecule solution, and heating to obtain the active layer. The photovoltaic conversion efficiency of the inverted organic solar cell prepared by the method is relatively good.

The application discloses a kind of self-assembled monolayer materials with asymmetric intermediate core and method and application, belong to solar cell field.The self-assembled monolayer material described above is combined with phosphonic acid, sulfonic acid and other anchoring groups using asymmetric intermediate core, with good hydrophobicity and high light transmittance, can be used as hole transport layer material, for preparing p-i-n structure organic solar cell and perovskite solar cell, wherein, organic solar cell has realized 18.9% energy conversion efficiency, while showing excellent environmental stability, still maintains more than 95% of initial performance after 480h storage in air, far superior to traditional PEDOT:PSS interface layer based device.The application can significantly improve the energy conversion efficiency and environmental stability of solar cell by designing and developing a series of self-assembled monolayer materials with asymmetric intermediate core.

The invention provides an organic solar cell acceptor material containing a lipoic acid group as well as a preparation method and application of the organic solar cell acceptor material. The chemical structural formula of the acceptor material is shown in the specification, AK is selected from one of a saturated alkyl chain, an ether chain or a siloxane chain with the carbon atom number of 1-20, and X and Y are independently selected from H, I, F or Cl respectively. According to the invention, the crosslinking group lipoic acid is introduced into the organic solar cell acceptor material for the first time, and the disulfide bond of the organic solar cell acceptor material can realize dynamic ring opening under the conditions of ultraviolet irradiation and heating; therefore, the material can improve the microstructure of an active layer film in an organic solar cell device, improve the stability of a photovoltaic device and enhance the mechanical property of the device, so that the balance problem between the mechanical durability and the photoelectric property of the photovoltaic device is improved.

The application provides a near-infrared light absorption enhanced semi-transparent organic solar cell and a preparation method thereof. The cell comprises, from bottom to top, a substrate, an anode, a hole transport layer, an organic active layer, an electron transport layer, a metal top electrode and a near-infrared reflection layer; the hole transport layer is a PEDOT:PSS / gold nanobipyramid film; the organic active layer is a PM6:Y6 film; and the near-infrared reflection layer is a LiF / MoO3 film. The application uses a non-fullerene material Y6 as an acceptor, reduces the proportion of PM6 in the active layer, and increases the visible light transmittance. The gold nanobipyramid is introduced into the hole transport layer, the plasmonic effect is used, the near-infrared band light absorption is increased, the secondary absorption of near-infrared light is realized in combination with the LiF / MoO3 film, the PCE is improved under the premise of maintaining good AVT, and thus the optimal device light energy utilization efficiency is obtained.

A preparation method of an active layer of a flexible organic solar cell based on polymer toughening, comprising: dissolving PM6 in toluene to configure a donor solution; dissolving BTP-eC9 in toluene to configure a solution, adding 0-20wt% of PM6 and 1,3-dibromo-5-chlorobenzene to form an acceptor solution; coating the donor solution and the acceptor solution on the surface of the PEDOT:PSS hole transport layer of the flexible organic solar cell in turn twice, and annealing after each coating to obtain the active layer of the flexible organic solar cell based on polymer toughening. The application utilizes the dilution of the acceptor solution by the polymer donor PM6 to inhibit excessive crystallization of the acceptor, utilizes the compatibility difference between the donor and the acceptor to optimize the solution penetration process of the last solution to the bottom layer of the donor film in the deposition process, spontaneously induces the gradient distribution of the active layer of the donor and the acceptor, and cooperatively improves the energy conversion efficiency and the mechanical stability of the flexible organic solar cell.

The application provides a triarylamine compound and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials.The triarylamine compound has high hole mobility and electron blocking performance, and can improve the injection and transmission efficiency of holes;when the triarylamine compound is applied to a hole transport region in an organic electroluminescent device, the luminous efficiency and service life of the device can be effectively improved;simultaneously, the triarylamine compound also has high light extraction efficiency;when the triarylamine compound is applied to a cover layer in an organic electroluminescent device, the luminous efficiency and service life of the organic electroluminescent device are improved;the preparation method of the organic compound is simple, raw materials are easy to obtain, the organic compound can be widely applied to the fields of panel display, illumination light source, organic solar cell, organic photoreceptor or organic thin film transistor, and has good application effect and industrialization prospect.

The invention provides a polymerizable cross-linked micromolecular non-fullerene receptor and a preparation method thereof, and relates to the technical field of organic solar cells, the polymerizable cross-linked micromolecular non-fullerene receptor comprises a receptor molecule, the receptor molecule is formed by connecting at least two terminal receptor elements A and a central donor element D in a conjugated skeleton mode, the terminal acceptor element A is a cyano-substituted indandione derivative. According to the polymerizable cross-linked micromolecular non-fullerene receptor and the preparation method thereof, side chain functionalization and donor skeleton construction are combined into a few steps, so that the synthesis path is greatly simplified, and the purification and separation times of an intermediate are reduced; under the mild Pd (0) and Cu (I) catalytic condition, a polymerization active functional group P can be completely tolerated, side reaction is avoided, and additional protection-deprotection operation is not needed; the whole process steps are concentrated, the accumulative yield is increased by 20%-30% compared with that of a traditional multi-step route, the purity of a final product is larger than or equal to 98%, and efficient preparation can be achieved under conventional laboratory conditions.

The invention provides an arylamine derivative and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. The invention aims to solve the technical problems of low luminous efficiency and short service life of an organic electroluminescent device caused by low mobility of a current hole transport material and low refractive index of a covering layer material. The compound provided by the invention has high hole mobility and refractive index, good thermal stability and good film-forming property, and can significantly improve the luminous efficiency and service life of a device, optimize the light extraction effect and block impurities. The organic light-emitting device can be widely applied to the fields of panel display, illumination light sources, flexible OLEDs, electronic paper, organic solar cells, organic photoreceptors or organic thin film transistors, indication boards, signal lamps and the like.

The invention provides an organic solar cell device prepared through electric field assisted solution shear coating and a preparation method, and belongs to the technical field of organic photovoltaic device preparation. An organic solar active layer based on a non-fullerene receptor is selected, and a halogen-free solvent o-xylene is adopted; in the active layer film deposition process, an external pulse polarization electric field is applied to control molecular arrangement and microcrystal morphology, so that the photoelectric conversion efficiency of an organic photovoltaic device without extra thermal annealing is improved. The preparation process of the organic solar cell is simplified, the method has wide commercial application prospects, and a detailed solution is provided for commercialization of the organic solar cell.

This invention discloses an inverted organic solar cell based on a substrate-modified substrate and its fabrication method, relating to the field of solar cell technology. This invention utilizes the fullerene derivative PC... 61 BM is used to modify the printing substrate, and D18:L8-BO is selected as the active layer. The active layer D18:L8-BO is laminated onto the PC. 61 The printing substrate modified with BM was used to construct a structure of Glass / ITO / ZnO / PC. 61 The inverted organic solar cell BM / D18:L8-BO / MoO3 / Ag achieved a photoelectric conversion efficiency of up to 19.32%.

The invention discloses a benzothiazole non-condensed ring A-D-A '-D-A type organic solar cell acceptor material and a preparation method and application thereof, a benzothiazole unit is used as a central nuclear electron withdrawing unit (A-unit), and then the benzothiazole unit, the central nuclear electron withdrawing unit (A-unit), an electron donating unit (D-unit) and a terminal group are synthesized into the organic solar cell acceptor material with an A-D-A'-D-A structure. Wherein benzothiazole as an asymmetric central core structure can enhance the dipole moment of molecules, optimize the accumulation among the molecules and improve the blending property of a donor and an acceptor, and the characteristics can jointly promote charge transfer to inhibit the bimolecular recombination condition. The molecular morphology is regulated and controlled by connecting different structural groups to a top branched chain, and meanwhile, different atoms can be introduced into a benzene ring to regulate and control the chemical energy level. In addition, the polymer also has the characteristics that the aggregation behavior and the light absorption range of molecules can be adjusted by accessing different terminal groups. The benzothiazole-based non-fused ring A-D-A '-D-A type acceptor material provided by the invention is few in synthesis and preparation steps, simple in purification process and high in yield.

The invention belongs to the technical field of flexible solar cells, and relates to a flexible organic solar cell containing a cross-linking agent with adjustable cross-linking characteristics and a preparation method of the flexible organic solar cell. The invention discloses a flexible organic solar cell containing a cross-linking agent with adjustable cross-linking characteristics. The flexible organic solar cell sequentially comprises a substrate, a positive electrode, a hole transport layer, an active layer, an electron transport layer and a metal electrode from bottom to top, the active layer comprises 1 to 10 weight percent of lipoic acid-polyethylene glycol-carboxyl; the active layer further comprises a donor material and an acceptor material, the donor material is selected from PM6, D18, PTQ10 and / or PCE10, and the acceptor material is selected from Y6, N3, Y6-BO, BTP-eC9 and / or L8-BO. Lipoic acid-polyethylene glycol-carboxyl is added into the active layer to serve as a cross-linking agent, the cross-linking agent can form an adjustable cross-linked network in situ in the preparation process, and the mechanical strength, toughness and durability of the film can be remarkably improved.

The application discloses a kind of based on benzo phenazine donor core asymmetric organic small molecule photovoltaic material and its preparation method and application.The asymmetric organic small molecule photovoltaic material has structure: wherein, D is donor unit, A is acceptor unit;The donor unit is selected from one of the structures shown in formula I: formula I;In formula I, R 12 Independent selection is one of hydrogen, halogen, trifluoromethyl, alkyl, X is selected from one of sulfur atom or selenium atom;The acceptor unit is selected from one of the structures shown in formula II: formula II;In formula II, R 13 It is selected from one of H, F or Cl;Indicate the connection position of acceptor unit or donor unit.The organic small molecule photovoltaic material designed and synthesized in the application has asymmetry, better molecular packing effect, strong crystallinity and solution processing, and can be used in organic solar cell, to improve its energy conversion efficiency.