291 results about "Organic solar cell" patented technology

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 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 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 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 invention discloses composite hole transport layer ink, an organic photovoltaic device and a manufacturing method and application of the organic photovoltaic device. The composite hole transport layer ink comprises inorganic carrier transport material particles, a small molecule additive with sulfonyl and a solvent. The composite hole transport layer ink is low in cost, large-area film formation of a solution-method hole transport layer material can be effectively promoted by adding the small molecule additive, meanwhile, the interface interaction between a solution-method hole transport layer and a metal electrode is obviously improved, and the hole transport efficiency is improved. The charge transfer between the metal electrode and the hole transport layer can be greatly improved, and the performance such as the device efficiency of the large-area organic solar cell can be remarkably improved.

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 present invention discloses a method for screening solar cell devices based on a high-throughput optical model. The method includes the following steps: establishing a database of material optical constants, establishing a functional relationship between the properties of solar cell devices and the parameters of the materials used; calculating the short-circuit current J of the opaque device corresponding to the device to be screened by the transfer matrix method SC ; characterizing the optoelectronic properties of the opaque device corresponding to the device to be screened; establishing a high-throughput optical model by the batch transfer matrix method, calculating the distribution of the optoelectronic field in the device to be screened, and further calculating and recording the optical properties of the device to be screened; selecting the best or required solar cell device according to the calculation results. The present invention designs the device structure of the organic solar cell through a high-throughput optical model based on the transfer matrix, changes the design idea of the organic solar cell, and combines computer programming languages to assist in designing a more functional organic solar cell

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.

This photovoltaic power generation system (1) is provided with a plurality of organic solar cells (20) and a circuit (5). The plurality of organic solar cells (20) are arranged in a first direction (d1) and a second direction (d2) that is non-parallel to the first direction (d1). The circuit (5) connects the organic solar cells (20) adjacent to each other in the first direction (d1).

The present invention discloses a small molecule hole transporting material, a preparation method thereof, and an organic solar cell using the material. A hole transporting material is prepared by using carbazole as the main body and modifying it with a phosphoric acid group. This material has a small steric hindrance, can strengthen the intermolecular force, expands the thermal range of the mesophase of the molecule by improving the molecular crystallinity, and such molecules have the characteristics of low exciton binding energy, high charge transport efficiency, and good film-forming property. It is suitable for the preparation of high-efficiency organic solar cells, has the advantages of large-area preparation of organic solar cells, mass production and commercialization, and obtains an energy conversion efficiency with a relatively high reproducibility and a photoelectric conversion efficiency of 17.397%, which is of great significance for promoting organic solar cells.

The application provides a triamine derivative and an organic light-emitting device thereof, and relates to the technical field of organic photoelectric materials. The application mainly solves the problems of low light-emitting efficiency and short service life of most current organic light-emitting devices. The derivative of the application takes benzene as a center, and at least one or two alkyl groups are connected to the center benzene. The derivative has good film-forming property and thermal stability on one hand, and has good hole mobility, appropriate HOMO energy level and T1 value on the other hand. When the derivative is applied to an organic light-emitting device as a hole transport layer material, the light-emitting efficiency of the device can be effectively improved, and the service life of the device can be prolonged. The derivative of the application is combined with a heterocyclic compound represented by formula II and applied to the device, so that the maximum recombination of carriers is realized, thereby improving the light-emitting efficiency and service life of the device. The application can be widely applied to the fields of panel display, lighting source, organic solar cell, organic photoreceptor or organic thin film transistor and the like.

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.