2843 results about "Hole transport layer" patented technology

The present invention discloses a self-assembled monolayer hole transport material based on an alkyl polyphosphate anchoring group, a synthesis method thereof, and an application in an inverted perovskite solar cell. The present invention uses carbazole or 3,6-diphenylcarbazole with good hole transport properties as a parent core, and achieves complete coverage and stable self-assembly of the material on the substrate surface by improving the anchoring group from traditional alkyl monophosphate to alkyl diphosphate and triphosphate. The synthesis method of the present invention is simple and the synthesis cost is low. The prepared material can achieve the dual functions of hole transport and perovskite interface passivation, while enhancing the self-assembly strength and stability. When the material is used as a hole transport layer in an inverted perovskite solar cell, a photoelectric conversion efficiency of >20% can be obtained without doping, and the material has broad application prospects.

The invention discloses a self-assembled monomolecular layer hole transport material, a hole transport layer and a battery thereof. According to the present invention, the compound having different anchoring groups and represented by the formula (I) can be subjected to firm self-assembly with the substrate surface through the chemical bonding manner, such that the good coverage rate is provided, the film forming quality is increased, and the transmission performance is improved; and meanwhile, the material has a rigid conjugate large-plane condensed ring core structure, so that the hole transmission performance of the material is ensured, and the photovoltaic performance is favorably improved. When the material is applied to a perovskite solar cell to prepare a hole transport layer, the hole extraction capability can be enhanced, and the open-circuit voltage, the filling factor and the photoelectric conversion efficiency of a device can be improved.

The invention discloses a thiapyran molecule modified solar cell and a preparation method thereof. The cell sequentially comprises an ITO (Indium Tin Oxide) conductive glass layer, a 4-aminotetrahydro-2H-thiapyran-1, 1-dioxide hydrochloride modified [4-(3, 6-dimethoxy-9H-carbazole-9-yl) butyl] phosphonic acid hole transport layer, a Cs0.05 (FA < 0.77 > MA < 0.23 >) < 0.95 > Pb < (I < 0.77 > Br < 0.23 >) 3 wide-band gap perovskite thin film, a phenethyl ammonium iodide passivation layer, an electron transport layer of [6, 6]-phenyl-C61-butyric acid isomethyl ester, a 2, 9-dimethyl-4, 6, 7-tetrahydro-2H-thiapyran-1, 1-dioxide hydrochloride modified [4-(3, 6-dimethoxy-9H-carbazole-9-yl) butyl] the hole barrier layer is made of 1, 7-biphenyl-1, 10-phenanthroline; the electrode layer is made of metal Ag; according to the scheme, the hole transport layer is modified through thiapyran molecules, agglomeration of the hole transport layer is relieved, and a more compact and more uniform self-assembled single layer is generated by inducing favorable crystal orientation. A good bottom interface is obtained based on thiapyran molecule modification, and ordered growth of high-quality perovskite crystal grains is promoted. In addition, the energy level of the hole transport layer is effectively adjusted through thiapyran molecule treatment, and the extraction and transmission of carriers by the hole transport layer are enhanced.

The invention provides a perovskite laminated photovoltaic cell assembly and a preparation method thereof, the perovskite laminated photovoltaic cell assembly comprises a plurality of first battery packs connected in parallel, each first battery pack comprises a plurality of laminated cells connected in series, and each laminated cell comprises a perovskite cell and a crystalline silicon cell which are stacked; a first light absorption layer and a first hole transport layer of the perovskite cell are etched by P2 laser to form a plurality of perovskite sub-cells which are connected in parallel, and the perovskite cell is used for absorbing short-wavelength light in front sunlight; the second hole transport layer and the intermediate electrode layer of the crystalline silicon cell are etched by P1 laser to form a plurality of crystalline silicon sub-cells which are connected in parallel, the perovskite cell is used for absorbing long-wavelength light in front sunlight, and the absolute value of the difference between the current density of the perovskite cell and the current density of the crystalline silicon cell is smaller than or equal to a first preset value. According to the laminated battery piece, the current density consistency of the perovskite battery and the crystalline silicon battery in the laminated battery piece is high, the electrical loss can be reduced, and the power generation efficiency can be improved.

An organic light-emitting device comprises an anode, a cathode and an organic layer formed between the anode and the cathode, and the organic layer comprises a hole injection layer, a hole transmission area, an electron blocking layer, a light-emitting area and an electron transmission area. The hole transport region comprises a first material and a second material, the first material and the second material are sequentially evaporated to form two hole transport layers, and the first material is selected from a compound shown in the formula 1; and the second material is selected from a compound shown in a formula 2. According to the invention, the first material with a high refractive index is used as the first hole transport layer, the second material with a low refractive index is used as the second hole transport layer, and the structures of the first material and the second material are respectively limited at the same time. The invention overcomes the limitation of a single material or a simple mixed material in the aspects of hole transport and luminous efficiency. .

The invention provides a vertical structure ultraviolet photoelectric detector and a preparation method thereof. The ultraviolet photoelectric detector is of a vertical structure, the design facilitates light absorption of the ultraviolet photoelectric detector, the light utilization rate of the ultraviolet photoelectric detector is improved, and compared with a horizontal structure, the transmission distance is shortened, and the cost is low; the ultraviolet photoelectric detector provided by the invention has a relatively high switching ratio of light and dark current and relatively small dark current, and also has a very high response speed under the condition of keeping the switching ratio of light and dark current and the dark current; a PN junction is formed between the nickel oxide hole transport layer and the beta-phase gallium oxide single crystal, so that the ultraviolet photoelectric detector has self-driving performance; in the manufacturing process, the substrate is used as a supporting frame, and the extraction electrode is packaged in one step through the conductive adhesive tape, so that 3-5 photoetching steps of a traditional horizontal structure are omitted, the process is simplified, and the process manufacturing is simpler.

The embodiment of the invention provides a perovskite cell, a preparation method thereof and a laminated cell. The perovskite cell comprises a conductive substrate, an inorganic hole transport layer, an organic hole transport layer, a perovskite absorption layer, an electron transport layer and an electrode which are sequentially arranged in a preset direction. Wherein the organic hole transport layer comprises a first hole transport material and a second hole transport material; the first hole transport material comprises a carbazole hole material with a phosphate group; the second hole transport material includes (2-(pyrene-1-yl) ethyl) phosphonic acid. The perovskite cell provided by the embodiment of the invention has a good buried bottom passivation effect, so that energy levels between the hole transport layer and the perovskite absorption layer can be better matched, the carrier extraction rate is improved, the overall cell parameters are improved, and the problem of poor performance of the perovskite cell is solved. The embodiment of the invention also provides a preparation method of the perovskite cell and a laminated cell applying the perovskite cell.

The invention discloses a modified hole transport layer and a preparation method thereof, a perovskite solar cell and a power utilization device, and belongs to the technical field of solar cells. The modified hole transport layer comprises a hole transport layer and a modified layer arranged on the surface of one side, far away from a substrate, of the hole transport layer; the material of the hole transport layer comprises a self-assembly single-layer material and an organic amine salt; and the material of the modified layer comprises organic amine salt. The organic amine salt is used as an additive to modify the self-assembled single-layer material to prepare the hole transport layer, and the organic amine salt is further used as a surface treating agent to modify the hole transport layer, so that the problems of distribution uniformity and surface wettability of the self-assembled single-layer material can be solved; the efficiency of the large-area perovskite assembly is effectively improved, and the large-area processing requirement is met.

The invention provides a method for improving the efficiency of a perovskite solar cell, and relates to the technical field of solar cells, the cell structure sequentially comprises a bottom substrate, a transparent electrode, a hole transport layer, a perovskite light absorption layer, an interface modification layer, an electron transport layer, a buffer layer and a metal electrode from bottom to top; a new additive 4-(2-aminoethyl) benzenesulfonic acid hydrochloride is introduced into the perovskite light absorption layer, the additive is introduced into the perovskite light absorption layer by being dissolved in a perovskite precursor solution, and the dosage of the additive is 0.1-1.5 mg / mL. Based on the method, the defect density of shallow energy level and deep energy level of perovskite is reduced, a more intrinsic perovskite absorption layer is formed through induction, balance extraction of electrons and holes is promoted, and then the open-circuit voltage and efficiency of the solar cell are remarkably improved.

The invention discloses a perovskite solar cell, a preparation method thereof, a cell module and a laminated cell. The perovskite solar cell comprises a composite hole transport layer and a perovskite light absorption layer, the perovskite light absorption layer is located on one side of the composite hole transport layer, and the composite hole transport layer comprises polyvinyl acetate and an SAM material. Therefore, the polyvinyl acetate is of a cross-linked network structure and can play a role in stabilizing the SAM material and inhibiting the SAM material from diffusing to the perovskite light absorption layer, so that the stability of the self-assembled monomolecular layer is improved, and the stability of the perovskite solar cell is improved; in the perovskite solar cell, carbonyl oxygen in polyvinyl acetate can be coordinated with uncoordinated metal ions in the perovskite light absorption layer to realize passivation of a bottom interface of the perovskite light absorption layer, so that interface recombination is reduced, and the performance of the perovskite solar cell is improved.

Disclosed in the disclosure are a light-emitting device and a preparation method therefor. The light-emitting device includes a positive electrode, a hole transport layer, a light-emitting layer, and a negative electrode, which are arranged in a stacked manner.

The invention discloses a metal organic framework material, a preparation method thereof and a perovskite battery, and belongs to the technical field of perovskite batteries. The preparation method comprises the following steps: dissolving 1, 2, 4, 5-benzene tetracarboxylic acid in an organic solvent, adding ZrCl4 and a regulator acetic acid, carrying out a heating reaction to obtain a reactant, and carrying out centrifugation, washing and vacuumizing on the reactant to obtain the metal organic framework material. The metal organic framework material has high-density free carboxyl and a nano structure, the high-density free carboxyl can achieve the purpose of adsorbing lithium ions, and the nano structure can obtain better dispersity. When the metal organic framework material is applied to a hole transport layer of a perovskite battery, lithium ions can be well adsorbed, free carboxyl groups can also form chemical bonds with Pb ions of a perovskite active layer, surface defects and unsaturated bonds of the perovskite active layer are reduced, compounding of electrons and holes is prevented, and the performance of the perovskite battery is improved. Therefore, the electrochemical performance and the stability of the perovskite battery are improved.

The invention belongs to the technical field of solar cells, and relates to a perovskite laminated cell and a preparation method thereof, the perovskite laminated cell can reduce light parasitic absorption, the perovskite laminated cell comprises a bottom crystalline silicon cell, the bottom crystalline silicon cell comprises a substrate, the substrate comprises a first surface and a second surface which are opposite to each other, a first tunneling oxide layer and a first composite passivation layer are sequentially arranged on the first surface in the direction perpendicular to and away from the first surface, and the first composite passivation layer comprises first doped crystalline silicon conductive regions and first wide-band gap conductive regions which are alternately arranged in the direction parallel to the first surface; the top perovskite cell is arranged on the first composite passivation layer and is electrically connected with the bottom crystalline silicon cell, and the top perovskite cell comprises a hole transport layer, a perovskite active absorption layer, an electron transport layer, an interface buffer layer, a transparent conductive layer and an anti-reflection layer which are sequentially far away from the first composite passivation layer; and a first electrode in electrical contact with the transparent conductive layer.

The invention discloses a solar cell module, a preparation method, electric equipment and power generation equipment, the solar cell module comprises a hole transport layer, a light absorption layer and a passivation layer, the hole transport layer comprises a first hole transport layer and a second hole transport layer, and the second hole transport layer is provided with a plurality of pores; the surface, close to the second hole transport layer, of the passivation layer is at least partially embedded in the pores of the second hole transport layer, and the surface, away from the second hole transport layer, of the passivation layer is uneven. According to the embodiment of the invention, good hole transport efficiency is provided through the first hole transport layer; the contact area between the second hole transport layer and the light absorption layer is increased through the second hole transport layer with a plurality of pores, and the hole extraction rate is improved; the hole transmission efficiency is improved through the passivation layer; the hole transport layer and the passivation layer are cooperatively used, so that the device performance of the corresponding solar cell module is improved.

The invention belongs to the photovoltaic field, and particularly relates to a self-assembled monolayer (SAMs), a perovskite solar cell and a preparation method. The self-assembled monolayer comprises a self-assembled monolayer molecule and a thiophene organic matter. The thiophene organic matter forms a frame structure after SAMs film forming, the stability of SAMs can be improved, meanwhile, the carrier transport efficiency of a hole transport layer is improved through the pi-pi conjugation effect, and the performance of a device is improved.

The invention discloses a bulk phase passivation perovskite solar cell and a preparation method and application thereof, and belongs to the field of new energy. The perovskite solar cell comprises a conductive substrate, a hole transport layer, a dielectric layer, a perovskite light absorption layer, an electron transport layer and a top electrode layer which are stacked in sequence, materials of the perovskite light absorption layer comprise (FA < 0.95 > MA < 0.05 >) < 0.95 > Cs < 0.05 > Pb < (I < 0.95 > Br < 0.05 >) < 3 > and guanidyl chloride. According to the perovskite solar cell provided by the invention, a bulk phase passivation technology is adopted, guanidyl chloride is used as a passivator, defect recombination in a perovskite material can be reduced, collection and migration of charge carriers can be enhanced, and the overall performance of the cell, especially the photoelectric conversion efficiency, can be improved.

The invention relates to the technical field of organic electroluminescence, in particular to an organic electroluminescence device. A hole transport region of the organic electroluminescent device provided by the invention comprises a first hole transport layer and a second hole transport layer, the refractive index n (HT1) of a compound contained in the first hole transport layer is between 1.70 and 2.20, the refractive index n (HT2) of a compound contained in the second hole transport layer is between 1.60 and 1.90, and the hole transport region comprises a compound shown in the formula 1, the compound has excellent hole transport performance, and the luminous efficiency and the service life of a device are improved; in addition, the hole transport region can further contain a compound shown in the formula 2, and the device effect can be further improved. The organic light-emitting device provided by the invention has good application effect and industrialization prospect, and can be applied to various fields such as display, illumination, business and medicine.

The invention discloses a self-assembled monomolecular material based on pyrene-carbazole diphosphate and a preparation method and application thereof, and belongs to the technical field of perovskite solar cells. According to the material, two carbazole units and a pyrene core are in conjugate connection to form a large conjugate plane structure, and the material has the following advantages: 1) a rigid molecular skeleton and an expanded conjugate system significantly improve thermal stability and chemical stability; 2) the conjugate plane of pyrene enhances intermolecular pi-pi accumulation, and promotes hole extraction and transmission; and 3) energy level matching is accurately regulated and controlled, a compact interface layer is formed, and electron-hole recombination is inhibited. When the hole transport layer is applied to the trans-perovskite solar cell, the photoelectric conversion efficiency and the long-term stability can be improved at the same time, and the hole transport layer has a good industrialization prospect.

The invention provides a preparation method and application of a quantum dot light-emitting diode based on interface modification, and belongs to the technical field of quantum dot materials. The preparation method comprises the following steps: (1) spin-coating PEDOT: PSS-4083 on ITO (Indium Tin Oxide) to obtain a hole injection layer; (2) spin-coating polyvinyl carbazole on the hole injection layer in the step (1) to obtain a hole transport layer; (3) spin-coating pyridine on the hole transport layer in the step (2) to obtain a modification layer; (4) spin-coating ZnCdS / ZnS quantum dot normal octane on the modification layer in the step (3) to obtain a quantum dot film; and (5) spin-coating an Mg-doped ZnO ethanol solution on the quantum dot film in the step (4), and performing high-vacuum evaporation to obtain the quantum dot light-emitting diode. Compared with an original device, the EQE of the prepared quantum dot light emitting diode is improved by 16.5%, and the highest brightness is improved by 12.5%.

The invention relates to a compound, a preparation method, a hole transport layer material, a photovoltaic device and a photovoltaic module. R1 and R4 are respectively and independently selected from amino and derivatives thereof, hydroxyl and derivatives thereof, methoxyl and derivatives thereof, sulfydryl and derivatives thereof, methylthio and derivatives thereof, thiophene groups and derivatives thereof, phosphate groups and derivatives thereof, carboxylic acid groups and derivatives thereof, and sulfonic acid groups and derivatives thereof; r2 and R3 are independently selected from alkyl, a phosphate group and derivatives thereof, a carboxylic acid group and derivatives thereof, a sulfonic acid group and derivatives thereof, and trimethoxysilyl propyl and derivatives thereof. The material is beneficial to improving the photoelectric conversion efficiency of photovoltaic devices and photovoltaic modules.

The invention discloses a perovskite light emitting diode, and belongs to the technical field of perovskite light emitting / displaying. The perovskite light-emitting diode comprises a substrate with a transparent electrode, a ZnO electron transport layer, a perovskite light-emitting layer, a hole transport layer, an anode buffer layer and an anode which are arranged in sequence. Wherein the ZnO electron transport layer is a ZnO film subjected to surface modification by adopting an organic silicon cross-linking agent (containing a functional group capable of reacting with amino to form a cross-linked network structure). The surface of the ZnO film is modified by adopting the organic silicon cross-linking agent containing the functional group which can react with the amino group to form the cross-linked network structure, and the cross-linked network structure is formed through the reaction of the functional group and the amino group, so that the mechanical property of the perovskite film is remarkably improved. The method not only enhances the flexibility and crack resistance of the perovskite thin film, but also effectively improves the binding force between the perovskite thin film and the ZnO substrate, and provides powerful support for wide application of the perovskite material in flexible devices.

The invention relates to a preparation method of a local ITO interconnected perovskite-TOPCon laminated cell, which comprises the following steps: taking an n-type monocrystalline silicon wafer as a substrate, cleaning and texturing, diffusing boron on the back to form a P + emitter, oxidizing at high temperature, and treating the surface through acid etching and alkali polishing; sequentially preparing a tunneling oxide layer and a phosphorus-doped polycrystalline silicon layer on the front surface, annealing and crystallizing, depositing an aluminum oxide film and a multi-layer silicon nitride film on the back surface after cleaning, and depositing a single-layer silicon nitride film on the front surface; preparing a back metal electrode, etching according to a designed pattern to remove a local silicon nitride film on the front surface, sequentially preparing an ITO interconnection layer, a hole transport layer, a perovskite layer, a passivation layer, an electron transport layer and an ITO transparent conductive layer on the front surface, and finally preparing a front metal electrode and solidifying to form a contact electrode. According to the invention, the problems of back corrosion risk, effective area loss and tedious process in the existing method are solved, full-size manufacturing is realized, the cell performance is improved, and industrialization is easier.

The invention provides an organic-inorganic perovskite light absorption layer, a perovskite solar cell and respective preparation methods, the light absorption layer adopts three-source co-evaporation to form an inorganic material layer, then the inorganic material layer is coated with an organic ammonium salt, cesium halide and lead chloride are introduced in the preparation method, a large-framework CsPb2X5 (X = Cl / Br / I) quasi-two-dimensional layered structure is formed in the inorganic layer, and the perovskite solar cell is prepared. The distance between crystal surfaces in the inorganic framework is enlarged, and permeation of an organic ammonium salt solution is promoted. The content of the lead chloride is controlled by regulating the deposition rate of the lead chloride so as to form gradient distribution, so that energy level alignment of the light absorption layer and the hole transport layer is realized, and the efficiency of the perovskite solar cell is improved.

The invention discloses a perovskite solar cell based on diamine molten salt surface modification and a preparation method thereof, and the perovskite solar cell comprises a transparent conductive substrate layer, a hole transport layer, a perovskite light absorption layer, a surface modification layer, an electron transport layer, an interface buffer layer and an electrode layer from bottom to top. Or a transparent conductive substrate layer, an interface buffer layer, a surface modification layer, a perovskite light absorption layer, a hole transport layer and an electrode layer, wherein the surface modification layer is diamine molten salt. According to the invention, the surface of the perovskite cell is modified by using diamine molten salt, and by inducing a gradient energy band structure and ordered arrangement of molecules, optimizing charge transfer and realizing interface energy band alignment, compact stacking of a perovskite film is promoted, grain boundary defects are reduced, and the surface roughness is reduced; the light capture capability and the charge carrier mobility of the perovskite thin film are remarkably improved, and a new thought is provided for the development of a high-efficiency and high-stability perovskite solar cell.

The invention relates to (i) a photovoltaic cell, comprising: an absorber layer comprising a perovskite material; and an ultrathin hole-transport layer; (ii) a photovoltaic cell comprising an absorber layer comprising perovskite material, a 5 hole transport layer and a protective layer located between the absorber layer and the hole transport layer, the protective layer having a valence band with an energy level that is between the energy levels of the valence bands of the absorber layer and the hole transport layer; and (iii) a photovoltaic cell comprising a barrier layer located between inner cell layers and an electrode and configured to suppress 0 diffusion of metal from the electrode into the inner layers. Also disclosed are methods of fabricating said photovoltaic cells and methods of fabricating a doped precursor for use in fabricating a photovoltaic cell.

The present invention relates to an organic electroluminescent device comprising a hole injection layer and a hole transport layer, and a display device comprising the organic electroluminescent device.

The invention relates to the technical field of preparation of organic photoelectric materials, in particular to an organic light-emitting device and a display or lighting device comprising the organic light-emitting device. A hole transport layer compound of the device is obtained by taking a phenyl and alkyl fixed substituted fluorenyl structure as a core fragment and taking a benzo five-membered ring and a limited substituted benzene ring as two side chains of amido, and is matched with a limiting material of a light-emitting auxiliary layer to manufacture an OLED (Organic Light Emitting Diode) element; the light-emitting efficiency and the working life of the organic light-emitting device are effectively improved, and the application prospect is very good.

The invention provides a perovskite solar cell, a preparation method thereof and a photovoltaic module. The perovskite solar cell comprises a first electrode, a hole transport layer, a perovskite layer, an electron transport layer and a second electrode which are stacked in sequence. The material of the hole transport layer comprises a biomolecular material which is fixed on a self-assembly monomolecular layer material through an intermolecular force, and the biomolecular material comprises one or more of guanine, adenine, thymine, uracil, cytosine, hydroxymethylcytosine, xanthine, hypoxanthine, 6-mercaptopurine and corrin. According to the perovskite cell provided by the invention, the biomolecular material with a plurality of nitrogen heterocyclic structures and amino groups is added to generate multipoint hydrogen-bond interaction and pi-pi accumulation with the tail end of the SAM, so that the orderliness of molecular arrangement is improved, and the dipole direction and strength of the whole interface are regulated and controlled; and a coordination bond or hydrogen bond network is formed by the coordination compound and uncoordinated cations or anions in perovskite, so that interface defects are effectively passivated, and the thermal stability and the humid and hot life of a device are enhanced.

The invention discloses a perovskite solar cell and a preparation method thereof, and belongs to the technical field of perovskite solar cells. SAM molecules are introduced between the hole transport layer and the perovskite active layer, the photoelectric conversion efficiency of the perovskite solar cell is improved, an interface modification layer comprising a sheet-shaped P-type semiconductor material is further introduced at the interface of the hole transport layer and the SAM layer, the interface of the hole transport layer / the SAM layer / the perovskite active layer is improved, and the photoelectric conversion efficiency of the perovskite solar cell is improved. The hole transport layer and the perovskite active layer are separated from each other, the energy level difference between the functional layers is reduced, the carrier extraction and transmission of an interface are enhanced, the sheet structure of the sheet P-type semiconductor material can cooperate with the compact SAM layer to block the direct contact between the hole transport layer and the perovskite active layer, and the hole transport efficiency is improved. And the reduction reaction of halide ions in an interinterface hole transport material and a perovskite material is effectively prevented.

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.