1023 results about "Electron transporting layer" patented technology

The invention relates to a solar cell and a preparation method thereof, a photovoltaic module, a system and an electric device. The solar cell comprises a first electrode layer, an electron transport layer, an interface passivation layer, a perovskite light absorption layer and a second electrode layer which are arranged in a stacked mode. The interface passivation layer comprises an ionic polymer passivator, a main chain atom of the ionic polymer passivator is at least connected with a substituent R1, R1 comprises a positively charged nitrogen heterocyclic ring, and the ionic polymer passivator further comprises an anion X combined with the positively charged nitrogen heterocyclic ring.

The invention belongs to the technical field of solar cells, and particularly relates to a fluorinated biguanide salt synergistically passivated perovskite solar cell and a preparation method thereof. The method comprises the following steps: S1, coating the surface of a perovskite light absorption layer with a fluorinated biguanide hydrochloride solution to form a synergistic layer; coating the surface of the synergistic layer with a halogenated phenylethylamine solution to form a synergistic passivation layer; and S2, arranging an electron transport layer and a hole blocking layer on the surface of the passivation layer. According to the invention, the synergistic passivation layer is introduced in the preparation process of the perovskite solar cell. The introduction of the fluorinated biguanide salt passivation layer can modify the perovskite crystal and generate the low-dimensional perovskite at the crystal boundary, and the second passivation layer can interact with the low-dimensional perovskite structure, thereby further protecting the perovskite film, improving the interface of the perovskite light absorption layer and the electron transport layer, and improving the short-circuit current density, open-circuit voltage and cell efficiency of the cell.

A light-emitting element includes the following: a cathode; an anode; a light-emitting layer provided between the cathode and the anode; an electron transport layer provided between the cathode and the light-emitting layer; and a potential well provided between the cathode and the light-emitting layer, and being a region having a larger electron affinity than a surrounding region.

The invention belongs to the technical field of photoelectric semiconductor devices, and particularly relates to an infrared organic photoelectric sensor, an array and a chip, the infrared organic photoelectric sensor is used for sensing light, and the sensor comprises a cathode, an electron transport layer, a photosensitive layer, a hole transport layer and an anode which are stacked in sequence; the electron mobility of the electron transport layer and the hole mobility of the hole transport layer meet the following relation: 0.01 < = [mu] h / [mu] e < = 100; wherein [mu] h represents the hole mobility of the hole transport layer, and [mu] e represents the electron mobility of the electron transport layer. Transmission, extraction and collection of carriers in a device are balanced by regulating and controlling the relation between the electron mobility of the electron transport layer and the hole mobility of the hole transport layer, and then the sensitivity of the infrared organic photoelectric sensor and the imaging definition and resolution of a focal plane array device of the infrared organic photoelectric sensor are improved.

The invention discloses a preparation method of a perovskite battery and the perovskite battery, and the preparation method of the perovskite battery comprises the steps: providing a substrate which is provided with a first surface; a metal oxide layer is formed on the first surface through an atomic layer deposition technology, and raw materials of the atomic layer deposition technology comprise an organic metal source and a water source; preparing a self-assembled molecular layer on the metal oxide layer by adopting a spraying process; and forming a perovskite active layer, an electron transport layer and a first conductive layer which are arranged in a laminated manner on one side, away from the substrate, of the self-assembled molecular layer. The problem that the compactness of a subsequent self-assembled film layer is reduced due to the process for preparing a metal oxide film layer in the prior art is solved.

Provided are a support substrate, a thin-film transistor layer, a light emitter layer having a plurality of light emitters that emit mutually different colors of light, and a sealing layer sealing the light emitter layer. Each light emitter includes a first electrode, a hole transportation layer, an emissive layer, an electron transportation layer, and a second electrode. The electron transportation layer contains an oxide nanoparticle, a binder resin, and a photo-initiator.

The invention discloses a laminated solar cell and a preparation method thereof, and relates to the technical field of solar cell manufacturing. The composite layer is laminated on the silicon-based battery, the composite layer comprises a transition layer and an oxide layer which are laminated from bottom to top, and the ratio of the components of the transition layer to the lattice coefficient of a silicon substrate of the silicon-based battery is 10%-20%; the perovskite top cell is stacked on the oxide layer, and the perovskite top cell comprises an electron transport layer, a perovskite layer and a hole transport layer which are sequentially arranged from bottom to top. According to the embodiment, the composite layer composed of the transition layer and the oxide layer is arranged, the interface embedding degree between the silicon substrate cell and the composite layer can be improved through the transition layer, generation of interface defects is reduced, meanwhile, resistance in the vertical direction is weakened through the oxide layer, downward transmission of electrons generated in the perovskite top cell is better facilitated, and the performance of the perovskite top cell is improved. And the overall photoelectric conversion efficiency of the laminated solar cell is improved.

The present application relates to a solar cell and a preparation method therefor, a photovoltaic module, a system and an electric device. The solar cell comprises a first electrode layer, an electron transport layer, an interface passivation layer, a perovskite light absorption layer and a second electrode layer which are stacked. The interface passivation layer comprises an ionic polymer passivator, a backbone atom of the ionic polymer passivator is linked to at least one substituent R1, R1 comprises a positively charged nitrogen heterocyclic ring, and the ionic polymer passivator further comprises an anion X combined with the positively charged nitrogen heterocyclic ring.

The invention discloses a perovskite solar cell based on a fluorine-chlorine synergistic effect. The perovskite solar cell comprises a glass substrate, an electron transport layer, a perovskite light absorption layer, a hole transport layer and a metal electrode which are sequentially stacked, wherein the perovskite light absorption layer is obtained by coating and annealing a perovskite precursor solution containing 3-fluoro-4-chloroaniline iodide. According to the invention, the 2D / 3D perovskite thin film processed by the 3-F-4-ClAnI shows a highly ordered crystal structure, and the photoelectric property of the 2D / 3D perovskite solar cell is obviously improved; and the optimal Pb-I-Pb torsion angle is optimized through the synergistic effect of C-F and C-Cl groups, and the coordination effect of Pb < 2 + > is remarkably enhanced. Compared with the unmodified FAPbI3, the stability of the perovskite thin film device processed by the 3-F-4-ClAnI is obviously enhanced, the non-radiative recombination is effectively inhibited, the interface charge extraction is improved, and the perovskite thin film device has excellent long-term stability at room temperature.

The invention relates to an infrared photodetector (1), comprising an electron transport layer (4) and an infrared photon absorption layer (5) for generating an electrical signal, characterized in that the electron transport layer (4) comprises nanocrystals of a compound selected from SnO2, ZnO, CdS, CdSe, aluminium-doped zinc oxide, Cr2O3, CuO, CuO2, Cu2O3, ZrO2, and mixture thereof and heterostructure thereof and alloy thereof, and in that the infrared photon absorption layer (5) comprises nanocrystals of a compound selected from HgS, HgSe, HgTe, PbS, PbSe, PbTe, Ag2S, Ag2Se, Ag2Te, InAs, InGaAs, and InSb, and mixture thereof, and heterostructure thereof and alloy thereof.

The invention relates to a perovskite / crystalline silicon laminated solar cell structure taking a tin dioxide thin film as a composite layer and a preparation method of the perovskite / crystalline silicon laminated solar cell structure, and belongs to the technical field of photovoltaics. According to the perovskite / crystalline silicon laminated solar cell structure, the tin dioxide thin film is used as a composite layer, so that the cost of cell preparation is reduced; in the preparation method of the perovskite / crystalline silicon laminated solar cell, the composite layer and the electron transport layer can adopt the same preparation method, so that the equipment cost in the preparation process is reduced; the perovskite / crystalline silicon laminated solar cell obtained by the cell structure and the preparation method provided by the invention is relatively low in preparation cost and relatively high in photoelectric conversion efficiency.

The invention relates to a perovskite solar cell and a preparation method thereof, a photovoltaic module, a system and an electric device. The perovskite solar cell comprises a transparent electrode layer, and a perovskite layer, an electron transport layer and a metal electrode which are sequentially arranged on the transparent electrode layer; the electron transport layer comprises an organic electron transport material, a first additive and a second additive; the first additive is prepared from one or more of polymethyl methacrylate, a methacrylic acid-methyl methacrylate copolymer, a 4-vinylpyridine-styrene copolymer, polyacrylonitrile and poly (4-vinylpyridine); the second additive comprises one or more of a compound shown as a formula I and a compound shown as a formula II. The perovskite solar cell provided by the invention has relatively high photoelectric conversion efficiency and relatively good stability.

A preparation method for passivating an inorganic perovskite solar cell based on an S-(2-aminoethyl) isothiourea bromine onium hydrobromide field is characterized in that S-(2-aminoethyl) isothiourea bromine onium hydrobromide is used as a passivation material to be applied to the surface of an inorganic perovskite thin film, and a uniform passivation layer is formed on the surface of perovskite; the electric field distribution between the perovskite layer and the electron transport layer is significantly improved, the separation and transport of carriers are promoted, and non-radiative recombination is inhibited. Amino groups and thiourea groups in S-(2-aminoethyl) isothiourea bromine onium hydrobromide molecules can form stable coordinate bonds with uncoordinated lead ions on the surface of perovskite, so that the S-(2-aminoethyl) isothiourea bromine onium hydrobromide molecules are effectively anchored on the surface. Meanwhile, bromine ions in the S-(2-aminoethyl) isothiourea bromide onium hydrobromide can fill halogen vacancies in perovskite crystal lattices, so that the defect density is further reduced. And the interface characteristic between the perovskite and the electron transport layer is obviously improved, so that the photoelectric conversion efficiency and the stability of the cell are improved.

The invention provides a carbon-based perovskite solar cell and a preparation method thereof. The method comprises a step of preparing a laminated structure, the laminated structure comprises a transparent conductive substrate, and an electron transport layer, a mesoporous layer, a perovskite active layer and a carbon electrode layer which are sequentially laminated on the surface of the transparent conductive substrate, and the carbon electrode layer comprises a main body layer part and an electrode part. The main body layer part is arranged on the surface of the side, away from the transparent conductive substrate, of the perovskite active layer, the electrode part is arranged on the transparent conductive substrate and makes contact with the electron transport layer, the mesoporous layer and the perovskite active layer, and the surface of the side, away from the transparent conductive substrate, of the electrode part is flush with the surface of the side, away from the transparent conductive substrate, of the main body layer part. After the step of preparing the laminated structure, the preparation method comprises the following steps: applying a pressure perpendicular to the laminated structure to the laminated structure and simultaneously carrying out annealing treatment to obtain the carbon-based perovskite solar cell. By adopting the method provided by the invention, the stability of the carbon-based perovskite solar cell can be remarkably improved.

The present invention relates to a metal complex having a structure of chemical formula (I). The metal complex is applied to an organic light-emitting device which emits deep red or near-infrared light, and shows a lower driving voltage and higher luminous efficiency, and has greatly prolonged service life. Therefore, the metal complex has the potential of being applied in the field of organic light-emitting devices. Also provided is an organic light-emitting device, including a cathode, an anode, and an organic layer. The organic layer is one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer; and at least one layer in the organic layer contains the compound of structural formula (I).

The invention belongs to the technical field of photoelectric materials, and relates to an OLED device containing a polydopamine modified carbon nanotube and a preparation method of the OLED device. The anode electrode layer is formed on the substrate; the organic light-emitting unit is formed on the anode electrode layer, the organic light-emitting unit sequentially comprises a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer and an electron injection layer from bottom to top, and the light-emitting layer is made of a composite material containing polydopamine modified carbon nanotubes; and the cathode electrode layer is formed on the organic light-emitting unit. The polydopamine modification is functional modification, and solves the problems of poor dispersibility and interface cohesiveness of the traditional carbon nanotubes in the OLED device, thereby improving the photoelectric properties of the OLED device.

The invention relates to the technical field of electroluminescence, and discloses a laminated organic light-emitting device and application thereof, and the laminated organic light-emitting device comprises an anode layer, a first light-emitting unit, an electron transport layer, an interface modification layer, a connection layer, a second light-emitting unit and a cathode layer which are sequentially arranged from bottom to top; the electron transport layer comprises a hole blocking layer and an n-type electron transport layer; wherein the n-type electron transport layer is composed of an n-type dopant and an organic electron transport material, has the functions of electron transport, charge separation and injection and regulation and control of the optical microcavity effect of the laminated device, can simplify the electron transport and connection layer structure of the laminated device, and effectively improves the conductivity of the laminated device; according to the laminated organic light-emitting device, the voltage drop of the body is obviously reduced, and the interface electron injection barrier is reduced, so that the laminated organic light-emitting device has the advantages of low driving voltage, high efficiency and long service life, and the effect of adjusting the optical microcavity of the device can be achieved by utilizing the n-type electron transport layer.

The invention discloses a fullerene pyrrolidine derivative as well as a preparation method and application thereof, and relates to the field of photoelectric functional materials. The structural general formula of the fullerene pyrrolidine derivative is # imgabs0, and fullerene, amino acids with different carbon chain lengths and aromatic aldehyde are subjected to Prato reaction to generate the fullerene pyrrolidine derivative. The fullerene pyrrolidine derivative provided by the invention is used as an electron transport layer material, can significantly improve the performance of a photoelectric device, has excellent chemical stability and environmental adaptability, and greatly enhances the stability of the device. In addition, the preparation method of the fullerene pyrrolidine derivative is simple, convenient and efficient, the operation condition is mild, and the manufacturing cost of a device is reduced.

A nitride semiconductor device includes a nitride semiconductor layer including a first superlattice buffer layer, a second superlattice buffer layer formed above the first superlattice buffer layer, an electron transit layer formed above the second superlattice buffer layer and composed of a first nitride semiconductor, and an electron supply layer formed above the electron transit layer and composed of a second nitride semiconductor. The first superlattice buffer layer has a first superlattice structure including a first layer and a second layer alternately arranged. The first layer is composed of AlxGa1−xN, where 0<x<1. The second layer is composed of GaN. The second superlattice buffer layer has a second superlattice structure including a third layer and a fourth layer alternately arranged. The third layer is composed of AlyGa1−yN, where 0<y<x. The fourth layer is composed of GaN.

The invention provides a preparation method of an organic electron transport layer and a preparation method of a perovskite solar cell. The perovskite solar cell structurally comprises an anode, a hole transport layer, a perovskite layer, the organic electron transport layer, a cathode modification layer and a cathode from bottom to top. According to the preparation method of the organic electron transport layer, an n-type small organic molecule CY4 solution is dissolved in a PCBM solution according to a certain proportion, chlorobenzene (CB) is adopted as a solution solvent, the perovskite layer is spin-coated with the solution solvent after stirring, a high-quality organic electron transport layer film is formed, and it is measured that the photoelectric conversion efficiency of a final device is 19.80%. A series of characterization results show that the CY4-doped organic electron transport layer improves the electron extraction capability between layers and inhibits carrier recombination; and meanwhile, the roughness of the PCBM film is also reduced, and the formed organic electron transport layer film more uniformly covers the perovskite layer, so that the efficiency of the cell and the environmental stability are greatly improved finally.

The invention discloses an efficient and stable perovskite solar cell prepared based on modified lead iodide and a preparation method thereof, and belongs to the technical field of new energy manufacturing, the solar cell comprises an FTO substrate, and a TiO2 electron transport layer, a perovskite light absorption layer, a PEAI modification layer, a Spiro-OMeTAD hole transport layer and an Ag electrode are sequentially arranged on the conductive surface of the substrate. According to the method, the lead iodide is modified through the pentylamine acetic acid (PenAAc), the low-defect and high-quality perovskite thin film is prepared, so that high conversion efficiency is achieved, the whole process is simple in preparation, low in preparation cost and low in time cost, and the method can be widely applied to preparation of the perovskite solar cell through a two-step method.

The invention provides an organic electrochemical transistor regulated and controlled by a grating electrode and a preparation method of the organic electrochemical transistor, and belongs to the technical field of photoelectric detection and organic electrochemical transistors. The organic electrochemical transistor comprises a transparent substrate, a detector anode, a hole transport layer, a photosensitive layer, a semiconductor active layer, an electron transport layer, a detector cathode, a packaging layer, a transistor grid electrode, a transistor source electrode, a transistor drain electrode and an electrolyte. A QPD and an OECT are integrated above the transparent substrate. The invention also provides a preparation method of the organic electrochemical transistor. Through the illumination effect, the photo-generated voltage generated by the QPD serves as a grid regulation and control signal, and higher current variation for different illumination intensities is achieved. The preparation process is remarkably simplified, the responsivity, the detectivity and the linear dynamic range of the device are improved, the stability and the low power consumption characteristic are improved, and a new solution is provided for application of a photoelectric-electrochemical fusion device in the fields of flexible electronics, wearable detection, biosensing and the like.

The invention discloses a perovskite solar cell based on co-self-assembly molecule-induced interface in-situ polymerization and a preparation method thereof. The perovskite solar cell comprises a nickel oxide layer, a co-self-assembly layer, an in-situ polymer layer, a perovskite layer, a passivation layer, an electron transport layer and a top electrode which are sequentially arranged on the surface of a substrate, wherein the in-situ polymer layer is arranged between the co-self-assembly layer and the perovskite layer, the co-self-assembly layer comprises co-self-assembly molecules, and the co-self-assembly molecules are formed by mixing first self-assembly molecules and second self-assembly molecules with sulfydryl at the tail end; a perovskite layer precursor solution for preparing the perovskite layer comprises ionic liquid, and the cation part of the ionic liquid contains end groups of carbon-carbon double bonds. Based on dual mechanisms of co-self-assembly molecules and in-situ polymerization, the defects of a perovskite buried interface can be effectively passivated, interface contact is enhanced, and the photoelectric conversion efficiency and long-term stability of the perovskite cell can be remarkably improved.

To provide a novel light-emitting device, a light-emitting device with excellent luminous efficiency, a light-emitting device with excellent lifetime, or a light-emitting device with a low driving voltage.SOLUTION: A light-emitting device includes an anode, a cathode, and an EL layer present between the anode and the cathode. The EL layer has a light-emitting layer and an electron transport layer. The electron transport layer is present between the light-emitting layer and the cathode. The electron transport layer includes an electron transport material. The electron transport material is an organic compound having a first skeleton, a second skeleton, and a third skeleton. The first skeleton has a function of transporting electrons. The second skeleton has a function of accepting holes. The third skeleton has a single ring and a heterocyclic aromatic ring that is π electron deficient type.SELECTED DRAWING: Figure 1

A preparation method of a perovskite solar cell based on nicotinamide derivative material passivation relates to the technical field of solar cells, and the cell is of a P-I-N structure and sequentially comprises a transparent conductive substrate, 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. The invention provides a nicotinamide derivative material for the interface modification layer, the nicotinamide derivative material comprises 2-amino nicotinamide and 6-amino nicotinamide, and an isopropanol solution containing 2-amino nicotinamide and 6-amino nicotinamide is used for carrying out synergistic passivation treatment on the perovskite light absorption layer to prepare the interface modification layer. The defects on the surface of the perovskite thin film are reduced, the quality of the perovskite thin film is improved, carrier transport is promoted, and non-radiative recombination is effectively inhibited, so that the photoelectric conversion efficiency of the perovskite solar cell is improved.

A nitride semiconductor device includes: an electron transit layer; an electron supply layer that is formed on the electron transit layer and that has a band gap which is larger than that of the electron transit layer; a dielectric layer that is formed on the electron supply layer; and an electrode that has a contact part which is in electrical contact with the electron supply layer via at least an opening passing through the dielectric layer. The contact part has: an inclined surface that is inclined so as to decrease in width toward the electron transit layer; a tip surface that is in contact with the bottom face of the opening; and a curved surface that is provided between the tip surface and the inclined surface and that is curved so as to protrude toward the electron transit layer.

An organic light emitting device (OLED) comprising, sequentially an anode; a hole transporting layer; an emissive region; an electron transporting layer; and a cathode is provided. In the OLED, the emissive region comprises a compound S1 and a compound A1, where the compound S1 is an organometallic sensitizer that transfers energy to the compound A1, and the compound A1 is an acceptor that is an emitter; the compound A1 has an emission onset greater than 750 nm; and the PLQY of the emissive region comprising both compound S1 and compound A1 is greater than the PLQY of an equivalent emissive region without compound A1. Consumer products containing the OLED are also provided.

Disclosed are a perovskite solar cell and a preparation method therefor. The perovskite solar cell comprises a perovskite layer (3), a passivation layer (4), and an electron transport layer (5). The passivation layer (4) is located between the perovskite layer (3) and the electron transport layer (5), and the passivation layer (4) comprises a composite material formed from a polydopamine cross-linked modified layered bimetallic hydroxide compound. By means of selecting the composite material as the material of the passivation layer, the defect passivation effect at the interface of the perovskite layer (3) is good, and the electron extraction and transfer capabilities are improved.

The invention belongs to the technical field of perovskite solar cells, and particularly relates to a preparation method for improving the quality of a perovskite thin film by using a local high-temperature field, and the method comprises the steps: 1, forming a perovskite precursor thin film on an electron transmission layer; step 2, when the precursor film is in an intermediate phase or an incompletely crystallized state, placing the precursor film below a heating plate with a microstructure array, keeping a gap between a convex part of the microstructure array and the surface of the precursor film, and forming a periodically distributed local high-temperature field on the surface of the precursor film; step 3, maintaining the local high-temperature field to act for a period of time, so that the local area of the precursor film is preferentially crystallized; and 4, removing the heating plate, and uniformly annealing the precursor film. According to the method, a local high-temperature field is applied to induce a hot spot region to preferentially nucleate, abnormal growth and Ostwald ripening of crystal grains are inhibited, and the large-area uniform perovskite thin film with narrow crystal grain size distribution, low defect density and a flat film surface is obtained, so that the efficiency and consistency of a device are improved.

A solar cell and a method for preparation the solar cell are provided. The solar cell includes a semiconductor substrate, a hole transport layer and an electronic transport layer, a first passivation layer and a second passivation layer. The semiconductor substrate includes a first surface and a second surface opposite to each other. The hole transport layer and the electronic transport layer are disposed on the first surface at interval. A material of the hole transport layer includes vanadium oxide, and a material of the electronic transport layer includes titanium oxide. The first passivation layer is located on a surface of the hole transport layer away from the semiconductor substrate. A surface of the first passivation layer away from the semiconductor substrate, a surface of the electronic transport layer away from the semiconductor substrate, and the first surface are all covered by the second passivation layer.