1834 results about "Organic solar cell" patented technology

An organic device has a hole current-electron current conversion layer which comprises a laminate of an electron transportation section and a hole transportation section. The electron transportation section includes a charge transfer complex formed upon an oxidation-reduction reaction between a reduced low work function metal and an electron-accepting organic compound, the reduced metal being produced upon an in-situ thermal reduction reaction caused upon contact, through lamination or mixing by co-deposition, of an organic metal complex compound or an inorganic compound containing at least one metal ion selected from ions of low work function metals having a work function of not more than 4.0 eV, and a thermally reducible metal capable of reducing a metal ion contained in the organic metal complex compound or the inorganic compound in vacuum to the corresponding metal state, and the electron transportation section having the electron-accepting organic compound in the state of radical anions. The hole transportation section includes an organic compound having an ionization potential of less than 5.7 eV and an electron-donating property and an inorganic or organic substance capable of forming a charge transfer complex upon its oxidation-reduction reaction with the organic compound, the organic compound and the inorganic or organic substance being contacted through lamination or mixing, and the electron-donating organic compound is in the state of radical cations.

An organic device, including an organic compound having charge-transporting ability (i.e., transporting holes and/or electrons) and/or including organic light emissive molecules capable of emitting at least one of fluorescent light or phosphorescent light, has a charge transfer complex-contained layer including a charge transfer complex formed upon contact of an organic hole-transporting compound and molybdenum trioxide via a manner of lamination or mixing thereof, so that the organic hole-transporting compound is in a state of radical cation (i.e., positively charged species) in the charge transfer complex-contained layer.

The present invention generally relates to organic photosensitive optoelectronic devices. More specifically, it is directed to organic photovoltaic devices, e.g., organic solar cells. Further, it is directed to an optimized organic solar cell comprising multiple stacked subcells in series. High power conversion efficiency are achieved by fabrication of a photovoltaic cell comprising multiple stacked subcells with thickness optimization and employing an electron blocking layer.

A bistable electrical device (50) employing a bistable body (52) and a high conductivity material (54). A sufficient amount of high conductivity material (54) is included in the bistable body (52) to impart bistable between a low resistance state and a high resistance state by application of an electrical voltage (60).

The invention relates to A-D-A conjugated molecules by taking hepta-condensed ring units as cores and oligomerized five-membered aromatic rings as bridging units, wherein the tail ends are electron withdrawing units, a preparation method for the A-D-A conjugated molecules and an application of the molecules as active layer electron donors or electron acceptor materials in organic solar batteries (OPV). The A-D-A conjugated molecules based on hepta-condensed ring units can be processed by a solution method, have a proper energy level and have a relatively good sunlight capturing ability and heat stability, so that the molecules are an ideal material for the electron donors or electron acceptors in the organic solar batteries. The molecules have the structure as shown in the formula.

The invention relates to an A-D-A conjugated molecule with dithiophene indacene as a core, and oligomerizing pentatomic aromatic heterocyclic rings as a bridging unit and electron withdrawing unit at the end, a preparation method thereof and an application of the molecule, as an active-layer electron donor or electron receptor material, in an organic solar battery. The A-D-A conjugated molecule can be processed by a solution method, has proper energy level, strong sunlight trapping capability and thermal stability, is an ideal material of the electron donor or the electron receptor in the organic solar battery, and has the following general-formula structure shown in the specification.

A system and methodology are disclosed for forming a passive layer on a conductive layer, such as can be done during fabrication of an organic memory cell, which generally mitigates drawbacks inherent in conventional inorganic memory devices. The passive layer includes a conductivity facilitating compound, such as copper sulfide (Cu₂S), which is generated from an upper portion of a conductive material. The conductive material can serve as a bottom electrode in the memory cell, and the upper portion of the conductive material can be transformed into the passive layer via treatment with a plasma generated from fluorine (F) based gases.

The invention discloses a polycyclic benzothiadiazole non-fullerene acceptor material, a preparation method thereof and an application of the material. The polycyclic benzothiadiazole non-fullerene acceptor material comprises a polycyclic benzothiadiazole center core and electrophilic end groups, the polycyclic benzothiadiazole center core is of a nitrogen bridge trapezoidal polycyclic structure,the electrophilic end groups are connected to two ends of the center core, 4, 7-dibromo-5, 6-binitro benzothiadiazole serves as a raw material in the preparation process, Stille coupling and Vilsmeier-Haack reaction are sequentially performed to obtain the polycyclic benzothiadiazole center core, and end-group structures are introduced by Knoevenagel reaction to obtain the polycyclic benzothiadiazole non-fullerene acceptor material. The acceptor material is good in solubility and easily processed into a film, has a good photoelectric conversion function and is used for preparing an organic solar battery device, and photoelectric conversion efficiency reaches nearly 16% of single battery conversion efficiency.

The invention belongs to the technical field of organic luminescence materials. The gathering luminescence material of the invention contains a triphenyl thylene structure, ketone carbonyl is converted into double bonds by substituent phenyl ketone through a Wittig reaction or a Wittig-Horner reaction during synthesis, and the triphenyl thylene structure is formed and then is connected with otheraromatic base groups. The synthesis method has simple technique and easy purification, and the synthesized organic luminescence material containing the triphenyl thylene structure not only has obvious gathering induced luminescence performance, high thermal stability, high vitrifaction transformation temperature and high luminescence intensity, but also is suitable for preparing a luminescence layer material in an organic electroluminescence material component; by introducing proper base groups, and the organic luminescence material also can be used as a fluorescent probe and organic solar battery sensitizing dyestuff.

The invention provides an application of crosslinkable conjugated polymer materials in a flip organic photoelectric device. The conjugated polymer materials possess a conjugated main chain and functionalized side chain groups, wherein the functionalized side chain groups comprise a crosslinkable substituent group and a strong polar group possessing water alcohol solubility. Under the condition ofillumination or heating, the conjugated polymer materials can be processed to be insoluble and nonfusible interpenetrating polymer networks through using a strong polar solvent. When constructing a multilayer device, an interface miscibility phenomenon between layers can be overcome. The interpenetrating polymer networks can be regarded as materials of an electron injecting layer or an electron transmission layer to prepare a flip organic electroluminescent device or a flip organic solar cell device. The electron can be directly injected or extracted from a high work function transparency electrode. By using the crosslinkable conjugated polymer materials, processes of the flip organic electroluminescent device and the flip organic solar cell device can be simplified, and an object of preparing the efficient organic photoelectric device by using a low cost technology can be realized.

The invention provides a photochromic device which changes color along with variation of solar ray intensity. An external electric field which controls color change is provided through an organic solar battery which is integrated in the same device. The photochromic device comprises a transparent non-conductive substrate, a transparent conducting layer, an organic solar battery material layer, an electrochromic material layer and an electrolyte layer, wherein the organic solar battery material layer at least comprises a positive layer, a negative layer and an organic photovoltaic conversion material layer. According to the photochromic device, electric power generated through photoelectric effects of the organic solar battery can provide electric power for the electrochromic layer and change of device color is automatically controlled through a light activated switch according to intensity of solar light. The photochromic device has the advantages of operating without additional power supply, being more energy saving and greatly reducing manufacturing costs due to the fact that external circuits are greatly simplified.

An antenna layer is provided separate from an active layer in a solar cell device based on organic materials, enabling improved energy conversion in the solar cell devices by increasing the efficiency and spectral cross-section for the capture of incident light. The antenna layer may be anthracene or an anthracene derivative, for example. The antenna layer is operable to harvest light and transfer captured excitation energy to the active layer of the solar cell device using an energy transfer mechanism, wherein the charge separation and/or the formation of free carriers takes place. The antenna layer also limits the ultraviolet exposure of the active layer thus extending the operating life of the solar cell. The active layer and the antenna layer of a solar cell device may be independently optimized such that there is an increased spectral range and/or cross-section of light absorption and thus a higher photovoltaic efficiency.

The invention discloses a preparation method for a pine-needle-shaped carbon nanotube/carbon fiber conductive network composite carbon material. The preparation method comprises taking fiber of carbon fiber fabric as a growth substrate, and growing carbon nanotubes arranged in high density on the growth substrate. The carbon nanotubes arranged in high density on the growth substrate and the carbon fiber substrate together form the three-dimensional porous pine-needle-shaped carbon nanotube/carbon fiber conductive network composite carbon material. The material is an ideal material for loading an active substance or reaction substance because of possessed high specific surface area, and is capable of inhibiting structure damage caused during reaction because of excellent mechanical strength. Also, because of intersection or overlapping of carbon nanotube and carbon fiber, the integrity of the conductive framework of the composite material is facilitated to be improved, and the composite material possesses wide application prospect in fields of fuel batteries, supercapacitors, lithium-air batteries, lithium-sulfur batteries, organic solar cells and the like.

The invention discloses a method for preparing a stable transparent electrode provided with a neutral PEDOT/PSS conducting layer. The transparent electrode comprises a transparent base material layer and the conducting layer covering the transparent base material layer, wherein the conducting layer comprises a coated first silver nanowire conducting layer part and a second neutral PEDOT/PSS macromolecule conducting layer part or a macromolecule conducting layer part formed by mixing neutral PEDOT/PSS with silver nanowires, and the PEDOT/PSS macromolecule conducting layer part is made of neutral PEDOT/PSS conductive ink. The preparing method comprises the steps that 3,4-EDOT is polymerized into PEDOT/PSS dispersion liquid in the presence of PSS, alkaline additives are added to regulate the PH, neutral PEDOT/PSS dispersion liquid is obtained after the ink strength is high enough through the seasoning technology, and at least one kind of organic functional auxiliaries is added to the neutral PEDOT/PSS dispersion liquid to obtain the stable transparent electrode. The transparent electrode prepared with the method has the advantages of being high in conductivity, high in light permeability, simple in preparing technology, resistant to weather and current stability and the like and can be applied to the fields such as organic solar cells, organic light emitting diodes and touch display screens.

The invention belongs to the technical field of organic photoelectric devices, and particularly relates to a semitransparent inverse organic solar cell and a preparation method thereof. The semitransparent inverse organic solar cell device comprises a substrate, a transparent cathode, an organic photoelectric conversion layer and a transparent anode in turn, wherein the transparent anode adopts a multilayer structure and comprises an anode buffer layer, a metal thin layer and an anti-reflection film. By introducing the anti-reflection film, the energy conversion efficiency of the semitransparent inverse organic solar cell can be improved; and by changing the thickness of the anti-reflection film, the transmission spectrum of the transparent anode can be adjusted. The prepared semitransparent inverse organic solar cell has the characteristics of high efficiency and simple process.

The invention belongs to the technical field of organic photoelectric materials, and discloses a tetraphenylethylene-containing organic semiconductor material and a preparation method thereof, and application of the material in organic photoelectric devices. The tetraphenylethylene-containing organic semiconductor material is disclosed as Formula I or II, wherein R1, R2, R3, R4 and R5 can be identical or different aromatic ring derivative groups. Different modification groups can be connected to the tetraphenylethylene to regulate the electronic or hole transmission performance of the tetraphenylethylene derivatives, so that the organic semiconductor material not only can be used as a luminescent layer, but also can be used as a luminescent layer and current carrier transmission layer, thereby obtaining the electroluminescent devices with favorable photoelectric properties, simple structure and low cost; and the organic semiconductor material has wide application prospects in the fields of organic electroluminescence, organic field-effect transistors, organic solar cells and other organic electronics.

The invention belongs to the technical field of photoelectric devices, and discloses an organic-inorganic planar heterojunction solar cell prepared through solutions and a preparing method of the solutions. The solar cell comprises a substrate, an anode, an anode interface layer, a photoactivity layer, a cathode interface layer and a cathode which are all sequentially stacked, wherein the material of the photoactivity layer is an inorganic material which is soluble in a solvent and is of a perovskite structure, and performance of the material can be improved by adding polymer additives. The invention provides a planar heterojunction solar cell device with the photoactivity layer made of the perovskite organic-inorganic hybrid material capable of being prepared through the solutions, and according to the planar heterojunction solar cell device, the anode interface layer and the cathode interface layer are prepared through organic material solutions. According to the method, the problem that energy consumption is high in the cell device machining process is effectively solved, large-scale production is achieved, and high efficiency is achieved; the defects that in the prior art, the inorganic material needs to be machined at high temperature and the cost of the materials in the organic solar cell is high are overcome. The novel material and the new method can be applied to solar cells.

The present invention discloses a solution-processable organic molecule photovoltaic material based on two-dimensional conjugated benzodithiophene, a preparation method and an application thereof. According to the present invention, the molecules adopt thiophene substituted two-dimensional conjugated benzodithiophene as a core, both terminals are symmetrically connected with a thienylethene indene or bithienylethene indene conjugated structure unit, the structure formula is represented by a formula I, the molecules have good dissolubility in common organic solvents (such as dichloromethane, trichloromethane, tetrahydrofuran and the like), and the high-quality film can be prepared by using the solution method; compared with the polymer material, the material of the present invention is easy to purify, and the high purity material can be obtained; and the organic molecules are used for the donor material of organic solar cells, wherein the energy conversion efficiency is more than 6.5%. (Formula I).