475 results about "Polymer solar cell" patented technology

Embodiments provide a composite material with oriented nanotubes and a method for making the composite material. The composite material can be formed by distributing a plurality of nanotubes in a polymer matrix. The nanotubes can be further magnetically oriented during the formation of the polymeric matrix, while the polymer matrix is magnetically annealed. The composite material can provide enhanced mechanical and electrical properties, and effective radiation resistance against high-energy ionizing radiation particles and/or electromagnetic interferences. The composite material can be useful for lightweight armors incorporated into vehicles, aircrafts or personnel protection with high ballistic properties, and efficient dissipation of radiation energies, photovoltaic cells with improved polymer solar cell efficiency, improved light emitting diodes (LEDs) with controllable optical properties, or infrared screening devices with increased extinction coefficient.

The present invention relates to silico fluorene copolymer and its application. The silico fluorene copolymer is copolymer of 2, 7-silico fluorine and narrow band gap monomer, and has absorption spectrum with absorption side band greater than 500 nm and absorption band side expanded to red light and near infrared region. It is prepared through copolymerizing 2, 7-silico fluorine and narrow band gap monomer containing hetero N and/or S atoms. It may be applied in making polymer solar cell, FET, etc. It has high mobility, high long-term stability and high energy converting efficiency.

The invention relates to a copolymer of bithiophene diazosulfide and dibenzothiophene (BDT) and application thereof. 4,7-bithiophene-5,6-dioctyloxy-diazosulfide (DODTBT) and a di-tin compound of the BDT are coupled through Stille to obtain poly-[2,6-(4',8'-di-iso-octyl-benzene-(1',2'-b;3',4'-b)-bithiophene)-CO-4,7-bithiophene-5,6-dioctyloxy-diazosulfide (PBDT-DODTBT). The polymer has good photoelectric conversion function and can be widely applied to polymer solar cells. Particularly, the PBDT-DODTBT is used as a donor material and mixed with a C60 receptor, and an obtained mixture is coated on ITO (Indium Tin Oxid) conducting glass to prepare a semitransparent thin film; and then a metal electrode is evaporated on the polymer through a vacuum evaporation mode to prepare a polymer solar cell device, wherein the preliminary survey energy conversion efficiency (PCE) of the device reaches 4.02 percent.

The invention relates to a polymer solar cell, which includes a transparent electrode, a donor material, an active layer material, a receptor material and a metal electrode, wherein a transparent base body which is covered by ITO (Indium Tin Oxide), FTO (Flouride-doped Tin Oxide), ATO (Arsenic Trioxide), graphene, carbon nanotubes or a conjugated polymer thin film is used by the transparent electrode; a nano composite material of conjugated polymer, a metal nanomaterial and a semiconductor quantum point nano material is adopted as the donor material; the active layer material is a nano composite material of conjugated polymer, graphene, carbon nanotubes or fullerene and derivatives thereof in the presence of a modifier; graphene, carbon nanotubes or fullerene and the derivatives thereof are adopted as the receptor material; and the metal electrode is made of silver paste, aluminum paste, silver aluminum paste or metal paste. The donor material, the active layer material, the receptor material and the metal paste are printed on the transparent electrode by using an ink printing machine in sequence, and are subjected to drying treatment at 50-100 DEG C in sequence to obtain the polymer solar cell. The cell has high utilization rate to sunshine, high carrier mobility, high compatibility of donor and receptor, high photoelectric conversion efficiency, simple and convenient preparation process and capability of realizing large-scale industrial application.

The invention discloses a narrow-band-gap n-type polymer acceptor and a preparation method and application thereof. A structural formula of the polymer is shown as a formula I, a copolymerization unit 1 in the formula I is an A-D-A type molecule unit, the D is an aromatic condensed ring unit, the A is an electron deficiency acceptor unit, and a copolymerization unit 2 in the formula I is a conjugation aromatic ring unit. A narrow-band-gap n-type polymer material disclosed by the invention has good material film forming property, higher molar absorption coefficient, higher thermal stability, better charge transfer performance and appropriate electronic energy level, can serve as an electron acceptor material to be matched with a p-type electron donor polymer and can be applied to a full-polymer solar cell device. (The formula I is shown in the description.).

A method of manufacturing a polymer composite film for an active layer of a photovoltaic cell according to an embodiment of this invention includes providing a quantity of a solution of a polymer matrix material, mixing a quantity of a guest material with the quantity of the solution of polymer matrix material to form a blend of active material, and controlling a growth rate of the polymer composite film to control an amount of self-organization of polymer chains in the polymer matrix material. A polymer composite film for an active layer of a photovoltaic cell is produced according to this method.

A high electron mobility transistor (HEMT) capable of performing as a CO₂ or O₂ sensor is disclosed, hi one implementation, a polymer solar cell can be connected to the HEMT for use in an infrared detection system. In a second implementation, a selective recognition layer can be provided on a gate region of the HEMT. For carbon dioxide sensing, the selective recognition layer can be, in one example, PEI/starch. For oxygen sensing, the selective recognition layer can be, in one example, indium zinc oxide (IZO). In one application, the HEMTs can be used for the detection of carbon dioxide and oxygen in exhaled breath or blood.

Two methods to achieve a tandem solar cell are disclosed. The first involves stacking together two or more complete polymer solar cells, each having a polymer blend active layer. The individual solar cells can be connected either in series or in parallel. In the second method, two individual polymer solar cells are first constructed and then laminated together to form a tandem structure. The lamination can be metal-free, thus resulting in translucent polymer solar cells.

The invention belongs to the technical field of polymer solar cells and particularly relates to a reciprocal form electrode polymer solar cell using TiO2 as an electronic transmission layer, CuPc as a cavity transmission layer and a preparation method thereof. The method includes the steps of: using sol-gel technology to grow a layer of uniform and compact nanocrystal titanium dioxide (TiO2) film on an ITO glass substrate, then spin-coating a layer of P3HT:PCBM solution dissolved by dichlorobenzene, after annealing, using thermal evaporation to grow a layer of CuPc with certain thickness and finally evaporating Au electrode. The polymer solar cell prepared by utilizing the method solves two problems of the traditional polymer solar cell, namely that the mixed solution of 3, 4-EDOT and polystyrolsulfon acid corrode the surface of ITO glass, and the excessive thinness of cathode buffer layer LiF causes the operating process to be difficult to be controlled accurately.

A polymer solar cell has an anode, cathode and an active layer. The anode has a surface area larger than the cathode. On the anode, in the area with no cathode, is a conducting element in electrical contact with the anode, having a higher conductivity than the anode and substantially surrounding the cathode in order to minimize the distance between any two points on the cathode and the conducting element. The conducting element allows electrons to travel a shorter distance in the anode and through a higher conducting path to an electrical contact.

The invention provides a two-dimensional conjugated polymer as shown in a formula (I). The invention also provides a polymer-containing semi-conductor blend, a preparation method of the polymer and an application of the polymer in organic photoelectric fields such as polymer solar cells and polymer field-effect tubes. The energy conversion efficiency of the two-dimensional conjugated polymer provided by the invention is greatly improved, so that the application of the two-dimensional conjugated polymer in the organic photoelectric fields is expanded.

The invention provides a tandem polymer solar cell with a parallel structure. In the solar cell, metals with a high work function such as gold and sliver are taken as a semitransparent anode to extract holes. A p-type metal oxide molybdenum trioxide or tungsten oxide is taken as a hole transport layer at two sides of the anode for connecting an upper sub-cell photosensitive layer and a lower sub-cell photosensitive layer so as to construct a built-in electric field and improve the collection efficiency of a current carrier. The photosensitive layers of an upper sub-cell and a lower sub-cell in the tandem cell are respectively a mixture consisting of a conjugated polymer and a fullerene derivative with different absorption ranges. The two sub-cells are connected in parallel, and short circuit current density of the tandem solar cell is the sum of the short circuit current density of the upper sub-cell and the short circuit current density of the lower sub-cell. By conjugated polymers with the different absorption ranges, the tandem polymer thin film solar cell effectively improves the active sunlight absorption and realizes that the short circuit current is effectively increased to 15 milliampere/square centimeter, thus increasing the maximum energy conversion efficiency of the polymer thin film solar cell to 3.36%.

A polymer based solar cell having an inverted geometry includes a transparent cathode and a double interlayer that has a hole extracting layer and a hole transport/electron blocking layer situated between an active layer, for example, a bulk heterojunction (BHJ) layer, and an anode. The inverted solar cells according to embodiments of the invention display significant efficiency improvements over polymer based solar cells that do not have the inverted geometry and lack the double interlayer.

The invention provides a block conjugated polymer used for preparing a high-efficiency organic photovoltaic device, and a preparation method thereof. The block conjugated polymer has a structure shown in a formula I, wherein Ar represents an aromatic ring unit, with the aromatic structure of benzene, thiophene, fluorene, carbazole, silicon-aromatic heterocyclic ring or thiazole heterocyclic ring, of a main polymer chain; R1 and R2 are substitution radicals of [1,2,5]thiadiazole[3,4-g]quinoxaline and diazosulfide respectively, and each of R1 and R2 has one of the structures of hydrogen atom, saturated alkane, double-bond alkane, triple-bond alkane, ether-oxygen chain, alkyl-chain amine and sulphydryl; m and n are numbers of structure-repeated units of the main polymer chain; the summation of m and n is an integer more than or equal to 4; and m is more than or equal to 0, while n is more than or equal to 0. The polymer has the characteristics of better matching with solar spectrums, steric hindrance reduction, crystallization property improvement, and vast application prospect on photoelectric functional devices, particularly on polymer solar cells.

The invention belongs to the technical field of perovskite solar cells, and particularly relates to a plane heterojunction perovskite solar cell capable of being processed through solutions and a manufacturing method of the solar cell. A cathode decoration layer in the plane heterojunction perovskite solar cell is made of metal acetylacetone chelate membrane materials. The metal acetylacetone chelate is introduced into the solar cell to selectively collect electrons so as to prevent a cavity, the metal acetylacetone chelate is in ohmic contact with an active layer, the open-circuit voltage of the cell reaches the optimal value, the current and fill factors are correspondingly improved, the optical separation effect is achieved, the internal photoelectric field is redistributed, and therefore light absorption is enhanced, and the excellent performance is achieved in polymer solar cells. The manufacturing method of the perovskite solar cell has the advantages of being simple in process, low in cost, good in experimental repeatability, suitable for large-scale industrial production and the like.

Fullerene surfactant compounds useful as interfacial layer in polymer solar cells to enhance solar cell efficiency. Polymer solar cell including a fullerene surfactant-containing interfacial layer intermediate cathode and active layer.

The invention discloses a large-area polymer solar cell and a method for preparing an active layer of the large-area polymer solar cell to solve the technical problems that in the prior art, an active layer prepared through a spin coating process is small in area, can not meet the preparation requirements for a large-area cell module and a series-connection module, and is not suitable for industrial production, and belongs to the technical field of solar cells. The method includes the steps of firstly, dissolving electron donor materials and electron acceptor materials in organic solvents, conducting heating and stirring, and obtaining an evenly-mixed solution; secondly, adding additives to the mixed solution, and obtaining spraying ink of the active layer; thirdly, adding the spraying ink to an ultrasonic spraying instrument, and obtaining the active layer of the polymer solar cell in the spraying process through in-situ atmosphere processing. By means of the method, the active layer of the large-area polymer solar cell can be prepared in the atmosphere environment, and it is ensured that the active layer of the large-area polymer solar cell has high photovoltaic conversion efficiency.

Disclosed are methods of using magnetic or electric fields to align magnetically responsive nanoparticles in a polymeric matrix, which has not yet been completely solidified. The nanoparticles are preferably magnetically doped, then blended with photovoltaic polymer material to form devices. The methods provided are particularly useful for the formation of solar cell devices. The devices include nanostructured electron-conducting channels arranged approximately parallel to one another, where the channels comprise magnetically doped materials, as well as photovoltaic materials interspersed with the nanostructured electron-conducting channels. The method provides a way to control the morphology of blended photovoltaic devices, which will improve efficiencies. In addition, the new method provides a way to control the growth of novel, cheap, solar cells, which can in turn lead to enhanced performance.

The invention relates to an inverse type polymer solar cell based on modification of an active layer and a transmission layer, and belongs to the technical field of polymer solar cells. The polymer solar cell is of a typical inverse structure. UV processing and hydroxylation are carried out on a titanium dioxide electron transmission layer, and polyethylene imine modification is then carried out; an active layer is doped with inorganic quantum dots to further adjust the energy level among acceptors and enhance transmission of carriers; and a hole transmission layer employs water-soluble molybdenum trioxide, and doped with gold nano-particles. Spin coating of aqueous solution saves more energy compared with vapor deposition; surface plasmon resonance caused by doping of the gold nano-particles can reflect light back to an active layer, further to utilize light and help transmission of charges in a transmission layer; and carrier transmission is smoother, and a more balanced electro-hole transfer speed can be achieved.

The invention discloses a three-terminal parallel polymer solar cell based on metal nanoparticle doping and a preparation method of the solar cell, and belongs to the technical field of polymer solar cells. The solar cell sequentially consists of ITO (Indium Tin Oxide) conductive glass serving as a substrate and a cathode, a TiO2 electronic transmission layer, a PSBTBT:PC70BM:NPs active layer, an MoO3 hole transmission layer, an Ag anode, a WO3 hole transmission layer, a P3HT:PC70BM:NPs active layer, an LiF electronic transmission layer and an Al cathode, wherein a mass ratio of the P3HT:PC70BM:NPs active layer is 1:1:(0.02-0.05), and NPs represents Au or Ag nanoparticles. According to the solar cell and the preparation method, two subcells form a parallel structure, light absorbing ranges of active layers of the subcells are complementary, metal nanoparticles are doped in the active layer of each subcell, and a utilization ratio of sunlight by the solar cell is increased by utilizing a plasma enhancement effect nearby the metal nanoparticles, so that the performance of the solar cell is improved.

The invention discloses a fluorene copolymer and a preparation method, application and a polymer solar cell device thereof. The copolymer is prepared from raw materials of 2,7-fluorene monomers, thiophene monomers and diazosulfide monomers by performing Suzuki polymerization reaction under the action of a catalyst and alkali. The fluorene copolymer can be applied to the manufacturing of polymer solar cells, organic electroluminescent devices, organic field-effect transistors, organic optical memory devices, organic nonlinear materials or organic laser devices. The polymer solar cell device comprises a glass layer, an ITO layer, a PEDOT:PSS composite layer, an active layer and an Al layer, wherein the active layer comprises electron donor materials and electron acceptor materials of the fluorene copolymer. The fluorene copolymer and the application thereof have the advantages of relatively wide spectral response, relatively high stability, better match with solar radio spectrum and high photoelectric conversion efficiency.

The invention discloses a water/alcohol-soluble non-conjugated polymer interface material, an organic solar cell device and a preparation method thereof, and belongs to the field of organic/polymeric photovoltaic technologies. Specifically, polyvinyl pyridine and a derivative thereof are applied to an organic/polymeric solar cell as a cathode interface modification layer. Water/alcohol soluble polyvinyl pyridine and the derivative thereof are made between the active layer and the cathode of a normal or inverted organic/polymeric photovoltaic device through solution processing, and therefore, the filling factor, open-circuit voltage and energy conversion efficiency of the organic/polymer solar cell are improved. Based on the application of polyvinyl pyridine and the derivative thereof, an organic/polymeric solar cell device with high photovoltaic performance can be obtained.