96 results about "Polymer photovoltaics" patented technology

In one embodiment of the present disclosure, a series of conjugated polymers used, among other things, as polymer solar cell or polymer photovoltaic device active layer materials, is provided. In one embodiment, the conjugated polymers have the general structure and formula shown in (I), wherein: R1 and R2 are independently selected from proton, halogens, alkyls, aryls and substituted aryls; Ar is selected from the group consisting of monocyclic, bicyclic and polycyclic arylene, or monocyclic, bicyclic and polycyclic heteroarylene. In another embodiment, the conjugated photovoltaic polymers are comprised of repeated units having the general structure of formula (II), wherein, R1, R2, R3, R4, R5, and R6 are independently selected from proton, alkyls, halogens, aryls, substituted aryls, and other kinds of substituents. Synthesis methods of several polymers of the present disclosure are provided, and absorption spectra and electrochemical cyclic voltammetry data of some polymers, and also the photovoltaic properties of the polymers in this present disclosure are also provided.

High efficiency polymer photovoltaic cells have been fabricated using an optical spacer between the active layer and the electron-collecting electrode. Such cells exhibit approximately 50% enhancement in power conversion efficiency. The spacer layer increases the efficiency by modifying the spatial distribution of the light intensity inside the device, thereby creating more photogenerated charge carriers in the bulk heterojunction layer.

A tandem polymer photovoltaic device includes a first bulk hetero-junction polymer semiconductor layer, a second bulk hetero-junction polymer semiconductor layer spaced apart from the first bulk hetero-junction polymer semiconductor layer, and a metal-semiconductor layer between and in contact with the first and second bulk hetero junction polymer semiconductor layers. The first and second bulk hetero-junction polymer semiconductor layers have complementary photon absorption spectra.

A photovoltaic assembly including first and second substrates joined together and spaced apart, on either side of an airspace, by a seal system formed of a first seal and a second seal, the second seal comprising one or more silyl terminated polyacrylate polymers. A photovoltaic functional coating is disposed over a second major surface of one of the substrates, which faces the second major surface of the other substrate. Lead wires are coupled to bus bars and/or electrical contacts affixed to the functional coating and routed out from the airspace. Affixing the seal system to the first and second substrates, in order to join the substrates together, may be accomplished by applying pressure to the substrates.

A conjugated polymer containing boron and a preparation method and application thereof belong to the technical field of polymer photovoltaic cells. The technical problem of relatively low energy conversion efficiency of a polymer photovoltaic cell in the prior art is solved. According to the conjugated polymer containing boron provided by the invention, the structure is shown as a formula (I), a BNBP unit and a bridging unit (-Ar-) of the conjugated polymer contain multiple fluorine atoms, whereas the fluorine atoms have a very strong electron withdrawing property, which has a very big impact on LUMO energy level but a smaller impact on HOMO energy level, thus the band gap of the polymer narrows integrally, absorbs spectrum red shift, improves the light absorption power, and contributes to the light enrichment of the photovoltaic cell, and meanwhile, the fluorine atoms on a main chain of the polymer can improve the crystallization capacity of the polymer, thus enabling the polymer to have a relatively strong crystallization property, and further contributing to the realization of high electronic mobility of a material. The conjugated polymer containing boron provided by the invention is applicable to being used as an acceptor material of a high-performance polymer photovoltaic cell. The formula (I) is shown in the specification.

The invention belongs to the field of organic polymer functional materials and discloses an indenofluorene derivative based solar cell interface material. A structural formula I or II of the material is as shown in the specification. Due to introduction of a two-arm ester soluble fragment and an interface affinity unit to a main chain of the polymer, charge transferring between an active layer and a metal oxide layer can be effectively improved, and accordingly short-circuit current, open-circuit voltage and fill factors of polymer photovoltaic cells are promoted, and improvement of photoelectric conversion efficiency is realized.

The invention relates to a dithiophene pentalene-fluoroquinoxaline conjugated polymer the structure of which is as shown in a formula I. The polymer is prepared through Stille coupling reaction of a 2,6-di(trimethyltin)-4,4-di(2-ethylhexyl)-4-hydrogen-di-thiophene [3,2-b,2',3'-d] pentalane monomer serving as an electron donor unit and a di-bromine substituted fluoroquinoxaline monomer serving as an electron acceptor unit, and is used as a donor material of a bulk heterojunction solar cell. As for the polymer, a strong electron withdraw group fluorine atom is introduced to an electron-shortage unit quinoxaline to effectively reduce the HOMO energy level of the material, so that the open-circuit voltage of a polymer photovoltaic cell is improved.

The invention is concerned with the organic ultraviolet rays (UV) optical transducer bases on the phosphorescence material, belongs to the UV sensitivity optical transducer technique field, which applies the existed compound that is with the low ionized power (IP) and upper hole transmission specialty as the donor, and applies the phosphorescence compound that is with the high electron affinity (EA) and the bigger electron transmission specialty as the acceptor, to extend the choice of material availability; the device, with the simple making method of applying the multi-medium structure and the method of heat evaporation for filming with low cost; and so, having the device in small volume, low weight by applying the thin organic medium and the metal electrode layer; and because of the longer excited state life cycle , the exaction diffusion length of the phosphorescence, it is with higher efficiency than the organic polymer photovoltaic diode of the fluorescence material, not only represents on higher response sensitivity against the UV, just to the 300-400nm wave band UV and treats the visible light as the blind zone. The invention is available to use in the science, the industrial, and the commercial fields.

The invention discloses an inversion organic thin film solar cell decorated by a polar solvent and a preparing method of the inversion organic thin film solar cell and relates to the field of organic polymer photovoltaic devices or organic semiconductor thin film solar cells. An inversion structure is adopted in the solar cell. The solar cell comprises a substrate, a transparent conductive cathode ITO, a cathode buffer layer, a light active layer, an anode buffer layer, a polar solvent buffer layer and a metal anode. The polar solvent buffer layer is added to the portion between the anode buffer layer and the light active layer of the solar cell, the conductivity of the anode buffer layer can be effectively improved, the series resistance of devices is reduced, the carrier transporting efficiency is improved, and the photoelectric conversion efficiency of the solar cell is finally improved.

The invention discloses a novel polythiophene disperse system as well as a preparation method and application thereof, belonging to the field of chemical materials. The novel polythiophene disperse system consists of the following components in parts by mass: 0.01-1.00 part of 3,4-ethylene dioxythiophene, 0.04-14.00 parts of main chain conjugated polyelectrolyte, 0.03-3.30 parts of an oxidant and 40-400 parts of a solvent, wherein a 3,4-ethylene dioxythiophene monomer is subjected to in situ oxidation polymerization in an aqueous solution of the water-soluble main chain conjugated polyelectrolyte to form a blue-black ink-like disperse system. A compact film is formed through slow volatilization of the solvent, thiophene molecules of the film are arranged in parallel and piled along molecular chains of the polyelectrolyte to form a height-oriented crystalline structure, so that the conductivity and stability of the film are obviously improved. The film has an important application prospect in the field of organic electronic devices including polymer photovoltaic cells, organic light-emitting diodes and super-capacitors.

The invention discloses a reverse polymer solar cell with a dual electron transport layer structure. In the cell, a layer of organic n type doped electron transport layer is introduced into the current most advanced reverse photovoltaic device structure (a cathode/electron take-out layer/light active layer/cavity collecting layer (transition metal oxide layer)/anode), and the reverse photovoltaic device structure is upgraded into a structure of a cathode/organic n type doped electron transport layer/electron take-out layer/light active layer/cavity collecting layer (transition metal oxide layer)/anode. Compared with a non-upgraded structure, the structure has the characteristics of low power consumption, high stability, high photogenerated electron collecting efficiency and high performance, and the defects of overhigh inner series connection resistance and low photogenerated electron collecting efficiency existing in the current reverse polymer solar cell can be overcome; and the structure plays a positive role in promoting the commercialization of the current polymer photovoltaic technology.

The invention relates to a preparation method of an A2-(pi-A1)2 wide band gap non-fullerene receptor material based on diphenylthiophenyl sulfone and an application thereof in a polymer photovoltaic device. The A2-(pi-A1)2 wide band gap non-fullerene receptor material based on the diphenylthiophenyl sulfone and the preparation method and application thereof are characterized in that the diphenylthiophenyl sulfone is a weak acceptor electron (A2) unit; the pi bridge is 3-alkyl thiophene or 3-oxyalkyl thiophene; a terminal strong acceptor electron (A1) unit is cyano indanone and fluorinated andchlorinated derivatives thereof; the wide band gap non-fullerene acceptor material has an electrochemical band gap of up to 2.01 electron volts and can be used as a receptor material applied to solution-processed polymer solar cells with narrow band gap polymers; when the polymer PTB7-Th is utilized as a donor, the maximum energy conversion efficiency and open circuit voltage of bulk heterojunction polymer solar cell are 1.77% and 0.89 volts, respectively. The A2-(pi-A1)2 wide band gap non-fullerene receptor material based on the diphenylthiophenyl sulfone has the advantage of achieving efficient energy conversion of the A2(pi-A1)2 wide band gap non-fullerene receptor material in the polymer solar cells.

The invention belongs to the field of organic functional materials, relates to application of an acceptor material with a benzhydryl derivative and a PC60BM bis-adduct in a polymer photovoltaic cell. The structural formula is shown in the formula I. In the formula, R is a linear or branched alkyl group with the number of hydrogen, fluorine atoms or carbon atoms being 1-20 or a linear or branched alkoxyl group with the number of carbon atoms being 1-20. A polymer can be used as a donor material of an ontology heterojunction solar cell; the derivative can effectively improve the LUMO energy, further boost the open-circuit voltage of the polymer photovoltaic cell and finally improve the photoelectric conversion efficiency of the cell.

The invention belongs to the field of high polymer photoelectric materials and discloses a condensed-ring n-type polymer with a main chain containing cyano indanone and application of the condensed-ring n-type polymer. A structural formula of the condensed-ring n-type polymer is as shown in the specification, wherein n refers to a positive integer greater than 3 and less than 1 million; R2, R2, R3and R4 refer to alkyl chains; A and C refer to conjugated unit structures; B refers to an aromatic ring. The condensed-ring n-type polymer with the main chain containing cyano indanone is high in absorption coefficient and capable of remarkably improving light current and efficiency of battery devices when serving as an electron acceptor; serving as the electron acceptor, the condensed-ring n-type polymer with the main chain containing cyano indanone is capable of realizing excellent short-circuit current, open-circuit voltage and fill factors, and full-polymer photovoltaic devices in energyexchange efficiency higher than 10% can be prepared from the condensed-ring n-type polymer and are much superior to batteries based on existing acceptors.

The invention belongs to the field of functional polymer materials, and particularly relates to a conjugated polymer of 4,8-diisooctane alkoxy phenyl [1,2-b;3,4-b] bithiophene and fluorinated quinoxaline, the structural formula of which is shown by I. The polymer is prepared by the Stille coupling reaction of double bromide fluorinated quinoxaline and a 2,6-bis(trimethyltin)-4,8-diisooctane alkoxy phenyl [1,2-b;3,4-b] bithiophene reagent and is used for electron donor materials of polymer bulk heterojunction photovoltaic cells. The polymer disclosed by the invention introduces strong electron-withdrawing fluorine atom to the electron-deficient unit quinoxaline, thus effectively reducing the HOMO energy level of materials and enhancing the open circuit voltage of polymer solar cells.

The invention relates to a dithiophene ring-fused germanium pentadiene-fluoroquinoxaline conjugated polymer the structural general formula of which is as shown in a formula I. The polymer is prepared through Stille coupling reaction of 2,6-di(trimethyltin)-4,4-di(2-ethylhexyl)-4-germanium-dithiophene [3,2-b,2',3'-d] ring-fused germanium pentane and a di-bromine substituted fluoroquinoxaline monomer, and is used as a donor material of a bulk heterojunction solar cell. As for the polymer, a strong electron withdraw group fluorine atom is introduced to electron-shortage unit quinoxaline to effectively reduce the HOMO energy level of the material, so that the open-circuit voltage of a polymer photovoltaic cell is improved.

Disclosed herein are organic photosensitive optoelectronic devices comprising two electrodes in superposed relation, a photoactive region located between the two electrodes, wherein the photoactive region comprises a donor mixture and an organic acceptor material, the donor mixture comprising at least one organic polymer donor material and at least one squaraine donor. Methods of fabricating the organic photosensitive optoelectronic devices are also disclosed.

The invention belongs to the organic chemical field, and discloses a chloroquinoxaline compound, a structural general formula of the conjugated polymer is shown as I. The compound introduces a fluorine atom with a strong electrosorption characteristic on quinoxaline, thereby the HOMO energy level of the material can be effectively reduced, and the open-circuit voltage of a polymer photovoltaic cell can be enhanced. By using cyclic voltammetry determination of the HOMO energy of the compound, compared with a non-chloroquinoxaline derivative, the HOMO energy level of a single fluoropolymer is lower by 0.02-0.15eV than that of the non-chloroquinoxaline, and the HOMO energy level of the double fluoro polymer is lower by 0.05-0.3eV than that of the non-chloroquinoxaline. The compound can be taken as an intermediate of a polymer photovoltaic material for preparing the polymer photoactivity material with excellent performance. By using cyclic voltammetry determination of the HOMO energy of the compound A-I, compared with the non-chloroquinoxaline derivative, the HOMO energy level of the single fluoropolymer is lower by 0.02-0.15eV than that of the non-chloroquinoxaline, and the HOMO energy level of the double fluoro polymer is lower by 0.05-0.3eV than that of the non-chloroquinoxaline.

The invention belongs to the field of functional polymer materials and particularly relates to a conjugated polymer of 4, 8-diisooctyl alkoxy phenyl [1, 2-b; 3, 4-b] bithiophene and fluoro-quinoxaline. The conjugated polymer is represented as formula I, is prepared by means of Stille coupled reaction of dibromo-fluoro-quinoxaline and 2, 6-bis (trimethyltin)-4, 8-diisooctyl alkoxy phenyl [1, 2-b; 3, 4-b] bithiophene and is used for electron donor materials of polymer bulk heterojunction photovoltaic cells. Fluorine atoms with strong electron withdrawing groups are introduced onto quinoxaline of an electron-deficient unit of the polymer, so that the HOMO (highest occupied molecular orbital) energy level of the materials can be effectively reduced, and further, open-circuit voltage of polymer photovoltaic cells is increased.

The invention relates to a dithiophene ring-fused germanium pentadiene-fluoroquinoxaline conjugated polymer the structural formula of which is as shown in a formula I. The polymer is prepared through Stille coupling reaction of a 2,6-di(isooctyl)-4,4-di(2-ethylhexyl)-4-germanium-dithiophene [3,2-b,2',3'-d] ring-fused germanium pentylene monomer and a fluoro-5, 8-di(5-bromine thienyl) quinoxaline monomer which serves as an electron acceptor unit, and is used as a donor material of a bulk heterojunction solar cell. As for the polymer, a strong electron withdraw group fluorine atom is introduced to an electron-shortage unit quinoxaline to effectively reduce the HOMO energy level of the material, so that the open-circuit voltage of a polymer photovoltaic cell is improved.

The invention relates to a linked furan-based n-type conjugated polymer and its application in organic photoelectric device. The conjugated polymer is composed of two parts which are naphthalimide andsubstituted linked furan conjugated structure. The conjugated polymer has wide absorption spectrum and absorption coefficient, and high electronic mobility, and can be applied to the high-efficient organic photovoltaic device as the high-efficient electronic acceptor. The invention designs the D-A copolymerized n-type semiconductor conjugated polymer, the conjugated polymer can greatly improve the absorption coefficient of the polymer, widen the absorption spectrum, greatly improve the light current and efficiency of the battery device; the novel n-type conjugated polymer can reach the short-circuited current as the electronic acceptor, and balance an open-circuit voltage and a filling factor; a full polymer photovoltaic device of which energy conversion efficiency is more than 10% is prepared, and is much better than the battery performance of the existed acceptor.