3121 results about "Dye-sensitized solar cell" patented technology

A dye-sensitized solar cell (DSSC) comprising nanoparticles formed on a surface of a nanowire formed on a substrate and a method of fabricating the same is disclosed. The dye-sensitized solar cell comprises a first substrate. A nanowire is formed on the first substrate. A plurality of nanoparticles is then contacted with a surface of the nanowire. The dye-sensitized solar cell further comprises a dye adsorbed onto a surface of the nanoparticles. A second substrate is corresponded to the first substrate. Finally, an electrolyte is filled between the first substrate and the second substrate, and in contact with the dye and nanoparticles. The nanoparticles are bonded to the surface of nanowire to extend and increase surface contact with the dye for promoting cell efficiency (η) of the dye-sensitized solar cell.

Panchromatic photosensitizers having a Formula of ML1L2X were synthesized, wherein M comprises ruthenium atom; X is a monodentate anion; L1 is heterocyclic bidentate ligand having one of formulae listed below:wherein G2 has one of formulae listed below:and L2 is a tridentate ligand having a formula listed below:The substituents R1, R2, R3, R4, R5, R6, R7 of L1 and L2 are the same or different, and represent alkyl, alkoxy, alkylthio, alkylamino, halogenated alkyl, phenyl or substituted phenyl group, carboxylic acid or counter anion thereof, sulfonic acid or counter anion thereof, phosphoric acid or counter anion thereof, amino-group, halogens, or hydrogen. The above-mentioned photosensitizers are suitable to use as sensitizers for fabrication of high efficiency dye-sensitized solar cell.

An electrolyte composition containing an ionic liquid and conductive particles as main components, an electrolyte composition containing an ionic liquid, and oxide semiconductor particles or oxide semiconductor particles, and conductive particles, and an electrolyte composition containing an ionic liquid and insulating particles are provided. Furthermore, a photoelectric conversion element comprising: a working electrode, the working electrode comprising an electrode substrate and an oxide semiconductor porous film formed on the electrode substrate and sensitized with a dye; a counter electrode disposed opposing the working electrode; and an electrolyte layer made of these electrolyte compositions is provided.

An organic dye used in a dye-sensitized solar cell is described, having general formula (1):D-Sp1-Ch-Sp2-Acc-Y  (1)wherein the groups D, Ch, Acc and Y are conjugate with each other, the group D is a donor group, the group Ch is a chromophore rendering low HOMO-LUMO gap or a polyaromatic chromophore, the group Acc is an acceptor group, the group Y is an anchoring group, and each of Sp1 and Sp2 represents a single bond or a spacer group allowing conjugation between the groups D and Ch or between the groups Ch and Acc.

Photosensitizers having a formula of RuL1L2 (1) are provided, wherein Ru is ruthenium; L1 and L2 are heterocyclic tridentate ligands. L1 has a formula of (2), and L2 has a formula of G1G2G3 (3), wherein G1 and G3 are selected from the group consisting of formulae (4) to (7), and G2 is selected from the group consisting of formulae (7) and (8). The above-mentioned photosensitizers are suitable to be used as sensitizers for fabrication of high efficiency dye-sensitized solar cells.

A titanium dioxide nanorod having anisotropy and a preparation method thereof in which, particularly, an ultrafine composite fiber of polymer and titanium dioxide precursor and a single crystal titanium dioxide nanorod using a phase separation are prepared, wherein a mixed solution containing titanium dioxide precursor, polymer which is compatible with the precursor and solvent is prepared, the mixed solution is electrospun to form titanium dioxide polymer composite fiber containing ultrafine fibril structure therein by the phase separation between the titanium dioxide precursor and the polymer, the composite fiber is heat-pressed, and the polymer material is removed from the composite fiber, so as to obtain titanium dioxide nanorod, which can be used as dye-sensitized solar cells, various sensors, and photocatalysts.

An electrode for a photoelectric conversion device includes a transparent substrate and a transparent conductive film, in which the transparent conductive film contains an added metal element on at least one surface thereof, and the surface resistance of the transparent substrate is reduced in order to improve the photoelectric conversion efficiency. A dye-sensitized solar cell includes the electrode.

A dye-sensitized solar cell comprising a semiconductor electrode comprising electrospun ultra-fine titanium dioxide fibers and fabrication method thereof are disclosed. The dye-sensitized solar cell comprises a semiconductor electrode comprising an electrospun ultra-fine fibrous titanium dioxide layer, a counter electrode and electrolyte interposed therebetween. A non-liquid electrolyte such as polymer gel electrolyte or the like having low fluidity, as well as the liquid electrolyte, can be easily infiltrated thereinto. In addition, electrons can be effectively transferred since titanium dioxide crystals are one-dimensionally arranged.

The present invention relates to a counter electrode for DSSC which includes a porous membrane include a carbon-based material calcinated at high temperature and a platinum nano-particles and maintains higher conductivity than a thin membrane and in which the electrolyte moves smoothly, a method of preparing the same, and a DSSC using the same which is improved in photoelectric efficiency.

Provided are a photo-electrode for dye-sensitized solar cells, and back contact dye-sensitized solar cells comprising the same. The photo-electrode includes a porous membrane having metal oxide nano-particles adsorbed in a photosensitive dye directly contacting a transparent substrate without intermediation of a conductive film, so that the photo-electrode has advanced light transmittance without absorption and scattering of incident light by the conductive film and application possibilities to a thin film retaining a high-level of electrical conductivity, as well as an easy forming method for the conductive film.

Disclosed herein are a solar cell-driven display device wherein a dye-sensitized solar cell, which comprises a light-absorbing layer that comprises a semiconductor electrode including a transparent electrode formed on a substrate and nanocrystals adsorbed with a photosensitive dye on the transparent electrode, and a hole transport layer and a counter electrode, is formed so as to exhibit a display device function using a quantum dot light-emitting layer, as well as a manufacturing method thereof. The solar cell-driven display device exhibits the display device function using only solar light, without needing a separate power supply device, and thus can be applied to advertising displays in isolated areas or as other outdoor advertising displays.

A dye-sensitized solar cell according to one aspect of the present invention includes: a first base member having a first substrate provided with a light-transmitting property, a light-transmitting conductive layer formed on a surface of the first substrate and a semiconductor electrode formed on a surface of the light-transmitting conductive layer and containing a sensitizing dye; a second base member having a second substrate and a catalyst layer formed on a surface of the second substrate in such a manner that the catalyst layer faces the semiconductor electrode; an electrolyte layer formed between the semiconductor electrode and the catalyst layer; and either a collector electrode containing tungsten or a pair of collector electrodes, at least one of which contains tungsten, to collect charge from the semiconductor electrode. The dye-sensitized solar cell of this aspect of the present invention not only shows a sufficient photoelectric conversion efficiency but attains excellent durability by prevention of corrector electrode corrosion.

Provided are a dye sensitized metal oxide semiconductor electrode having a metal oxide semiconductor film that can adsorb a sufficient amount of dye due to a high specific surface area and exhibits high electrical conductivity due to tight contact of metal oxide particles, and a dye sensitized solar cell that exhibits high power generation efficiency by using this dye sensitized metal oxide semiconductor electrode. The dye sensitized metal oxide semiconductor electrode is produced by forming a metal oxide semiconductor film on a transparent conductive film formed on a substrate. A stock solution containing a metal oxide precursor is jetted onto the transparent conductive film by electrospinning. A nanofiber layer containing a metal oxide precursor is deposited on the transparent conductive film, and this deposited layer is fired.

The present invention provides a semiconductor electrode of organic dye-sensitized metal oxide having a semiconductor layer of metal oxide that can be easily prepared, and an organic dye-sensitized solar cell. The semiconductor electrode of organic dye-sensitized metal oxide comprises a substrate having a transparent electrode thereon, a semiconductor layer of metal oxide provided on the electrode and an organic dye absorbed on a surface of the semiconductor layer, the semiconductor layer being formed by a vapor deposition process.

The invention discloses process for preparing dye-sensitized solar cell by a complete spray coating process, belonging to a field of green renewable energy resource technology, which is characterized in that: the battery is prepared by coating semiconductor slurry, electrolyte material and counter electrode material on an electrically-conductive backing plate through a spray coating method for obtaining a photo anode and a counter electrode. The dye-sensitized solar cell of the invention is prepared by the complete spray coating method, thereby simplifying the preparation technique and avoiding use of large-sized and high-priced instruments. The process is easy to implement in industrial production, reduces cost of the solar cell, produces solar cells with high efficiency, and is suitable for making various dye-sensitized solar cells.

The invention relates to a method for preparing ionic liquid type gel polymer electrolyte through home position polymerization. The method comprises the following steps: taking acrylonitrile and polyethylene glycol dimethyl acrylic acid ester as monomers, taking ethylene carbonate as an organic plasticizer, taking azo diisobutyl cyanogen as an initiator, taking lithium perchlorate as a lithium salt, adding ionic liquid 1-butyl-3-methylimidazole tetrafluoborate as the component of the electrolyte, and adopting a free radical initiation and home polymerization mode to prepare the stable ionic liquid type gel polymer electrolyte. The home polymerization mode has a simple and feasible process, and is capable of directly assembling a lithium cell while simultaneously preparing the electrolyte. The prepared ionic liquid type gel polymer electrolyte has higher room temperature conductivity, good dimensional stability and mechanic properties, and can also be applied to dye sensitization solar cells. The prepared ionic liquid type gel polymer electrolyte cell can avoid the leakage and volatilization of the electrolyte and improve the safety of the cell.

Disclosed is a 4,4′-dicarboxy-2,2′-bipyridine derived tridentate ligand represented by formula (I):wherein definitions of Y1, Y2, and R are the same as those defined in the specification.Also disclosed are a metal complex containing the aforesaid tridentate ligand and a dye-sensitized solar cell containing the metal complex.

The invention discloses controllable crystalline form titanium dioxide and a graphite alkene composite material with high efficient photoelectricity activity and a preparation method thereof. The composite material is formed by mixing TiO2 powder and graphite alkene or scattering the TiO2 powder in oxidized graphite alkene dispersing agents to perform hydro-thermal reaction. The mass ratio of TiO2 powder and graphite or graphite alkene is 1:1 to 500:1. The preparation method is simple, low in cost and environmental-friendly. The controllable crystalline form titanium dioxide and a graphite alkene composite material with high efficient photoelectricity activity can control crystalline form of the obtained TiO2 according to the ratio of alcohol and water or amount of titanium sources. When the amount is amplified, the controllable crystalline form titanium dioxide and a graphite alkene composite material with high efficient photoelectricity activity have good performances. After the graphite alkene is composed, photocatalysis is greatly improved. All obtained products are applied to fields of dye sensitization solar cells, catalysts, lithium ion cells, sensing and the like.

This invention relates to photosensitizer dyes for dye-sensitized solar cells. The photosensitizer dyes are porphyrin-based zinc complexes represented by the following general formulae (100) and (200).wherein A is represented by one of the following formulae (111)˜(118),wherein Z1˜Z10 independently represent a hydrogen atom (H), lithium (Li), sodium (Na), or tetra-alkyl ammonium group (as represented by the following general formula (120)),wherein X1˜X4 independently represent CmH2m+1 (m=1˜6), and B, C, D, and E independently represent one of the following formulae (131)˜(140),wherein Ra˜Rz are independently selected from the group consisting of H, CmH2m+1 (m=1˜15), OCpH2p+1 (p=1˜15), CH2[OC2H4]nOCH3 (n=1˜30), and [OC2H4]qOCH3 (q=1˜30).

Disclosed is a method of manufacturing graphene, a transparent electrode and an active layer including the graphene, and a display, an electronic device, an optoelectronic device, a solar cell, and a dye-sensitized solar cell including the transparent electrode and the active layer. The method of manufacturing graphene includes: (a) preparing a subject substrate; (b) forming a metal thin film on the subject substrate and heat-treating the metal thin film to increase the grain size of the metal thin film; (c) supplying a carbon source material on the metal thin film; (d) heating the supplied carbon source material, the subject substrate, and the metal thin film; (e) diffusing carbon atoms generated from the heated carbon source material due to thermal decomposition into the metal thin film; and (f) forming graphene on the subject substrate by the carbon atoms diffused through the metal thin film.

The invention relates to substituted ullazine and analogs of ullazine as sensitizers for dye-sensitized solar cells (DSSCs) and other photoelectrochemical and / or optoelectronic devices. The sensitizers may comprise donor substituents and / or acceptor substituents, besides an anchoring group suitable for attaching the sensitizer on a semiconductor surface. DSSCs based on this type of sensitizers exhibit high power conversion efficiencies.

The invention generally encompasses phosphonium ionic liquids, salts, compositions and their use in many applications, including but not limited to: as electrolytes in electronic devices such as memory devices including static, permanent and dynamic random access memory, as electrolytes in energy storage devices such as batteries, electrochemical double layer capacitors (EDLCs) or supercapacitors or ultracapacitors, electrolytic capacitors, as electrolytes in dye-sensitized solar cells (DSSCs), as electrolytes in fuel cells, as a heat transfer medium, among other applications. In particular, the invention generally relates to phosphonium ionic liquids, salts, compositions, wherein the compositions exhibit superior combination of thermodynamic stability, low volatility, wide liquidus range, ionic conductivity, and electrochemical stability. The invention further encompasses methods of making such phosphonium ionic liquids, salts, compositions, operational devices and systems comprising the same.

The invention relates to a method for preparing titanium dioxide films for a dye-sensitized solar battery, comprising the following steps: (a) titanium dioxide sol with 1-10 wt percent of titanium dioxide, 5-10nm of grain size and 10-100mg / mL of concentration and titanium dioxide powder with 5-15 wt percent of titanium dioxide and 20-40nm of grain size are uniformly ground, 80-90 wt percent of pore-forming agent is added, and the obtained 100wt percent of mixture are grounded for 0.5-2 hours; (b) titanium dioxide slurry is coated on conductive glass and is dried for 5-15 minutes at 100-130 DEG C; and (c) the conductive glass coated with the titanium dioxide slurry is sintered for 0.5-2 hours at 450-500 DEG C; by adopting the method in the invention, the process is simple, the operation is easy, the preparation period is short, thereby being beneficial to industrialization; in addition, the photoelectricity conversion efficiency of the dye-sensitized solar battery assembled by the titanium dioxide films is high by adopting the method.

A solar cell having at least one hole blocking layer and at least one electron blocking layer, and methods of fabricating such devices. Specifically, a hole blocking layer is disposed between a first electrode of the solar cell and the active layer. Further, an electron blocking layer is disposed between a second electrode and the active layer. The solar cell may be formed by fabricating an anode component and a cathode component and laminating the anode component and the cathode component together.

The present invention provides in one aspect a composition having at least one metal complex, such that the metal complex comprises at least one metal atom, at least one first organic ligand comprising at least one triarylamine group, at least one second ligand comprising at least one acidic group, and at least one thiocyanate or isothiocyanate ligand. This composition may be disposed on a semiconductor layer which is further disposed on an electrically conductive surface to provide a dye-sensitized electrode. The dye-sensitized electrode can be assembled together with a counter electrode and a redox electrolyte to provide a dye-sensitized solar cell.

Methods for fabrication of copper delafossite materials include a low temperature sol-gel process for synthesizing CuBO2 powders, and a pulsed laser deposition (PLD) process for forming thin films of CuBO2, using targets made of the CuBO2 powders. The CuBO2 thin films are optically transparent p-type semiconductor oxide thin films. Devices with CuBO2 thin films include p-type transparent thin film transistors (TTFT) comprising thin film CuBO2 as a channel layer and thin film solar cells with CuBO2 p-layers. Solid state dye sensitized solar cells (SS-DSSC) comprising CuBO2 in various forms, including “core-shell” and “nano-couple” particles, and methods of manufacture, are also described.

Disclosed is a solid state dye-sensitized solar cell employing a composite polymer electrolyte, which includes a photoelectrode, a counter electrode, and an electrolyte interposed between the photoelectrode and counter electrode. The electrolyte includes at least one of a middle molecular substance, a polymer mixture, and inorganic nanoparticles, and a redox derivative. The dye-sensitized solar cell reduces crystallinity of the polymer electrolyte to significantly increase ionic conductivity, and enables the polymer electrolyte to smoothly permeate into a titanium oxide layer to improve mechanical properties, thereby significantly increasing energy conversion efficiency. Accordingly, the dye-sensitized solar cell assures high energy conversion efficiency without an electrolyte leak, and thus, it can be stably and practically used for a long time.