338results about How to "Improve photoelectric conversion performance" patented technology

An electrolyte composition comprising a compound represented by the following general formula (1):wherein R represents a substituent containing a -(CR1R2-CR3R4-O)n- bond (in which R1 to R4 are independently a hydrogen atom or an alkyl group, n being an integer of 2 to 20); Q represents an atomic group forming an aromatic cation having a 5- or 6-membered ring structure with a nitrogen atom, which may have a substituent; and X- represents an anion. A photoelectric conversion device comprising the electrolyte composition and a photo-electrochemical cell composed thereof are also provided.

A solid-state image pickup device comprises: a plurality of photoelectric converting films stacked via an insulating layer, the photoelectric converting films being above a semiconductor substrate in which a signal read circuit is formed, in which each of the photoelectric converting films is sandwiched between a pixel electrode film and an opposing electrode film, wherein the pixel electrode film of an upper one of the photoelectric converting films is connected to the signal read circuit by a longitudinal line passing through a lower one of the photoelectric converting films, and, in the longitudinal line, a passing portion which passes through the lower photoelectric converting film is formed by filling an opening with a conductive material, the opening being formed from a same plane of the pixel electrode film stacked on the lower photoelectric converting film to an upper end face of the insulating layer stacked above the photoelectric converting film.

The invention relates to a formula of an environment-friendly Ag conductor slurry for a silicon solar cell front gate line electrode and a processing method thereof. The component and the content (weight percentage) of the Ag slurry are: a metal Ag powder 60-80, a lead-less glasses adhesive 1-10, an Ohm contact additive agent 0. 05-10, and organic resin 2-15and a slurry modifying agent 1-8 The production method of the environment-friendly Ag conductor slurry comprises a preparation of the lead-less glass adhesive, a formula of the Ag slurry and a processing process of the slurry. The developing Ag slurry implements the slurry lead-free by using a Ba-Zn-B glass material and the lead content of the slurry is less than 100 ppm, while the content of other harmful substances such as Hg and Cd or the like is all conformed to the environment protection demand. A good Ohm contact is formed on the silicon surface of the Ag line and the cell by adding the Ohm contact forming agent in the slurry. The Ag slurry has strong adhesive force, superior weldability, good Ohm contact and high cell conversion efficiency after a continuous tunnel furnace fast heat treatment when the Ag slurry is used in the silicon solar cell front gate line electrode.

The invention relates to a perovskite solar cell and a method for manufacturing the same. The perovskite solar cell comprises an FTO (fluorine-doped tin oxide) transparent conducting glass substrate, an electron transport layer, a light absorption layer, a hole transport layer and a metal electrode. The light absorption layer is made of (C<6>H<5>CH<2>CH<2>NH<3>)<2>(CH<3>NH<3>)<n-1>Pb<n>I<3*n+1> (the n is equal to 1 or 2) materials which are of two-dimensional layered structures. The perovskite solar cell and the method have the advantages that the layered perovskite light absorption layer is manufactured by the aid of a spin coating process, the method is simple and is excellent in film-forming property, the materials of the light absorption layer can be changed along with the layer number n, gaps of the materials can be adjusted, and the materials are excellent in chemical stability and still can keep the excellent layered structures without chemical decomposition after being exposed at high air humidity (50-80%) for 30 days, solar cell prototype devices with excellent and stable performance can be obtained, and the perovskite solar cell and the method are favorable for promoting perovskite solar cell commercialization progress.

The present invention provides one kind of effective way of constructing high performance biological light electrode. By means of modifying various mutants of extracted purple bacteria photosynthesis reaction center protein (RC) to specific nano semiconductor substrate, composite light electrode with high efficiency photoelectronic conversion function in wide wavelength range, especially in near infrared area may be obtained. On one side, these artificially modified RC has even higher photoelectronic conversion efficiency than natural RC. On the other side, adopting nano semiconductor material, especially mesoporous semiconductor material, can promote the photoelectronic conversion of RC while realizing the efficient fixation of RC. The modified and optimized RC has sensitizing effect on nano semiconductor, and this raises greatly the absorption and utilization of composite light electrode on solar energy and is favorable to developing efficient solar energy cell.

This invention discloses a method for preparing CdS quantum point sensitized porous TiO2 photo-electrode including the following steps: bathing a surface-active agent and melting it, adding n-butyl alcohol and hexamethylene alkyl to get a mixed solution, then adding Cd(NO3)2 and sulfocarbamide into the solution and adding deionized water after being dissolved to form a micro emulsion solution to be poured into a reaction kettle to be composed in hot water, then repeatedly cleaning the reaction product to be dried in vacuum and filled with alcohol to form an alcohol solution of CdS quantum points, preparing a TiO2 porous film with a sol gel method or a hot-water crystal method to be dipped in an alcohol solution of oxalic acid and acetic acid then in the CdS quantum point alcohol to assemble it on the surface and in the cavities of the TiO2 porous film.

The invention discloses a ZnO/g-C3N4 nanocomposite and its preparation method, and belongs to the field of solar energy utilization technology. The ZnO/g-C3N4 nanocomposite is a composite material of zinc oxide nanorod and g-C3N4, namely ZnO/g-C3N4. The nanocomposite is obtained by a two-step method, which specifically includes: Step One, an electrochemical deposition method is implemented to grow the zinc oxide nanorod; and Step Two, a direct heat treatment method is implemented to coat the zinc oxide nanorod with a layer of g-C3N4. According to the prepared ZnO/g-C3N4 nanocomposite, separation efficiency of photogenerated electron-holes is raised and photoresponse current density is enhanced by means of high specific surface area, large energy gap and good photoconduction performance of the zinc oxide one-dimensional nanorod as well as visible-light response characteristics and high chemical stability of g-C3N4. Thus, solar energy utilization rate is raised effectively, and a good method is provided for the current problem of solar energy utilization. The preparation method of the ZnO/g-C3N4 nanocomposite has advantages of low energy consumption, simple condition, easy operation and the like.

The invention discloses an all solid state perovskite microcrystalline silicon composite solar battery and a preparation method thereof, and relates to a semiconductor device specially suitable for converting light energy into electric energy. The all solid state perovskite microcrystalline silicon composite solar battery is composed of a transparent conducting substrate, an oxide semiconductor film layer, a perovskite light absorption layer, a microcrystalline silicon hole transport layer and a back electrode. The preparation method of the all solid state perovskite microcrystalline silicon composite solar battery includes: preparing the perovskite light absorption layer on the transparent conducting substrate coated with an oxide semiconductor film; depositing the microcrystalline silicon hole transport layer on the perovskite light absorption layer so as to form an all solid state perovskite microcrystalline silicon composite film; compositing perovskite light absorption layer material and P type microcrystalline silicon material in matching mode. The all solid state perovskite microcrystalline silicon composite solar battery prepared from the above preparation method simultaneously overcomes the defects that an existing perovskite solar battery is poor in stability and expensive in cost due to the fact that organic hole transport material is used on the existing perovskite solar battery, and the defects that preparation costs are high and photoelectric conversion efficiency is low, caused by low preparation speed of a microcrystalline silicon thin film solar battery.

The invention relates to a method for synthesizing nano titanium dioxide through microwaves, which comprises the following steps: (1) dissolving inorganic titanium compounds in a reaction medium to prepare a prodromic mixed solution of which the concentration of the element titanium is 0.01-0.50 mol/L; putting the prodromic mixed solution in a microwave reactor, and carrying out the microwave synthetic reaction under high pressure of 0.1-4.0 MPa in the presence of microwaves, wherein the frequency of the microwaves is 2-3 GHz, the reaction time is 5min to 1h, and the temperature is 100-250 DEG C; and (2) separating the obtained solid-liquid mixture, taking the solid, washing and drying. The obtained nano titanium dioxide has the advantages of small particle size, favorable dispersivity, ordered crystalline structure, favorable photoluminescence and photocatalysis performance, high photoelectric transformation efficiency and simple preparation method.

The invention relates to the field of solar batteries and provides an organic solar battery and a preparation method thereof. The organic solar battery comprises a light reflection electrode, a light sensitive layer arranged on the light reflection electrode, a transparent electrode arranged on the light sensitive layer, an upper converting structure arranged on the transparent electrode, and a transparent insulation layer positioned between the transparent electrode and the upper converting structure; and the upper converting structure comprises an upper converting material having an upper converting function to a spectrum. In the organic solar battery, on the one hand, the photoelectric converting performance of the battery can be improved by arranging the upper converting structure, and on the other hand, the upper converting layer and the solar battery can be electrically independent relatively by arranging the transparent insulation layer, so disadvantageous influences of the upper converting material on the photoelectric conversion of the solar battery can be avoided, and the electric performance of the organic solar battery is enhanced; therefore, the organic solar battery has a wide application prospect.

The invention discloses a preparation method for a metal sulfide catalytic electrode and application thereof. According to the invention, metal element or any one form or more than one form of metal sulfide is resolved in hydrazine together with a sulfur element or together with any one form or more than one form of sulfur ammonium salt or sulfur hydrazonium salt, thereby forming a NH4 or N2H5 kation; the metal and the sulfur element form a precursor solution of an anion; the precursor solution is coated on the transparent conductive substrate; and the obtained transparent conductive substrate adsorbing the precursor is subjected to heating and annealing processing, thereby obtaining the metal sulfide catalytic electrode.

The invention discloses a high-mobility organic micromolecule-doped ternary solar cell, and belongs to the field of organic polymer photovoltaic devices or organic semiconductor thin-film solar cells. An inversion structure is adopted by the cell; the cell sequentially comprises a substrate layer, a transparent conductive cathode ITO, a cathode buffer layer, a photoactive layer, an anode buffer layer and a metal anode from bottom to top; and the photoactive layer comprises the following components in percentage by weight: 38%-39.5% of an electron donor, 57%-60% of an electron acceptor and 0.5%-5% of high-mobility organic micromolecules. A high-mobility organic micromolecule material is added to the photoactive layer; the transmission capability of holes in the photoactive layer is improved; and the collection capability of the holes on the anode is improved, so that the short-circuit current density of the device is improved; and the photoelectric conversion property of the device is finally improved. The high-mobility organic micromolecule-doped ternary solar cell has the advantages of high photoelectric conversion property, simplicity in preparation technology, short manufacture procedure and low cost.

The invention discloses a double-side growth four-junction solar cell with a reflecting layer and a preparation method thereof, and the solar cell comprises a GaAs substrate; the GaAs substrate is an n-type GaAs single-crystal slice that is polished in two sides; a GaAs buffer layer, a first tunnel junction, a AlGaAs/GaInAs DBR reflecting layer, a GaInNAs sub-cell, a second tunnel junction, a AlAs/AlGaAs DBR reflecting layer, a GaAs sub-cell, a third tunnel junction, a GaInP sub-cell, an ohmic contact layer, an antireflection coating, and a front electrode grow on the upper surface of the GaAs substrate from top to bottom; a Ga1-zInzP strain buffer layer, a Ga1-xInxAs sub-cell and a back electrode are provided on the lower surface of the GaAs substrate in order. According to the invention, photon absorption efficiency can be raised; at the same time, the advantages of the four-junction solar cell can play their roles; the integral open-circuit voltage and a fill factor of the GaAs multi-junction cell can be raised; and the photoelectric conversion efficiency of the cell can be improved finally.

The invention relates to a solar cell encapsulating EVA (ethylene vinyl acetate copolymer) adhesive film with high light transmittance. The solar cell encapsulating EVA adhesive film is characterized in that the thickness of the EVA adhesive film is 0.8 mm-1.1 mm, and the EVA adhesive film is prepared from raw materials in parts by weight as follows: 100 parts of EVA resin, 0.5-2.5 parts of a plasticizer, 0.1-0.3 parts of a photoelectric conversion rate enhancer, 1-4 parts of an anti-aging agent, 1.5-2.5 parts of a blocking agent, 1-2 parts of a dispersing agent, 1-3 parts of a coupling agent and 1-3 parts of a cross-linking agent. Firstly, the raw materials are added to a mixer proportionally and mixed into uniform components, the components are subjected to melt mixing by a banbury mixer and then subjected to extrusion and pelletizing, and the EVA adhesive film is obtained. According to the prepared EVA adhesive film, the light transmittance of the adhesive film is not influenced and the mechanical properties are greatly improved while properties and photoelectric conversion efficiency of the adhesive film are improved with addition of multiple additives.

The invention provides a TiO2 composite film photo-electrode and a preparation method thereof, relating to a DSC composite film photo-electrode and the preparation method thereof. The composite film photo-electrode comprises a conductive substrate and a TiO2 composite film; the composite film consists of a layer of TiO2 with low crystallinity, and a layer of anatase nanometer crystal TiO2 meso-porous film. The method comprises the steps as follows: the TiO2 film with low crystallinity is firstly prepared on the conductive substrate; subsequently, the anatase nanometer crystal TiO2 meso-porous film is prepared on the conductive substrate to gain the finished product. The optical current of the DSC assembled by the TiO2 composite film photo-electrode is up to 21.98mA/cm<2> and the total photoelectric conversion efficiency thereof reaches 6.89% which is higher by 47%. The DSC assembled by the TiO2 composite film photo-electrode is obviously improved on the photoelectric conversion efficiency. The method has simple process and low cost. The DSC assembled by TiO2 composite film photo-electrode prepared by the preparation method can be widely applied to a large area photoelectric conversion system and is especially suitable for external walls, roofs, doors and windows, glass curtain walls and the like which are combined with the building.

The invention relates to a dye sensitization solar cell light anode and a preparation method thereof. The light anode is characterized in that chemical modification for the dye sensitization solar cell light anode improves the sensitization effect of the dye on the light anode, thereby improving the photoelectric conversion efficiency of the cell. The concrete realization method is to carry out the surface modification of light anode nano crystal through nano SiO2, carry out functionalization, and absorb the dye. The modification of a nano SiO2 layer inhibits the surface state of a nano crystalline film and improves the photoelectric conversion performance of the cell; and simultaneously the surface functionalization increases the absorption amount of the dye, thereby effectively improving the photoelectric conversion efficiency of the solar cell.

This invention discloses a method for preparing SnO2/TiO2 composite nanofilm used for photoelectric conversion. The method comprises: (1) cleaning the substrate; (2) preparing TiO2 sol and SnO2 sol; (3) coating the substrate with a layer of TiO2 sol film, drying, and coating the substrate with a layer of SnO2 sol film; (4) repeating the above procedures to obtain multiple composite film; (5) placing in a muffle furnace, heating, cooling with distilled water, and drying to obtain the composite film. The composite film has low cost and simple process, and better photoelectric conversion property than that of single composition film.

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 building with triangular solar photovoltaic conversion structures, which comprises a solar controller, a storage battery, an inverter, solar panels, transparent building glass, triangular supporting structures and heat insulating materials, wherein the back surfaces of the triangular supporting structures are connected onto a building elevation structure, the solar panels for photovoltaic conversion are installed on the inclined surfaces of the triangular supporting structures, light reflecting plates, arc-shaped light condensing plates, decoration plates or decoration glass plates are installed on the other surfaces of the triangular supporting structures, and the right-angle outward extension surfaces of the triangular supporting structures are the transparent building glass or transparent building doors/windows.

The invention provides a preparation method of a fluoride-free single-crystal TiO2 nanometer thin film and belongs to the technical field of functional materials. The preparation method using an amorphous state TiO2 nanotube array thin film as a precursor comprises the following steps of: firstly soaking the precursor in an ammonium fluoride aqueous solution so as to initialize the concentration of fluoride ions contained in the precursor; then calcining the precursor in a sealing container, so that the precursor collapses under the catalytic effect of the fluoride ions and the high-temperature effect and is converted into TiO nanometer particles the surfaces of which contain fluorine with exposed (001); finally, carrying out defluorination treatment at a high temperature to obtain the fluorine-free single-crystal TiO2 nanometer thin film. The TiO2 nanometer thin film prepared by the method has higher photocatalytic performance and photovoltaic conversion performance as well as wide application prospect in terms of solar photovoltaic devices, photolysis water, photocatalysis and the like. The preparation method adopts a two-step or multi-step later-period thermal treatment combination technology and has the advantages of high controllability, good repeatability, high production cost, low synthetic cost, large-scale manufacturing, and the like.