486results about How to "Increase light receiving area" patented technology

The invention relates to an apparatus and a cultivating method for scaled cultivation of microalgae. The apparatus comprises: an open-type track tank; a liquid outlet arranged on the open-type track tank; a liquid pump connecting to the liquid outlet, wherein a liquid inlet on the bottom of a photobioreactor is connected to the liquid outlet through the liquid pump; a liquid outlet tube on the top of the photobioreactor, wherein culture solution is delivered back to the open-type track tank through the tube. The cultivating method comprises the steps that: part of the culture solution in the open-type track tank is pumped into the bottom of the photobioreactor through the liquid pump; the culture solution is delivered from the top of the photobioreactor back to the open-type track tank, such that a circulation of culture solution is realized; the bottom of the photobioreactor is ventilated, and carbon is filled. With the apparatus and the method provided by the present invention, photosynthetic carbon fixation efficiency of open-type track tank microalgae cultivation is substantially improved, microalgae growth rate and cultivating density are substantially improved, cultivating period is reduced, and apparatus cost and operation cost of scaled microalgae cultivation are reduced.

The present invention relates to the preparation of high activity TiO2 photocatalyst with porous ceramic base, and is especially the nano titania powder and titania sol combining process of preparing regenerable high activity nano titania carried in porous ceramic. The present invention prepares the high activity nano titania carried in porous ceramic through the combination of two carrying processes, titania powder sintering process and sol-gel process. The process includes preparing titania sol via sol-gel process, mixing titania sol and titania powder in certain ratio while stirring and adding dispersant and adhesive to form new solution, carrying the solution to the surface of porous ceramic, fumigating the carrying ceramic in water vapor atmosphere to eliminate most of the organic matters, and final sintering at high temperature for strong combination between nano titania and carrier and raised activity of titania.

The invention discloses an elongated pinecone apple tree form and a trimming method thereof; the integral tree form is in an elongated pinecone shape; the tree is 3.5-4.5m in height when approaching a full bearing period, and has 25-30 main branches; the tree is 2.8-3m after lowering the cap, the main trunk is 1.0-1.5 m in height, the tree has 18-22 main branches, a main branch opening angle is 110-130 degrees, the main branch is 50-70cm in length on the upper portion of the crown, and 110-130cm on the lower portion of the crown; the spacing between the main branches is 10-20cm; the main branches are arranged in a spiral manner around the main trunk; the branch-trunk ratio is 1:3-6; the branch group-main branch ratio is 1:5-7. The tree form is small on top and big in bottom, tidy and standard, strong in main trunk, strong in wind-resistance, ventilating and light transmission, suitable for close planting, and is a high yield, stable yield, high-quality and high efficiency tree form; the trimming method complies with the trend that tree body frame decreases and trimming is simplified; the method is easy to handle, and good for promotion in wind-line close planting apple gardens.

The present invention relates to new photocatalyst material and its preparation process and application. The technological scheme is that the photocatalyst material consists of active carbon fiber and supported titania in the titanium element content of 12-15 wt%. Through dissolving tetrabutyl titanate in anhydrous alcohol, soaking active carbon fiber in the solution for 5-8 hr, heating the soaked active carbon fiber to 180-220 deg.C while introducing hot water vapor, calcining at 550-700 deg.C in nitrogen atmosphere and cooling naturally to room temperature, the supported photocatalyst material is prepared. When the photocatalyst material is used, the solution is irradiated with ultraviolet ray in the solution surface irradiation amount of 12.5-12.8 mW / sq cm at constant temperature of 20-40 deg.C while introducing air to maintain the concentration of dissolved oxygen. The present invention can degrade the methylene blue and sulfanilic acid in the solution completely.

A method for cultivating rose includes such steps as field planting by alternatively wide and narrow row spacings and staggered pits, forced dormancy, and conventional field management same as the method for tea trees. A method for picking up the rose flower is also disclosed. Its advantages are high output of rose flower, and high output rate of rose oil.

There are provided a TFT, a TFT substrate using the TFT, a method of fabricating the TFT substrate, and an LCD. The TFT includes a source region, a drain region, and a gate electrode having an opening. The opening of the gate electrode is to enhance the light sensing ability of the TFT when it is used as a light sensor, since light is incident into a region where the opening is formed. The TFT including the gate having the opening can be used in a substrate of a flat display or an LCD using such a substrate. The above TFT can sense light incident from outside the display to adjust the brightness of the screen according to the external illumination.

In a dye sensitizing solar cell 1 wherein an electrolyte 4 is filled in a space between a photoelectrode 2 and a counter electrode 3, recesses 8 are formed in the surface 5a of a substrate member 5 of the photoelectrode 2, and a transparent electrode film 6 is formed on the surface of the substrate member 5 to form recessed portions 10 in the transparent electrode film 6. On the transparent electrode film 6 of the photoelectrode 2 with this construction, a porous semiconductor electrode film 7 is formed, and a sensitizing dye is absorbed and carried on the porous semiconductor electrode film 7.

The invention discloses a single component HJT battery low temperature silver paste comprising the following components by weight: 50-90 parts of first conductive powder, 5-40 parts of second conductive powder, 1-2 parts of thermosetting resin, 0-5 parts of curing agent and 0-5 parts of auxiliary agent. The first conductive powder is flake silver powder, and the second conductive powder is at least one of nano conductive powder, low melting point conductive metal powder, low melting point conductive alloy powder, high melting point conductive metal powder and high melting point conductive alloy powder. The HJT battery low temperature silver paste has low resistivity after cured, good adhesion of conductive particles, good over-net performance, excellent aspect ratio, photolysis resistance,aging resistance and lower cost.

The invention relates to the photovoltaic or semiconductor field, in particular to a solar cell string and a solar cell component for ground power generation and a solar cell plate thereof. The solar cell string for ground power generation is characterized in that the cell plate is 3-40cm long, 1-15cm wide and 0.08-2mm thick, the front face of the cell plate is provided with fine grids, the line width of the fine grids is 10-200 microns, the spacing of the fine grids is 1-10mm, one end of the fine grids of the cell plate is connected with the back surface of a cell plate with an identical structure through bus bars in a welding way, and the direction of the bus bars is identical to the direction of the fine grids of the cell plate. Since the light receiving area of the cell plate is larger than the light receiving area of the existing cell plate, the invention improves the conversion efficiency of the cell plate. Moreover, since short bus bars are connected between the cell plates of the solar cell string provided in the invention, the current movement distance is short and is about one hundredth of the existing structure, thereby reducing the electric quantity loss of the solar cell component as well as the material cost.

The invention discloses a preparation method and application of a monocrystalline silicon sheet. A monocrystalline silicon rod can be cut to be a strip-shaped right-angle silicon monocrystalline sheetand a monocrystalline silicon quasi square sheet or the strip-shaped right-angle silicon monocrystalline sheet and monocrystalline silicon square sheet, and the using ratio of the monocrystalline silicon rod can be increased.

The invention discloses a full-automatic light chasing clothes hanger, and solves the problem that a clothes hanger has a poor airing effect and cannot automatically collect clothes in rainy and windy weather in the prior art. The full-automatic light chasing clothes hanger comprises a hanger integrated with a single chip microcomputer, a raindrop sensor and an atmospheric pressure sensor; the hanger is provided with a screw rod driven by a step motor; the screw rod is in threaded connection with a sliding table; the bottom of the sliding table is fixedly provided with a clothes plate; the clothes plate is provided with a direct-current gear motor; the output end of the direct-current gear motor is provided with a hook; the hook is integrated with a photosensitive sensor for controlling the direct-current gear motor; the raindrop sensor, the atmospheric pressure sensor and the like are controlled by the single chip microcomputer. According to a sunflower principle, the full-automatic light chasing clothes hanger can automatically adjust an angle along with the sunlight so as to allow clothes to have the maximal light receiving area; by an intelligent design, the full-automatic light chasing clothes hanger has a function of automatically collecting the clothes in windy, rainy and other special weather. The clothes hanger has a higher intelligent level and better clothes airing effect, and the efficiency of airing the clothes is greatly improved.

The invention provides a light-emitting unit and a sideward light emitting type liquid crystal display with the light-emitting unit. The light-emitting unit comprises a first light-emitting assembly. The first light-emitting assembly comprises a substrate and an LED packaging body arranged on the first surface of the substrate. The light-emitting unit further comprises a second light-emitting assembly. The second light-emitting assembly comprises a transparent pipe and quantum dot material. The transparent pipe comprises pipe walls which include the arc-shaped inner wall and the arc-shaped outer wall, and a pipe cavity defined by the arc-shaped inner wall. The pipe walls extend in the direction parallel to the first surface. The side, facing towards the substrate, of the arc-shaped outer wall is in a wavy shape. The wavy shape is symmetrical with the perpendicular face, passing through the central light-emitting point of the first light-emitting assembly and perpendicular to the first surface, as the symmetrical face. The pipe cavity is formed along the symmetrical face. The quantum dot material is arranged in the pipe cavity. The side, facing towards the substrate, of the arc-shaped outer wall is in a wavy shape, and therefore the light receiving area of quantum dots is enlarged, the utilization rate of the quantum dots is increased, the luminous efficacy of the light-emitting unit is improved, and work stability of the quantum dots is improved.

An optical fiber transmission device based on hollow light guiding cone coupling for vacuum-transmitting high-capacity laser is provided. A hollow light guiding cone is connected to the input end of the optical fiber, and small injection light spots are obtained by the hollow light guide cone to implement laser optical fiber coupling transmission. The hollow light guiding cone and the interior of the optical fiber are vacuumed or injected with inert gas to enlarge laser capacity of the optical fiber transmission system and enhance output beam quality. The invented device enlarges the lighted area on the laser input end surface effectively, reduces laser power density of the input end surface, and lowers laser damage probability. Linear and nonlinear wastage is decreased by vacuuming the laser transmission path, and the transmission efficiency of the optical fiber transmission system is increased. The invented device is provided with a simple structure, strong innovation and an evident effect.

The invention discloses a method for improving photoelectric conversion efficiency of a crystal silicon solar battery. The method is characterized in that: based on the conventional crystal silicon solar battery process, high-doped parallel linear arrays are formed on the surface of an emitter by adopting processes such as screen printing or local laser annealing and the like; and the high-doped parallel linear arrays are crossed with fine grids of a metal electrode in a vertical or certain angle mode. The method improves the ohmic contact of the metal grid electrode and silicon, and meanwhile reduces the number of the required fine grids so as to reduce the shading area and improve the photoelectric conversion efficiency of the crystal silicon solar battery. The method has low equipment investment, does not need to change other conventional process equipment, and is suitable for large-scale industrialized production.

The invention discloses a high-efficiency crystalline silicon cell with a next-generation structure and a manufacturing method for the high-efficiency crystalline silicon cell, and belongs to the field of crystalline silicon solar cells. The method comprises: a silicon oxide passivation step of forming a layer of silicon oxide film on the phosphorus-doped surface of a P-type silicon chip; an aluminum oxide passivation step of forming a layer of aluminum oxide film on the undoped surface of the P-type silicon chip; a metal wrap through (MWT) technology step of leading the anode of the cell to a back surface by adopting laser boring; and a new grid line formation step of adopting electroplating and sputtering. By the cell and the method, MWT is effectively combined, and the passivation of double film layers on a front surface and the passivation of aluminum oxide on the back surface are realized; due to the adoption of novel cell formation schemes such as electroplating, sputtering and the like, dependence on screen printing silver paste is overcome, and simultaneously resistance produced by electrodes is decreased; and the efficiency of a P-type monocrystalline cell can be improvedto over 20 percent, and the efficiency of a P-type polycrystalline cell can be improved to over 18 percent.

The invention relates to a solar battery, in particular to a back contact heterojunction solar battery based on an N-type silicon slice. According to a back face feature, the back contact heterojunction solar battery is divided into an N-type region and a P-type region, wherein the N-type region forms an N+a-si / i-a-si / N-c-si / N+c-si heterojunction structure; and the P-type region forms an N+a-si / i-a-si / N-c-si / N+c-si / i-a-si / P-a-si heterojunction structure. In the solar battery, the light attenuation phenomenon of the conventional P-type crystal silicon solar battery can be avoided; the solar battery has higher spectral response; the thickness of the solar battery is greatly reduced compared with that of the conventional crystal silicon solar battery; electrodes are all printed on the back face of the battery, so the problem that the front electrode of the conventional solar battery blocks light is solved; therefore, the conversion efficiency of the solar battery is improved greatly; by a low-temperature sintering process, a production process is simplified greatly and production cost is reduced; and the solar battery is applicable to industrialized production.

The invention discloses a crystalline silicon solar Metal Wrap Through (MWT) battery and a manufacturing method thereof. The MWT battery is characterized in that conduction of an upper punched electrode and a lower punched electrode is realized by a unique splay distributed punching way; after a bare wafer is punched, steps of wool making, dispersing, Phosphosilicate Glass (PSG) removing, Plasma Enhanced Chemical Vapor Deposition (PECVD), silk screen printing, sintering and laser isolation are carried out, wherein the silk screen printing step is specifically as follows: printing a back positive electrode and a back negative electrode simultaneously; printing a back electric field; and printing front grid lines and front pore filling grid lines simultaneously. Mutual connections of battery pieces are all realized on the back through a traditional welding technique, and the back negative electrode (or the back negative electrode) of the battery piece is serially welded with the back negative electrode (or the back negative electrode) of the battery piece, thus realizing the high compatibility of the manufacturing method with the traditional assembling technique and solving the problem of the MWT battery on the market at present in high assembling cost; and the light shading area of the surface of the battery is reduced from 5-7% of the traditional H-type battery to about 3% of the MWT battery, so that the purposes of increasing the efficiency and reducing the cost are achieved.

The invention relates to a thin film solar cell assembly and a fabrication method thereof, and specifically relates to an interconnected flexible solar cell and a fabrication method thereof. The flexible solar cell comprises at least two flexible solar cell units. Each flexible solar cell unit comprises a flexible cell substrate, a semiconductor material layer and a light receiving layer which are stacked successively. The light receiving layer is provided with a conductive bus bar. In two adjacent flexible solar cell units, the edge of the light receiving layer of one flexible solar cell unit is overlapped with the edge of the flexible cell substrate of the other flexible solar cell unit. A conductive connection structure is arranged between the conductive bus bar on the light receiving layer and the flexible cell substrate. The invention further discloses a fabrication method of the interconnected flexible solar cell. According to the invention, the advantage of easy process operation can be realized, the ohmic contact is easy to form, the light receiving area of the solar cell can be increased, and the advantage of good safety performance can be realized.

A solid state imaging apparatus includes a plurality of photoelectric conversion sections formed in an imaging area of a silicon substrate, and an embedded layer embedded in an isolation trench formed in at least one part of the silicon substrate located around the photoelectric conversion sections. The embedded layer is made of an isolation material having a thermal expansion coefficient larger than silicon oxide and equal to or smaller than silicon.

The invention discloses an MWT solar cell module in which only one electrode of each MWT solar cell is provided with a back main gate for being connected with a corresponding fine gate line. The back main gate guides current to front main gate of the corresponding MWT solar cell by virtue of a plurality of small holes passing through the corresponding MWT solar cell from top and bottom. The other electrode of each MWT solar cell has a fine gate and no main grid. The MWT solar cell module of the invention does not have any gate line on the front side to shield the light, and there is no gap between the MWT solar cells so that the efficiency of the module is improved. Since a plurality of cells are divided, the current of each cell strings is reduced so as to decrease the impact of thin gate line resistance loss, thereby reducing the consumption of silver paste and increasing the fill factors the cells and the MWT solar cell module.

The present invention is biophotosynthetic reactor apparatus and process for producing micro algae. Inside one transparent photosynthetic greenhouse, there are at least one closed transparent circulating pipeline unit with at least one layer of sealed circulating pipes made of high energy converging light-converting RE material, and light-converting plates or films of high energy converging light-converting RE material. Inside the sealed circulating pipes, chlorella is cultured. The present invention has full utilization of natural illumination, capacity of avoiding hetero microbe contamination, effective control of temperature and CO2 addition and high chlorella yield and quality.

The invention discloses a chicken and duck mixed ecological culturing technical method under rice ladder-type cultivation, and belongs to a culturing method. The method comprises the following steps of: forming ridges in a rice field with enough base fertilizer; after the rice is cultivated for 3 to 7 days, putting 15 to 20 young ducks of 20 to 40 days into the rice field; keeping a water layer of over 5 centimeters for a long term in a ditch between two ridges; at the tillering final stage of the rice or at the differentiation initial stage of young ears, putting 15 to 20 chickens of 35 to 45 days into the rice field; and from the growth stage to the grain filling stage of the rice, taking back the chickens and the ducks in time from the field. The method has the advantages that: the land area is fully utilized, and the light area is increased; the chickens are fed movably on the ridges, the ducks are fed movably in the ridge ditches, and the rice is grown on the ridges; chicken manure and dust manure are directly returned to the field, and the application amount of inorganic fertilizer is reduced; the residue amount of the pesticide in the rice and the soil is reduced; the water is saved; and the added value of the rice is increased, and the income of peasants is improved.

The invention discloses an aluminum alloy welding-free and roofing-tile solar collector, wherein, a collecting board is integrated with a heat-exchanging container; the solar collector is a section material with a semi-circle and tubular-shaped transect, the upper part of which is cambered and the lower part of which is flat, and connected with a plurality of aluminum alloy pipes which are connected with each other in parallel; the sunny side of the solar collector is coated with a selective heat absorption coating; water pipes which are arranged at the two sides of the solar collector and connected with the pipe section material are metal water pipes that are divided into an upper part and a lower part and has a pipe section material interface; the pipe section material and the water pipe are connected firmly by bolts and sealed by a sealant, and the upper part and the lower part of the water pipe are connected firmly by the bolts and sealed by the sealant; a glass cover plate is arranged on the pipe section material and the water pipe; a thermal insulation layer is arranged below the pipe section material and the water pipe; borders enclose the solar collector into a sealed whole at the periphery and extend out of regulas in all directions on the plane of the glass cover plate; the regulas on the left and right rise upwards so that the solar collection has the function of a large insulation roofing tile. The solar collector has the advantages of high heat collection efficiency, low price and long service life, basically requiring no maintenance, and being integrated with buildings and beneficial to scale production.

The invention relates to a solar battery, in particular to a back contact heterojunction solar battery, comprising a transparent conducting film TCO, a P-a-Si amorphous silicon film, an i-a-Si intrinsic amorphous silicon film, an N-C-SiN type crystalline silicon, an i-a-Si intrinsic amorphous silicon film, an N-a-SiN type amorphous silicon film, a penetrative type back electrode and a back electrode which are overlapped in sequence from top to bottom. The solar battery can avoid the photoconduced attenuation phenomenon of the conventional P-type crystalline silicon solar battery, the back contact electrode reduces the contact resistance, and effectively reduces the shading ratio of a light-receiving surface, thereby increasing the current collection rate and improving the conversion efficiency of the solar battery; as the temperature coefficient is low, the back contact heterojunction solar battery is suitable for a high temperature environment; and the low-temperature process simplifies the production process greatly and reduces the production cost, so that the back contact heterojunction solar battery is suitable for industrial development.

The invention relates to a light guide plate and a lateral incident type backlight module. The light guide plate is provided with a light receiving surface which is opposite to a light source and positioned on at least one side of the light guide plate, and a light emergent surface adjacent to the light receiving surface, wherein the light receiving surface is provided with a plurality of horizontal grooves or horizontal embossed strips extending along the thickness direction of the light guide plate; the plurality of horizontal grooves or horizontal embossed strips are arranged along the length direction or width direction of the light guide plate; and the light receiving surface is also provided with longitudinal grooves or longitudinal embossed strips extending along the length direction or width direction of the light guide plate. In the invention, a light beam emitted from the LED light source is incident into the light guide plate and then a divergence angle of the light beam is increased or maintained, so as to shorten a dark band on the light emergent surface of the light guide plate, and increase a visible area of a liquid crystal display; in addition, the longitudinal grooves or longitudinal embossed strips are additionally arranged, so that the structure of the light receiving surface of the light guide plate can be more complicated, and the light receiving area of the light guide plate is increased, thus further improving the rate of incidence of light rays, and the light emitting uniformity of the backlight module.

The invention belongs to the field of crop planting, in particular to a high-efficiency corn cultivation method in saline-alkali land. The high-efficiency corn cultivation method in the saline-alkaliland includes the following specific cultivation steps: soil improvement, flat land preparation and application of base fertilizer, corn sowing and film covering, irrigation and fertilization. The method achieves the aim of improving corn emergence rate, seedling preservation rate, water and fertilizer utilization efficiency and further improving corn yield by improving the corn planting method and optimizing the irrigation and fertilization system, breaks through the technical bottleneck of difficult corn planting and improvement in saline-alkali land in low-lying areas, and can play a technical supporting role in efficient improvement and utilization of saline-alkali land and improvement of ecological environment. On the one hand, ridge film furrow planting can effectively reduce the evaporation and consumption of soil moisture, and thus water collection and moisture preservation are favorable, so that crop yield and water use efficiency are improved; on the other hand, the utilization of groundwater can be further promoted, the groundwater level is lowered, and the phenomenon of soil salinization is reduced.

The invention relates to a method for preparing hidden-type emitter silicon solar cells, which adopts a quadratic diffusion process. The method comprises the following steps: 1. laser boring; 2. cleaning, radiation damage removing and suede preparation; 3. diffusion; 4. hiding launching area; 5. emitter area corrosion and periphery joint removing; 6. hiding removing; 7. oxidizing and surface passivation; 8. screen printing electrode; and 9. sintering. The method can prepare the hidden-type emitter silicon solar cells.

A pontoon and water flow power generation combined power station comprises a pontoon. A belt hydraulic engine type water flow power generation device, a solar power generation device and / or wind driven power generation device are arranged on the pontoon, and the belt hydraulic engine type water flow power generation device is provided with an automatic working water level regulating unit, a super-flood preventing unit and a float cleaning unit. A belt hydraulic power generator, a magnetic suspension wind driven power generator and a solar power generator are assorted mutually and are integrated with the shore supply to realize interaction and compensation, and specifically, power generated from flood and / or wind and solar energy in peak periods is fed back to the shore supply, and the shore supply resupplies power for the pontoon when in off-peak periods of flood and / wind and solar energy, so that uninterrupted power supply is formed, and the multipurpose pontoon with new clean energy self-generating devices is assembled. Besides, automatic control and dispatching of various power supplies can be realized, and accordingly the pontoon and water flow power generation combined power station has the advantages of operational simplicity, safety and reliability, high efficiency, adaptability to non-professional management, and can be used as a composite marine facility with double functions of the pontoon and the power station or can be used as a special shore power station utilizing integral energy.