47results about How to "Reduce light receiving area" patented technology

The invention relates to silver paste for a solar cell and a preparation method thereof. The silver paste comprises certain amounts of silver powder, turpentine and glass powder and fumed silica by mass percent, preferably nano methyl modified fumed silica. The silver paste further comprises a nonionic polymer surfactant which is a polyethoxyl/polypropoxy/polyethoxyl triblock copolymer. The silver paste which is prepared by mixing and stirring the above components according to a certain proportion and sequence and is used for the front of the solar cell has good thixotropy, improves the screen printing quality on the silicon wafer, improves the height-width ratio of the sintered screen printing silver wires and reduces the occupied sunlight area, thus improving the efficiency of the solarcell.

[Abstract]Considering further promotion of high output and miniaturization of a sensor element, it is an object of the present invention to form a plurality of elements in a limited area so that an area occupied by the element is reduced for integration. It is another object to provide a process which improves the yield of a sensor element. According to the present invention, a sensor element using an amorphous silicon film and an output amplifier circuit constituted by a thin film transistor are formed over a substrate having an insulating surface. In addition, a metal layer for protecting an exposed wire when a photoelectric conversion layer of the sensor element is patterned is provided between the photoelectric conversion layer and the wire connected to the thin film transistor.

The invention relates to sunlight signal acquiring devices in a high-precision tracking system. Each sunlight signal acquiring device comprises a substrate which is arranged on a sunlight receiving plane of a condenser and is provided with an internal-thread connecting base. The sunlight signal acquiring devices which are respectively formed by a group of photoelectric sensors are respectively arranged inside and outside the internal-thread connecting base on the substrate; a planoconvex lens is fixed by a fixing nut by connecting the upper end of a thread connecting tube, and the fixing nut, the thread connecting tube and the planoconvex lens are integrated into a whole body; and the lower end of the thread connecting tube is connected with the internal-thread connecting base. Due to the position distribution and the combination of the two groups of photoelectric sensors, the photoelectric sensors can be rough and fine adjusted after treating the acquired signal. Due to the adoption of the method of focusing and detecting the sunlight, the problem that the photoelectric sensors have low detection sensitivity if the solar radiation intensity is very weak is solved. Due to the adoption of the method of reducing the light intercepting areas of the photoelectric sensors, the problem that the photoelectric sensors have low detection sensitivity when the photoelectric characteristic of the photoelectric sensors affects the saturated zone if the solar radiation intensity is very strong is solved. The sunlight signal acquiring devices can supply correct signals to a post-processing circuit.

A solar cell module includes a circuit board and a plurality of solar cell elements. Each of the solar cell elements is partly fastened to the circuit board and is partly protrudent from the circuit board.

The invention relayes to a solid-state imaging device, a manufacturing method therefor, and an electronic device using the solid-state imaging device. The solid-state imaging device includes: a plurality of substrates stacked via a wiring layer or an insulation layer; a light sensing section that is formed in a substrate, of the plurality of substrates, disposed on a light incident side and that generates a signal charge in accordance with an amount of received light; and a contact portion that is connected to a non-light incident-surface side of the substrate in which the light sensing section is formed and that supplies a desired voltage to the substrate from a wire in a wiring layer disposed on a non-light incident side of the substrate. The solid-state imaging device could reduce the size of the solid-state imaging device without reducing the light receiving area.

The invention provides a multi-junction solar cell. The multi-junction solar cell at least comprises a bottom sub-cell and a top sub-cell, wherein the top sub-cell is located on the bottom sub-cell. The top sub-cell is only formed on a part of the surface of the bottom sub-cell so that the light receiving area of the top sub-cell can be reduced. When light enters the multi-junction solar cell, a part of the light is directly absorbed by other sub-cells below the top sub-cell, so that a current of the top sub-cell is reduced.

A solar panel of the present invention, above which a pointer mounted on a pointer shaft inserted in a through hole in a center portion of the solar panel moves, includes a plurality of solar cells arranged in a substantially circular shape, and these solar cells have been divisionally formed into a substantially spiral shape so that the pointer is positioned over two of the plurality of solar cells. Accordingly, the pointer can always be positioned over two of the plurality of solar cells, and therefore a decrease of light-receiving area due to the pointer can be distributed between the two solar cells. As a result, a decrease in the output current of the plurality of solar cells over which the pointer is positioned can be suppressed, and the output current of the entire plurality of solar cells can be improved.

A pruning method for the trees in a single-tree type forest features that the crown of each young tree is pruned to become conic shape in its early phase and then pruned to become cylindrical shape in its later phase or in its middle age phase while its branches are slightly pruned for improving its optical energy utilization rate.

The invention provides a three-dimensional concentrating solar cell system in which a sun tracking device is not required. The system comprises a plurality of spherical concentrating elements and a plurality of photovoltaic cells. Since the plurality of spherical concentrating elements are arranged to form a curved surface in sequence, the system is not required to perform tracking aiming at a light source, such as sun and the like, and sufficient power can be provided for application of a user.

The invention belongs to solar cell silver paste, and particularly relates to an organic carrier used for the solar cell silver paste and a preparation method for the organic carrier. The silver paste comprises the organic carrier used for the solar cell silver paste, and the organic carrier comprises the following materials in parts by weight: 70-90 parts of organic solvent, 5-15 parts of glass powder, 0.5-3 parts of hydrogenated castor oil, 5-15 parts of thickening agent, 0.1-0.8 parts of cationic surface active agent, and 3-6 parts of coupling agent. The preparation method for the organic carrier is simple, and the prepared organic carrier is efficient and high in consistency; by virtue of optimization of the organic carrier used for the solar cell silver paste, quite high linear moulding capability is achieved, the silk-screen quality of the silver paste on a silicon wafer is improved, the depth-width ratio of an electrode to a grid line after sintering can be improved and the occupied light-receiving area is reduced, thereby improving the efficiency of the solar cell.

A light condensing lens includes a plurality of lenses disposed side by side in a splitting direction of a view angle to condense incident light over a range corresponding to respective split portions of the view angle. The view angle is split in a direction orthogonal to an optical axis of the incident light.

The invention provides an optical coupling bidirectional thyristor element capable realizing quality stabilization and chip reduction. The bidirectional thyristor element has a semiconductor chip which forms a first photosensitive thyristor portion (12a) and a second photosensitive thyristor portion (12b) which are mutually separated on a semiconductor substrate (11). Each photosensitive thyristor portion has a PNPN portion. The bidirectional thyristor element also has a joint bonding pad electrically connected to an anode diffusion region (13) and a cathode diffusion region (15) and insulated from a control electrode diffusion region (14). The PNPN portions of the first and second photosensitive thyristor portions (12a, 12b) are substantially point-symmetrically configured relative to a center of the semiconductor chip, or substantially line-symmetrically configured relative to a line segment passing through the center and in parallel to one side. The joint bonding pad (18a) of the first photosensitive thyristor portion (12a) and the joint bonding pad (18b) of a second photosensitive thyristor portion (12b) are mutually separately configured on one end side and the other end side of the above line segment in the extending direction.

A photodiode (10) of the present invention has a p-type semiconductor region (11), an i-type semiconductor region (12), and an n-type semiconductor region (13). The channel length “L” of the photodiode (10) is determined by the source wiring films (8) formed by etching. This configuration provides a display device equipped with the plurality of photodiodes (10) having consistent properties.

Disclosed are an image sensor and a formation method thereof. The image sensor comprises a semiconductor substrate, a pixel device positioned in the semiconductor substrate, and a light filter matrixpositioned on the surface of the semiconductor substrate, wherein the light filter matrix comprises multiple minimum repetitive units; each minimum repetitive unit at least comprises a first green light filter and a second green light filter; and the light receiving areas of the first green light filter and the second green light filter are different. By virtue of the scheme disclosed in the invention, the dynamic range of the image sensor can be enlarged.

The invention provides a full-plastic integrated channel box solar heat collector. The full-plastic integrated channel box solar heat collector comprises a heat collecting channel box and two channel box end covers, wherein the heat collecting channel box is made of polycarbonate integrally and comprises a plurality of channel box units. Each channel box unit is a box body which is composed of five separate parallel thin films and two lateral surface thin films and has two open ends. Every two adjacent channel box units share one lateral surface thin film. A flat round pipe type heat collecting pipe is arranged on the third layer of parallel thin film of each channel box unit. The two channel box end covers are used for sealing the two open ends of the heat collecting channel box respectively and are integrated parts made of glass steel, and the section of each channel box end cover is rectangular. Each channel box end cover comprises a housing, a connecting pipe and a groove plate. The full-plastic integrated channel box solar heat collector is high in heat collecting efficiency, low in cost and convenient to manufacture. All the parts of the box bodies can serve as heat collecting performance components, and also have a function of taking part in strengthening the structure. The advantages of being small in material amount, light in weight, high in efficiency, long in service life, low in cost, high in yield, low in energy consumption and the like are achieved.

The invention discloses a novel Sabortus atmosphere laser radar based on a TDLAS (tunable diode laser absorption spectroscopy) technology. The novel Sabortus atmosphere laser radar can detect gas in the atmosphere in an infrared band. The radar comprises a first function generator, a laser driver, a diode laser, a second function generator, a collimation system, a receiving optical system, a lock-in amplifier, a data acquisition card, a PC terminal and a mechanical scanning probe device. The wavelength modulation spectrum technology (WMS) in the TDLAS technology is combined with the Saborne atmosphere laser radar technology, and the mechanical scanning probe device is used for replacing an image detector, so that the sensitivity and the resolution of the system are improved, the detection wavelength range is enlarged, and gas in the atmosphere can be detected in an infrared band.

The invention provides a silver paste-free grid line electrode structure distributed on conductive transparent oxide films on the front surface and the back surface of a heterojunction photovoltaic cell, and the characteristics of conductivity and low resistivity of the transparent conductive oxide films are utilized, so that main grid line electrodes and collection carriers are only arranged on the transparent conductive oxide films, and fine grid electrodes are not arranged any more. Low-temperature soldering tin alloy and the transparent conductive oxide films of the battery are welded through ultrasonic welding to form a main gate electrode. The grid line electrode structure of the heterojunction battery, which does not use silver paste and does not have a fine grid line electrode, is realized. The main gate electrodes are connected with the metal welding strips through welding or conductive adhesive bonding, and electrical connection between the adjacent heterojunction cells is realized through the metal welding strips, so that the heterojunction photovoltaic cell assembly is formed. Fine gate electrodes are omitted, the light receiving area of the cell shielded by the fine gate electrodes is reduced, and the cell efficiency is improved. Meanwhile, the main gate electrode of the cell is not made of silver paste any more, so that the production cost of the heterojunction photovoltaic cell is greatly reduced.

The invention provides a replacement control method of wedelia trilobata by utilizing microstegium ciliatum. The replacement control method comprises the following steps: planting microstegium ciliatum seedlings; cutting off upper ends of seedling stems; removing part of leaves and apical buds; and performing sufficient watering in a week after sowing or planting of microstegium ciliatum seedlings. The technical implementation is simple and convenient to operate and has low requirement for staff who implement the replacement control technique, replacement control on wedelia trilobata can be achieved through microstegium ciliatum, and the wedelia trilobata can be constantly controlled without specific management, and an excellent effect for conserving water and soil can be achieved, and theeconomic value of soil can be increased. Therefore, the replacement control method has great ecological value and social and economic values.

The invention provides a snow-proof solar photovoltaic panel, and relates to the field of solar equipment, the snow-proof solar photovoltaic panel comprises a roof body, the top of the roof body is fixedly connected with a plurality of snow melting mechanisms, the plurality of snow melting mechanisms are arranged at equal intervals, the two sides of the snow melting mechanisms are fixedly connected with mounting plates, and the mounting plates are fixedly connected with the roof body. The top of the mounting plate is fixedly connected with a photovoltaic panel body, and the top of the roof body is provided with a snow guiding mechanism used for guiding snowflakes to fall onto the snow melting mechanism. According to the snow-proof solar photovoltaic panel, during snowing, only a double-head motor needs to be started, the double-head motor drives a first bevel gear and a second bevel gear to rotate, and the first bevel gear and the second bevel gear drive a first lead screw and a second lead screw to rotate through a third bevel gear and a fourth bevel gear; and the first screw rod and the second screw rod rotate to drive the protective cover shell to move upwards until the first mounting seat and the second mounting seat are completely exposed, then the sound wave generator is started, and the sound wave generator emits sound waves.