37results about How to "Improve light receiving rate" patented technology

The invention discloses a tubular photobioreactor for the large-scale culture of microalgae, which comprises a photoreaction tube, a light source system, an algal liquid circulation system, a temperature regulation system, a PH regulation system, a dissolved oxygen regulation system, and a control panel; the control panel is electrically connected to the temperature regulation system, the PH regulation system, the dissolved oxygen regulation system, the light source system and the algal liquid circulation system; the tubular photobioreactor further comprises a filter screen for blocking foreign matters and a reflector capable of increasing the illumination intensity of the photoreaction tube; the filter screen is arranged in a passage connecting the liquid outlet of the photoreaction tubewith the algal liquid circulation system, and the reflector is arranged at a position opposite to the position of the light source system. The invention not only effectively decreases the probabilityof the algal liquid circulation system being injured, but also effectively increases the light receiving rate of the bottom and side surfaces of the photoreaction tube, so that the number of LED (light-emitting diode) light sources used at night is reduced, consequently, energy can be saved, and the production cost is reduced.

The present invention discloses an imaging lens system. The imaging lens system includes, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The second lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has positive refractive power. The fifth lens element with negative refractive power has an image-side surface being concave in aparaxial region thereof. The sixth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof.

A light guide includes a body transmittable to light and a plurality of light guiding elements. The body includes a first end face on an end thereof. The body further includes a light emitting portion, a deflecting portion, and two lateral sides. The light emitting portion and the deflecting portion are opposite to each other. Each of the two lateral sides is connected to the light emitting portion and the deflecting portion. The first end face is connected to the deflecting portion and each of the two lateral sides. Each light guiding element includes a curved face. The curved face is a conical surface or a part of the conical surface. The curved face is coupled to the deflecting portion. The light guiding elements can be arranged on the deflecting portion in one or more rows to control the light output directions and to reduce the illuminating angle.

The invention discloses an electrochemiluminescent imaging device which comprises an object lens, a light transmission channel, a single-photon detection electron multiplication CCD (charge coupled device) and an electrochemiluminescent generator, wherein the electrochemiluminescent generator comprises an ITO (indium tin oxide) electrode, a silver electrode and a voltage generator; the object lens, the light transmission channel and the single-photon detection electron multiplication CCD are connected in sequence; the ITO electrode is connected with the positive electrode of the voltage generator; the silver electrode is connected with the negative electrode of the voltage generator. The invention further discloses applications of the electrochemiluminescent imaging device to visual detection on hydrogen peroxide, hydrogen peroxide leaking from the surface of single cells and cell surface molecules. The electrochemiluminescent imaging device is simple in composition, high in detection flux, easy to operate and high in luminous efficiency, and can perform the parallel quick detection.

The invention discloses a high-yield pollution-free cultivation method for corns. The high-yield pollution-free cultivation method comprises the following steps: (1) scientific land preparation; (2) seed selection and treatment; (3) reasonable planting; (4) field management; (5) timely harvesting. According to the high-yield pollution-free cultivation method for corns, by reasonable land preparation, seed selection, species planting layout design and scientific pest damage prevention and treatment, the light interception rate of a corn plant is increased, the morbidity caused by diseases and insect pests is reduced, the harvested corns are high in yield, seeds are full, and the contents of pesticides and chemical fertilizers are small; the harvested corns have the characteristics of high yield, no pollution and suitability for large-range planting and popularization.

The invention discloses a plant growing frame which relates to the technical field of planting. The plant growing frame comprises cement reinforcing steel bar columns, wherein a seine is arranged among the cement reinforcing steel bar columns. The plant growing frame is characterized in that a transparent mesh enclosure is arranged among the cement reinforcing steel bar columns above the seine. The arrangement of the transparent mesh enclosure is not only beneficial to photosynthesis, but also prevents flybirds and winged insects from eating leaves and melon and fruit effectively, thereby improving the quality and yield of the product.

The embodiment of the present invention discloses a component for improving the power generation efficiency of N-type monocrystalline silicon photovoltaic cells, including: a back plate; a lower adhesive film on the back plate, and the lower adhesive film includes a first adhesive film layer, a second The adhesive film layer and the reflective film layer between the first adhesive film layer and the second adhesive film layer, wherein the reflective film layer is formed by mixing polyhedral glass in the film material; Photovoltaic cells arranged at intervals; adhesive film on photovoltaic cells; glass plate on adhesive film. Polyhedral glass is mixed in the adhesive film material to form a reflective film layer in the lower adhesive film. Since the polyhedral glass in the reflective film layer has multiple reflective surfaces, the refractive index of sunlight can be effectively improved, and the reflective film layer will After multiple reflections and refractions, sunlight enters the back of the photovoltaic cell, thereby increasing the light receiving rate on the reverse side of the photovoltaic cell, thereby improving the power generation efficiency of the photovoltaic cell.

The invention provides a special detection cabinet for a performance test of solar cells. The special detection cabinet comprises detection boxes, a slide block round rail and a battery panel mountingneck; the device is provided with three groups of detection boxes up and down; the three groups of detection boxes are connected together by four groups of hinged supporting rods; a group of slide blocks is slidably connected to the inner sides of the tops of the detection boxes; a supporting connecting rod is hinged on the left and right sides of the slide block and a test mounting plate together; and multiple groups of fixing blocks are slidably connected to the test mounting plate. The device can be conveniently stored due to a foldable structure, meanwhile the light blockage is reduced byunfolding and deforming the device, the angle of the solar cell panel is adjusted by the overturnable test mounting plate, the sunlight is kept to be vertical to a battery panel pipeline, thereby improving the detection precision, and meanwhile ensuring convenient mounting, fast mounting and dismounting of the solar cell panel can be achieved, and the adjustment is convenient.

The invention discloses a light guide element and a solar cell module. The light guide element is placed on the edge of the solar cell assembly. A first gap is formed between the outer edge of an edge solar cell and the inner edge of a frame. The light guide element includes a plane of emission, a plane of incidence and a plane of reflection. The plane of emission receives incident light entering the first gap, and refracted light is selected from the following paths after the incident light enters the light guide element: path 1, the refracted light is emitted from the plane of emission to the edge solar cell; path 2, the refracted light is reflected on the plane of reflection and then emitted to the edge solar cell; and path 3, the refracted light is reflected by the plane of reflection at least once to the plane of incidence and then is emitted to the edge solar cell after at least one total reflection is performed by the plane of incidence. Through the light guide element, light emitted to the gaps in the solar cell assembly can be guided to the solar cells, so the utilization rate of sunlight can be improved.

The invention relates to an offshore suspended photovoltaic platform and a power generation method thereof. The platform comprises a plurality of vertically arranged main rods, and a suspension device which is arranged on the main rod and is below sea level and has adjustable buoyancy. The plurality of main rods are connected through a connecting rod. A plurality of bearing blades are distributed around the main rod. A plurality of photovoltaic panels are arranged on the upper surfaces of the bearing blades. The plurality of bearing blades can vertically rotate around the main rods as rotation centers and abut against one another, thereby forming a closed chamber so that the photovoltaic panels are arranged in the closed chamber. According to the offshore suspended photovoltaic platform and the power generation method thereof, offshore photovoltaic power generation equipment is sealed and sunk under the water level in a time period when solar energy cannot be used for generating power at night or on the condition of adverse external weather, thereby reducing time of corrosion and ocean wave vibration of the photovoltaic power generating equipment. Because the night occupies about one half of one day, the offshore suspended photovoltaic platform and the power generation method thereof can effectively half corrosion time and vibration time of the photovoltaic power generating equipment, thereby greatly prolonging service life of the photovoltaic power generating equipment.

The invention discloses a light condensation type power generation and heat supply integrated system. The light condensation type power generation and heat supply integrated system comprises a water tank and a glass outer cover. The bottom of the water tank is provided with supports. The water tank is provided with a water outlet pipe and a backflow pipe. The top end of the water tank is providedwith a heating plate. The top end of the heating plate is provided with a solar cell panel. One side of the heating plate is provided with a first storage battery. A third storage battery is arrangedon the other side of the heating plate. A second storage battery is arranged on one side of the third storage battery. The other side of the third storage battery is provided with a fourth storage battery. The glass outer cover is arranged at the upper end of the water tank. The top end of the glass outer cover is provided with an arc net. According to the light condensation type power generationand heat supply integrated system, a plurality of lens can concentrate solar energy, the sunlight illuminates the solar cell panel, the illumination rate of the solar cell panel is larger, the glass outer cover reflects diffused light, so that the solar energy cannot be scattered, and therefore the power generation efficiency is improved; besides, water in the water tank can be heated through theheating plate, hot water circulates to families for heating through water pipes; and the light condensation type power generation and heat supply integrated system is simple in structure and convenient to popularize.

The invention discloses an indoor formaldehyde content detection device and a use method thereof, and belongs to the field of formaldehyde detection. According to the indoor formaldehyde content detection device and the use method thereof, in the scheme, a formaldehyde purification device rotates in a base by switching on a power supply and turning on a motor; a detection direction is adjusted, alight receiving rate in the formaldehyde purification device is improved through strip-shaped light inlet holes; light enters the formaldehyde purification device through the strip-shaped light inletholes, and a temperature in the formaldehyde purification device is increased through sunlight; a shape of a shape memory spring in a support tube is changed through a temperature change; a telescopicrod enables a top block to slide up and down in the support tube through the shape memory spring to extrude a hydroxylamine phosphate solution; and the hydroxylamine phosphate solution is dispersed into a connecting tube through the formaldehyde detection device, enters chromogenic adsorption cotton and is mixed with formaldehyde ions in adsorption holes to change colors so that the detection offormaldehyde in the air is directly observed.

The invention relates to the technical field of solar panels and in particular to a solar panel bracket, comprising a base, two support rods symmetrically connected to the upper end of the base, a rotating rod rotatably connected to the upper sides of the adjacent ends of the two support rods, and a solar panel body fixedly sleeving the rotating rod. The front ends of the two sides of the solar panel body are drivingly connected to adjustment plates through pins. The adjustment plates are provided with strip-shaped holes along the length direction. In the strip-shaped holes, lead screws fixedto the side walls of the support rods are slidably connected, and are threadedly sleeved with nuts for fixing the adjustment plates. The solar panel body is well protected, the transportation safety is improved, and the solar panel bracket has good practicability.

The invention discloses a garden solar LED lamp with cleaning and dehumidifying functions. The lamp comprises a lamp body and a base body, and a cleaning mechanism is arranged at the upper end of thelamp body; a rotating cavity is formed in the lamp body; transmission cavities which are communicated with the rotating cavity and are provided with upward openings are symmetrically arranged above the rotating cavity front and back; a gear cavity is formed below the rotating cavity; a moving cavity is formed below the gear cavity; a driving mechanism is arranged between the gear cavity and the moving cavity; a mounting plate is fixedly arranged on the outer side of the lamp body; four solar power generation panels are annularly arranged in the mounting plate; and a cleaning water tank is fixedly arranged in the lamp body. A water outlet pipe is fixedly arranged at the left end of the cleaning water tank, a water pump is fixedly arranged on the water outlet pipe, a supporting plate is fixedly arranged at the lower end of the lamp body, a dehumidification cavity with an upward opening is formed in the base body, a dehumidification mechanism is arranged in the dehumidification cavity, areciprocating cavity is formed in the right side of the dehumidification cavity, and a reciprocating mechanism is arranged in the reciprocating cavity.

The invention discloses an agricultural environment adjusting device for a seedling growing greenhouse, and belongs to the field of agricultural planting equipment. A first electromagnet is fixed to the top of an upper cover plate, an ultrasonic sensor is fixed to the top of an open cover plate, and a first electromotor is fixed to the middle of a second bracket; an entrance and exit door is located at the lower left corner of a left baffle, daylighting film is arranged between the left baffle and a right baffle, and a reflective device is fixed to a back baffle; a controller is arranged belowthe reflective device, a heater is fixed to the right side of a heat insulation bracket, and a temperature control device is fixed to the top of a base. According to the agricultural environment adjusting device, a temperature and humidity sensor and an illumination sensor detect temperature and humidity conditions of the air and illumination conditions of seedlings in the greenhouse, the controller drives the temperature control device to control the temperature inside the greenhouse so that the temperature can keep constant, the reflective device increases illumination receiving of the seedlings, the process of artificially monitoring the greenhouse is replaced, manpower cost is reduced, and the environment inside the greenhouse can be always beneficial to seedling growth.

The invention relates to the technical field of hickory nut planting, and particularly discloses a branch position adjusting device for hickory nut planting, the branch position adjusting device comprises a fixing ring, the top of the fixing ring is connected with a top ring through an adjusting mechanism, and the bottom of the top ring is connected with a collecting mechanism through a telescopic mechanism. According to the invention, a plurality of righting plates are used for supporting hickory branches and trunks, so that the phenomenon that the hickory branches and trunks grow obliquely and are tangled with adjacent hickory branches and trunks can be effectively prevented, and the problem that the fruiting rate of hickory trees is influenced due to the fact that the hickory branches and trunks are righting by trimming in a traditional righting mode is solved; the righting plate spirally moves upwards along with the growth process of the hickory branches, so that the hickory branches can be supported upwards, the hickory branches grow upwards in a horn mouth shape, and the situation that the hickory branches grow obliquely is avoided; meanwhile, rainwater can be absorbed, collected and stored in a water receiving box through a second water absorption sponge on the side face of the centralizing plate, and rainwater in rainy and snowy weather can be received and collected.

A functional rack for an installation of a solar energy heat collection pipe under a sill relates to the field of integration of a solar energy heat collector and a building body. The functional rack comprises a drain tank (1) and a maintenance window (2), wherein the upper ends of the left and right ends of the drain tank (1) are respectively provided with a left hollow supporting column (4) and a right hollow supporting column (5); a window seat (6) is mounted on the upper part of the left hollow supporting column (4) and the upper part of the right hollow supporting column (5); a window frame (3) is disposed in a framework formed by the left hollow supporting column (4), the right hollow supporting column (5), the window seat (6) and the drain tank (1); the window frame (3) is in a mechanical connection with the left hollow supporting column (4), the right hollow supporting column (5), the window seat (6) and the drain tank (1); the functional rack is further equipped with the maintenance window (2); the left hollow supporting column and the right hollow supporting column are respectively provided with a hole (12) for an installation of the solar energy heat collection pipe; the two holes are corresponding to each other; a cylindrical wall of the right hollow supporting column (5) facing indoor is provided with a detachable instrument panel (13); instrument holes (8) are formed in the instrument panel (13); the lower part of the cylindrical wall facing indoor is provided with a water inlet hole (9), a water outlet hole (10) and a circulating water hole (11); and installation pins (7) are installed on and under the left and right hollow supporting columns (4,5). Technical effects of integration between the solar energy collection pipe and the building, indoor installation and convenient maintenance can be achieved.

The invention discloses a solar power generation universal optical collector. Two ends of one side of the light facing surface of a mirror holder (1) are vertically fixed with two rotating arms (4) onwhich rotating shafts (5) are fixed; the rotating shafts (5) are correspondingly mounted on a pillar (3); one of the rotating arms (4) is fixed with a big gear wheel (6) by taking the rotating shaft(5) as the axis, and the big gear wheel (6) is meshed with a drive pinion (7) arranged on a rotating device of the mirror holder; illuminators (2) are arranged parallel to the central lines of the rotating shafts (5) and articulated on the mirror holder (1) in rows; the back of each illuminator (2) is provided with a regulating rod (11); and in each row, the regulating rod (11) arranged at the back of each illuminator is connected with a mirror body drive mechanism (8). The optical collector has simple structure, convenient regulation, high accuracy in tracing sunlight, low power consumption,realization of universal light collecting, high comprehensive utilization rate of optical energy, high generated power, high investment return rate and surely considerable application prospect.

The invention discloses an electrochemiluminescent imaging device which comprises an object lens, a light transmission channel, a single-photon detection electron multiplication CCD (charge coupled device) and an electrochemiluminescent generator, wherein the electrochemiluminescent generator comprises an ITO (indium tin oxide) electrode, a silver electrode and a voltage generator; the object lens, the light transmission channel and the single-photon detection electron multiplication CCD are connected in sequence; the ITO electrode is connected with the positive electrode of the voltage generator; the silver electrode is connected with the negative electrode of the voltage generator. The invention further discloses applications of the electrochemiluminescent imaging device to visual detection on hydrogen peroxide, hydrogen peroxide leaking from the surface of single cells and cell surface molecules. The electrochemiluminescent imaging device is simple in composition, high in detection flux, easy to operate and high in luminous efficiency, and can perform the parallel quick detection.

The invention discloses a novel seedling raising device for gardens and relates to the technical field of seedling raising in gardens. The novel seedling raising device for gardens comprises a machine body, an upper surface of the machine body is fixedly connected with a water storage tank, a bottom surface of the water storage tank fixedly communicates with an electric water valve, a bottom end of the electric water valve penetrates through an upper surface of the machine body and extends into the machine body, a supporting plate is fixedly connected to an inner side wall of the machine body, an inclined water filtering block is fixedly connected to an outer surface of the supporting plate, water passing holes are formed in an upper surface of the inclined water filtering block, a discharging pipe fixedly communicates with an outer surface of the machine body, the discharging pipe and the inclined water filtering block are located on the same horizontal line, a cultivation pot is fixedly connected to an inner side wall of the machine body, water leakage holes are formed in a bottom face of the cultivation pot, and a tempered glass window is fixedly embedded in an outer surface of the machine body. The seedling raising device for gardens has advantages that rainwater can be collected in cloudy and rainy days and a sunlight receiving rate of seedlings in the device is sufficient.

The invention discloses a garden solar LED lamp with cleaning and dehumidification functions, which includes a lamp body and a base body. The upper end of the lamp body is provided with a cleaning mechanism. The lamp body is provided with a rotating cavity. The upper part of the rotating cavity is symmetrical in front and back. The ground is provided with a transmission cavity that communicates with it and opens upward. A gear cavity is provided below the rotating cavity. A moving cavity is provided below the gear cavity. A driving mechanism is provided between the gear cavity and the moving cavity. A mounting plate is fixed on the outside of the lamp body. Four solar power generation panels are arranged in an annular shape on the mounting plate. A clean water tank is fixed on the lamp body. A water outlet pipe is fixed on the left end of the clean water tank. The outlet pipe is fixed on the left end of the lamp body. A water pump is fixed on the water pipe, a support plate is fixed on the lower end of the lamp body, a dehumidification chamber with an upward opening is provided in the base body, a dehumidification mechanism is provided in the dehumidification chamber, and a reciprocating chamber is provided on the right side of the dehumidification chamber. , a reciprocating mechanism is provided in the reciprocating cavity.

The invention discloses a solar cell and a preparation method thereof. The preparation method of the solar cell comprises the following steps: selecting a corresponding substrate; perforating the substrate or not perforating the substrate according to the type of a cell to be prepared; carrying out texturing on the surface of the substrate and carrying out diffusion treatment to form a corresponding diffusion layer; carrying out further preparation according to the cell type; and according to the cell type, covering a transparent conducting layer on at least one light receiving surface of theprepared solar cell. The solar cell can effectively improve photoelectric conversion efficiency, is simple and practicable and is convenient for industrial production.

The invention discloses a photovoltaic power station support system with an adjustable angle. The photovoltaic power station support system comprises a front stand column and a rear stand column; onesame support base is connected to the upper ends of the front stand column and the rear stand column in an inclination manner; a reflective assembly is arranged on the support base; and a double-sidedphotovoltaic power generation assembly is arranged above the reflective assembly and is in sliding connection with the support base. Compared with the prior art, the photovoltaic power station support system with adjustable angle and the photovoltaic power station have the following beneficial effects: the structure is designed reasonably; the stability and reliability are high; the area of the photovoltaic power generation assembly is increased and the front-side power generation rate of the photovoltaic battery is improved; and the light receiving rate and light emissivity of the circular emitting plate are enhanced, so that the back-side power generation rate of the photovoltaic battery is increased. In the photovoltaic power station, the multiple photovoltaic power station support systems are distributed and installed in an array and are fixedly installed with the ground by one same ground connecting beam, so that the strength is high and the cost is low; and the damage on the ground by the single installation is reduced and the long-term stable operation of the whole system is ensured.

The invention provides a reflective heat collection and energy storage type photo-thermal heating device for the northern countryside and belongs to the field of solar energy utilization. The reflective heat collection and energy storage type photo-thermal heating device comprises a plurality of light collection units arranged side by side at different heights. Each light collection unit comprisesa sliding rail and a plurality of heat collection devices. Each heat collection device comprises a first supporting frame and arc-shaped reflecting mirrors arranged on the first supporting frame. A U-shaped seat of each first supporting frame is arranged on a base. The lower end of each supporting column is arranged in the corresponding U-shaped seat. Each supporting column rotates in the corresponding U-shaped seat through a first angle adjusting device. The lower end of each adjustment lever is rotatably connected with the upper end of the corresponding supporting column through a second angle adjusting device. The upper end of each adjustment lever is fixedly connected with the bottom of the corresponding arc-shaped reflecting mirror. The bottom of each base is provided with an electric wheel which drives the corresponding sliding rail to move. A heating unit comprises a heating tower. Reflection rays of the multiple arc-shaped reflecting mirrors are aligned with the heating tower.A controller is used for transmitting executive commands. The reflective heat collection and energy storage type photo-thermal heating device can make full use of solar energy and improve the heatingefficiency.

The invention discloses a conduction film of second face of electrochromism inside rear-view mirror, wherein the conduction film contains high refractive index material as priming coat and ITO film as the second face of conduction material; or the conduction film contains double-layer high refractive index material as priming coat and ITO film as the second face of conduction material; or the conduction film is composed of three-layer high refractive index material as priming coat and ITO film as the second face of conduction material. The high refractive index is combination of SiN or SiC and Eu2O3 or WO3. The multiple high refractive index layers and film thickness of the invention guarantee passivation efficiency of silicon wafer surface, at the same time, the two-layer high refractive index thin has effect of PID resistance, and the design film has good anti-reflection effect, which increases light interception rate of the surface of silicon wafer.

The invention provides a special detection cabinet for a performance test of solar cells. The special detection cabinet comprises detection boxes, a slide block round rail and a battery panel mountingneck; the device is provided with three groups of detection boxes up and down; the three groups of detection boxes are connected together by four groups of hinged supporting rods; a group of slide blocks is slidably connected to the inner sides of the tops of the detection boxes; a supporting connecting rod is hinged on the left and right sides of the slide block and a test mounting plate together; and multiple groups of fixing blocks are slidably connected to the test mounting plate. The device can be conveniently stored due to a foldable structure, meanwhile the light blockage is reduced byunfolding and deforming the device, the angle of the solar cell panel is adjusted by the overturnable test mounting plate, the sunlight is kept to be vertical to a battery panel pipeline, thereby improving the detection precision, and meanwhile ensuring convenient mounting, fast mounting and dismounting of the solar cell panel can be achieved, and the adjustment is convenient.

The invention discloses a solar cell panel cleaning device which comprises a solar cell panel, a first supporting seat, a second supporting seat, a cleaning plate and a water pipe, the solar cell panel is obliquely arranged, a first support and a second support are arranged below the solar cell panel, and the first support is higher than the second support; the first supporting seat is fixed at the end part of the solar cell panel close to the side of the first support, a motor is fixed on the first supporting seat, and the motor is provided with a motor shaft; the second supporting seat is fixed at the end part of the solar cell panel close to the side of the second support; the cleaning plate is parallel to the solar cell panel and connected with the first supporting seat and the second supporting seat, the cleaning plate is connected with the motor shaft, and a brush is arranged on the side, close to the solar cell panel, of the cleaning plate; one end of the water pipe is located below the water surface line, and the other end is located on the solar cell panel close to one side of the first supporting seat. The device improves the power generation efficiency and the service life of the solar cell panel.

The invention discloses a silicon nitride anti-reflection film which uses three gases of N2, NH3 and SiH4 to coat a crystalline silicon solar cell with multi-layer interlaced changes under high-frequency electric shock, and belongs to the field of crystalline silicon solar cells. The invention comprises a silicon nitride anti-reflection film deposited on a silicon chip with alternately varying refractive index and film thickness. The refractive index is first small and then large, but the N value of the odd-numbered film layers decreases sequentially, and the N value of the even-numbered film layers also decreases sequentially. The film thickness is first thicker and then thinner (single-numbered film thickness, even-numbered film layer is thinner), and the value of the film thickness result of the process is inversely proportional to the refractive index value, that is, the number of single films is compared with the number of double-layer films. It will get thicker and thicker. According to the physical characteristics of the multi-layer anti-reflection film, the destructive interference of the alternating anti-reflection film has better transmittance, increases the absorption of light, and then generates more photogenerated electrons at the P / N junction, improving the photoelectric conversion efficiency .