208results about How to "Broad absorption spectrum" patented technology

A lithographic projection apparatus is disclosed. The apparatus includes a radiation system that provides a beam of radiation, and a support structure that supports a patterning structure. The patterning structure is configured to pattern the beam of radiation according to a desired pattern. The apparatus also includes a substrate support that supports a substrate, a projection system that projects the patterned beam onto a target portion of the substrate, a plurality of optical elements that form part of at least one of the radiation system, the patterning structure, and the projection system; and a cleaning device. The cleaning device includes at least one cleaning beam of radiation, and a gas. The cleaning device is configured to clean an individual optical element or a subset of the plurality of optical elements.

A laminated solar battery based on a perovskite battery and an HIT battery comprises a back metal electrode; the HIT battery which is manufactured on the back metal electrode; an ITO connection layer which is manufactured on the HIT battery; an electron transporting layer which is manufactured on the ITO connection layer; a perovskite active absorption layer which is manufactured on the electron transporting layer; a hole transporting layer which is manufactured on the perovskite active absorption layer; an interface modification layer which is manufactured on the hole transporting layer; a light facing surface transparent electrode which is manufactured on the interface modification layer; and a metal grid line electrode which is manufactured on the light facing surface transparent electrode, wherein the metal grid line electrode is located on the two sides of the center on the light facing surface transparent electrode. With the adoption of the laminated solar battery based on the perovskite battery and the HIT battery, the absorption spectrum can be expanded and light energy is converted into electric energy to the greatest extent, so that the photoelectric conversion efficiency of the perovskite solar battery is improved.

The invention relates to a preparation method of a rare-earth element doped modified hollow microsphere bismuth oxyiodide photocatalyst. The preparation method comprises the following steps: adding bismuth nitrate pentahydrate and nitrate of a rare-earth element into a solvent and sufficiently dissolving to obtain a bismuth nitrate solution containing the rare-earth element; under magnetic stirring, dropwise adding a potassium iodide solution at a uniform speed drop by drop; after finishing dropwise adding, continually carrying out the magnetic stirring to obtain a precursor solution; puttingthe precursor solution into a reaction kettle to react by adopting a solvothermal method; after finishing the reaction, cooling a product to room temperature and taking out the product; washing, drying in vacuum and grinding to obtain the rare-earth element doped modified hollow microsphere bismuth oxyiodide photocatalyst. The method provided by the invention is simple and feasible and has the characteristics of simple process, good experiment reproducibility, low production cost and the like; the prepared rare-earth element doped composite photocatalyst has good photocatalytic degradation performance on organic pollutant and a good application prospect.

The invention discloses a white-light LED (Light-emitting Diode) manufactured by utilizing quantum-dot fluorescent powder, aiming to solving the problems of lower color rendering property, narrower color range, poor stability and the like of the traditional LED technology. In the invention, the white-light LED (Light-emitting Diode) manufactured by utilizing the quantum-dot fluorescent powder comprises a heat-radiating base 1, gold wires 2, a quantum dot and silica gel mixture 3, a purple light or blue light chip 4, a light extraction lens 5, filler silica gel 6 and two electrodes 6, wherein the two electrodes 7 are fixed at two ends of the heat-radiating base 1, the purple light or blue light chip 4 is fixed on the heat-radiating base 1 and between the two electrodes 7, the two electrodes 7 are respectively connected with the purple light or blue light chip 4 through the gold wires 2, the quantum dot and silica gel mixture 3 covers on the purple light or blue light chip 4, the fillersilica gel 6 is used for covering the two electrodes 7, the gold wires 2, the quantum dot and silica gel mixture 3 and the purple light or blue light chip 4 on the heat-radiating base 4, and the light extraction lens 5 is arranged outside the filler silica gel 6.

The invention discloses a micro-ring resonant cavity electro-optical modulator based on a graphene / molybdenum disulfide heterojunction. The micro-ring resonant cavity electro-optical modulator comprises a substrate layer, a direct-light waveguide, a micro-ring resonant cavity waveguide and a graphene covering layer. The direct-light waveguide and the micro-ring resonant cavity waveguide are embedded into the substrate layer, and a coupling space is reserved between the direct-light waveguide and the micro-ring resonant cavity waveguide. The upper surface of the micro-ring resonant cavity waveguide is covered with a part of the graphene covering layer. The graphene covering layer comprises a first graphene layer, a second graphene layer, molybdenum disulfide, a first electrode and a second electrode, wherein the first graphene layer and the second graphene layer are isolated by the molybdenum disulfide, the first graphene layer stretches outwards from one side of the micro-ring resonant cavity waveguide and is connected with the first electrode, and the second graphene layer stretches outwards from the other side of the micro-ring resonant cavity waveguide and is connected with the second electrode. The micro-ring resonant cavity electro-optical modulator has extremely low optical loss, a low thermo-optical coefficient, low insertion loss, large environment temperature tolerance, a good modulation depth and a high extinction ratio.

The invention describes a usage of a heteroatom doped water-soluble carbon quantum dot serving as a photosensitizer in an antimicrobial material. Various types of heteroatom doped water-soluble carbon quantum dots contain one or more of such heteroatoms as N, S, Si, Se, P, As, Ge, Gd, B, Sb and Te, and the absorption spectrum wavelength of the heteroatom doped water-soluble carbon quantum dot is 300-850 nm. As shown in a research, the heteroatom doped water-soluble carbon quantum dots can efficiently generate active oxygen under the irradiation of visible light, so that the heteroatom doped water-soluble carbon quantum dot has a huge development potential in the application field of photodynamic (PDT) sterilization and disinfection.

The invention discloses a method for preparing titanium dioxide nanometer tube array by molybdenum-tungsten mixture anode oxidation. Wherein, an electrolyte is an organic electrolyte system of hydrofluoric acid with HF content by mass of 0.5 swung dash 3% and dimethyl sulfoxide; under a DC voltage of 25 swung dash 100 V, some pure titanium or titanium alloy is taken as an anode, a platinum sheet as a cathode, and the nanometer tube is prepared by electrolyzing in the electrolyte; then the prepared TiO2 nanometer tube array is immersed in clearing solution of WO3 or MoO3 taking O22- as chelant for 10 swung dash 90 min., then TiO2 nanometer tube array mixed with tungsten and molybdenum is prepared. The invention increases the length of TiO2 nanometer tube, enlarges the specific surface area of the light-pole material, and widens the absorption spectrum of the TiO2 nanometer tube array in visible light area.

The invention discloses a silicon-avalanche photodetector (Si-APD) with black silicon as a photosensitive layer and a preparation method of the Si-APD with the black silicon as the photosensitive layer, and belongs to the field of photoelectric detection technology. The Si-APD comprises a silicon intrinsic substrate 1, an N<+> region 2, a P type region 3, an annular N type region 4, an N<+> region black silicon layer 5, a P<+> region 6, an upper electrode 7 and a lower electrode 8, wherein the N<+> region 2 is located in the middle of the upper surface of the silicon intrinsic substrate 1, the P type region 3 is located below the N<+> region, the annular N type region 4 is located on the periphery of the upper surface of the silicon intrinsic substrate, the N<+> region black silicon layer 5 is located on the upper surface of the N<+> region, the P<+> region 6 is located on the lower surface of the silicon intrinsic substrate, the upper electrode 7 is located on the upper surfaces of the N<+> region black silicon layer and the annular N type region, and the lower electrode 8 is located on the lower surface of the P<+> region. According to the Si-PAD, the black silicon material serves as the photosensitive layer, and meanwhile the annular N type region is additionally arranged on the peripheries of the N<+> region and the P type region. Thus, the Si-APD with the black silicon as the photosensitive layer can absorb light waves of a near-infrared band and have higher light absorptivity and a wider response wave band, the preparation technique is simple, the cost is low, and the Si-PAD has the advantages of being easy to integrate, quick in response speed, high in responsivity and wide in response wave band.

The invention provides a solar cell which comprises a quantum well structure; the cell structure comprises from bottom to top a back electrode, a bottom cell consisting of a p-typed germanium substrate and an n-typed germanium epitaxial layer, an n-typed GaAs layer transition layer, a lower tunneling junction, a middle cell consisting of a p-typed GaAs layer, the quantum well structure and an n-typed GaAs layer, an upper tunneling junction, a top cell consisting of a p-typed GaInP layer and an n-typed GaInP layer, an anti-reflection film and an upper electrode, wherein, the quantum well structure is divided into a quantum well layer which is made by three to five clusters of semiconductor materials and a barrier layer; and the solar cell can extend the absorption spectra of the middle cell, improve the current matching among three sub-cells, and enhance the conversion efficiency of the cell.

The invention relates to a method for detecting oxidative damage DNA based on fluorescence resonance energy transfer of carbon quantum dot and gold nanoparticle. The method comprises the following steps: (1) bio-functionalization treatment for CQDs surface: adding glutaraldehyde into a surface aminated CQDs solution, standing by for 10-40min, adding oxidative damage DNA, storing at 4 DEG C and standing by; (2) AuNPs preparation and surface bio-functionalization treatment: utilizing a method for reducing high chloroauric acid by using sodium citrate to prepare AuNPs and connecting 8-OHdG antibody with the prepared AuNPs surface through an amino terminal on the antibody, wherein the mass ratio of AuNPs to 8-OHdG antibody is at (1:10)-(1:50); (3) determining the oxidative damage DNA: adding the 8-OHdG antibody modified AuNPs solution into the oxidative damage DNA modified CQDs solution, incubating for 0.5-2 hours and then determining fluorescence intensity. The method is quick, convenient and sensitive.

The invention discloses a quantum dot fluorescent material, which is prepared from the following raw materials of: by weight, 0.01-35 parts of a fluorescent material, 60-90 parts of a resin, and 2-35 parts of a filling material, wherein the fluorescent material comprises quantum dots or a compound of quantum dot and non-quantum dot fluorescent materials. Correspondingly, the invention discloses a preparation method of the above quantum dot fluorescent material. In addition, the invention also discloses a LED fill / flash lamp, which is prepared by steps of: coating the quantum dot fluorescent material on the surface of an unpacked LED chip, curing and packaging. According to the invention, the quantum dot fluorescent material and the LED fill / flash lamp prepared by the utilization of the quantum dot fluorescent material have characteristics of high color rendering index, low color temperature and strong luminous efficiency. By the adoption of the material and the lamp, color trueness of images acquired by image acquisition equipment can be substantially raised.

The invention discloses a conjugated polymer based on double boron and nitrogen bridged bipyridine and a preparation method and application thereof and belongs to the technical field of solar cells. The technical problem that the energy conversion efficiency of full-polymer solar cells in the prior art is low is solved. The conjugated polymer has the structure shown in the formula (I) (shown in the specification), the LUMO energy level ranges from -3.50 to -4.0 eV, the optical band gap is smaller than 2.0 eV, an absorbing spectrum ranges from 300 nm to 800 nm, electronic mobility is 10<-2>-10<-4> cm<2>V<-1>S<-1>, the LUMO / HOMO energy level, the optical band gap, the material mobility and the active layer blended shape of the conjugated polymer can be adjusted through different kinds of electron donating capacity of bridging units, different copolymerization bonding angles of electron pulling units and length changes of alkyl chains, and the conjugated polymer is suitable for high-performance solar cell acceptor materials.

An organic solar cell comprises a transparent substrate, a cathode, an electron transport layer, an optical activity layer, a hole transport layer and an anode, wherein the optical activity layer comprises a donor material, an acceptor material and two or more dyes with different absorption wavelengths. According to the organic solar cell, the absorption of the organic solar cell for near ultraviolet and near infrared regions in sunlight is increased through the addition of dye combination, the absorption spectrum of the organic solar cell for the sunlight is broadened, the fluorescent radiation loss is reduced, the utilization efficiency of the sunlight is reinforced, and the photoelectric conversion efficiency of the organic solar cell is further improved. Meanwhile, the crystallinity of the optical activity layer is also improved due to the addition of the dyes, and the stability of the organic solar cell is improved.

A double-knot organic solar cell comprises a bottom cell and a top cell, wherein the bottom cell comprises a transparent substrate, a negative pole, an electron transfer layer, an optical activity layer, a hole transfer layer and an intermediate electrode layer; the top cell comprises an intermediate electrode layer, an electron transfer layer, an optical activity layer, a hole transfer layer and a positive pole; and the optical activity layers of the bottom cell and the top cell contain donor materials, acceptor materials and dyes, dyes include at least one short-wave dye and at least one long-wave dye, the absorption peak of the short-wave dye is 250-550 nm, and the absorption peak of the long-wave dye is 650-950 nm. According to the double-knot organic solar cell, the dyes with different wave lengths are combined and used, so that the sunlight utilization ratio is increased, and the photoelectric conversion efficiency and the stability of the solar cell are improved.

The invention relates to a method for preparing a composite heterostructure of zinc oxide nano rods and a silver micron plate. The method includes: utilizing dextran sulphate sodium as regulating agent to prepare a perforated silver micron plate in a reaction system of silver nitrate and an ascorbic acid solution of water and methanamide; depositing zinc oxide seed crystals on the silver micron plate, coating the silver micron plate with the deposition of the zinc oxide seed crystals on an electric-conducting glass sheet in a rotating manner, cleaning, drying, placing the electric-conducting glass sheet in an ethanol solution of hexamethylene tetramine and zinc nitrate to grow a zinc oxide nano rod array on the silver micron plate, fully cleaning with water, and naturally drying to obtain the finished product. The product prepared by the method is a high-level composite heterostructure with the zinc oxide nano rod array growing on the perforated silver micron plate, wherein the diameter of the silver micron plate is about 4 microns, and the size and the structure of the zinc oxide nano rod array are adjustable and controller. The method for preparing the composite heterostructure of the zinc oxide nano rods and the silver micron plate is structurally controllable, good in repeatability and stable in product property, and has excellent photocatalytic performance.

The present invention discloses a fluorescent phycocyanin and a fluorescent phycaerythrin. The phycocyanin and the phycaerythrin have molecular structure connected to open-chained linear tetraphyrrolyl compound as carrier protein and chromophore via thioether bond, are extracted from algae and can emit strong fluorescence after being excitation of light with proper wavelength. The present invention also discloses serial uses of the phycocyanin and the phycaerythrin in fluorescent detection and immunological analysis, in preparing anticarcinogen medicine and food, in preparing medicine and food for resisting irradiation, strengthening immune, in preparing photon switch, and in preparing food and cosmetic additive.

The invention discloses a method for photothermal conversion based on vertical-structure graphene growing on a common soda-lime glass substrate. The technical method comprises the following steps that graphene glass is prepared, wherein the graphene layer height in the graphene glass is 1-100 nm. A preparation method of the graphene glass comprises the steps that the substrate is provided, the glass substrate is put in a plasma reaction cavity, a carbon source is subjected to splitting decomposition to produce plasma, the plasma precipitates on the glass substrate to obtain the graphene glass, and the temperature of the plasma reaction cavity in the precipitating process is 500-600 DEG C. Compared with other photothermal conversion devices, a graphene nano-sheet having a special structure and perpendicular to the glass substrate can be obtained without special structural design. Under the irritation of sunlight, the surface temperature of the glass substrate can be increased from 25 DEG C to about 58 DEG C, and very high photothermal conversion efficiency is displayed.

The invention discloses a 3D branch semiconductor nano heterojunction photoelectrode material and a preparing method thereof. The heterojunction photoelectrode material is compounded by CuO and ZnO, and is in a 3D branch structure. In the method, ZnO branch nanobars are synthesized on the CuO nanobars, a branch nano structure is realized, and a 3D branch semiconductor nano heterojunction photocathode is prepared, which effectively increases absorption for sunlight, thereby accelerating effective separation of an electron hole pair, further reducing composition thereof, promoting charge transmission, optimizing photoelectric conversion efficiency of a traditional single semiconductor electrode, and improving photolysis efficiency of water; in addition, the material has advantages of environment friendliness and low cost, and has good application prospect.

The invention discloses a modified carbon quantum dot loaded hollow tubular carbon nitride photocatalyst and a preparation method thereof. The photocatalyst takes hollow tubular carbon nitride as a carrier and is loaded with modified carbon quantum dots; urea and melamine with a mole ratio of 1-5:1 are used to prepare the hollow tubular carbon nitride through hydrothermal and calcination. The preparation method comprises the following steps of: mixing hollow tubular carbon nitride, water and modified carbon quantum dot solution, and drying to obtain the photocatalyst. The photocatalyst has the advantages of large specific surface area, large number of pores, multiple active sites, high speed of separation and migration of photo-generated carriers, strong light absorption capacity, high photocatalytic activity, high stability, high photocatalytic efficiency and the like; the preparation method of the photocatalyst has the advantages of convenience in synthesis, simplicity in operation,no secondary pollution to the environment and the like. The photocatalyst can be widely used for treating organic pollutants in the environment and killing harmful microorganisms in the environment,and has good application value and application prospect.

The invention relates to an Ag-embedding titanium oxide-bamboo charcoal composite powder and a preparation method thereof. The composite powder comprises Ag-embedding titanium oxide and porous bamboo charcoal, wherein the weight ratio of the Ag-embedding titanium oxide to the bamboo charcoal is 1-5:100 and is preferred to 3-5:100. The preparation method of the composite powder includes the steps that Ag-embedding titanium oxide is dispersed in deionized water, after a mixed solution is heated to boiling, bamboo charcoal is added, boiling is kept, reaction lasts for 1-3 h under the condition of strong stirring, then reaction products are calcined for a period of time in an oxygen insulating manner, and therefore the Ag-embedding titanium oxide-bamboo charcoal composite powder can be obtained. Compared with the prior art, the technology is simple, preparation cost is low, and the prepared composite powder has excellent bactericidal performance under visual light.

The invention discloses preparation and application of a titanium dioxide composite photocatalytic system. A preparation method comprises the steps of (1) nanometer gold preparation; (2) nanometer gold-carbon quantum dot preparation; (3) nanometer gold-carbon quantum dot-titanium dioxide composite system preparation. Visible light is used for performing photocatalytic performance test on the prepared composite material; the excellent photocatalytic performance of the material is proved by degrading organic pollutants of nonyl phenol. By starting from the angle of the composite material, the nanometer gold-carbon quantum dots are used as a titanium dioxide sensitizer; in visible light, after the photolytic activity sensitizer absorbs energy, free electrons are excited out; the electrons aretransferred onto a conduction band of titanium dioxide and then take a reduction reaction with organic matters; a good degradation effect is achieved. Nontoxic and harmless carbon quantum dots are used for modifying the titanium dioxide; a titanium dioxide visible light photocatalytic system is built; the absorption capacity and the catalytic activity of the system are improved; the degradation efficiency on pollutants is enhanced.

The invention discloses a Cu@Cu-Au nano-particle with a core-shell structure and a preparation method and application thereof. Particularly, the invention provides a Cu@Cu-Au nano-particle, wherein Au is mainly distributed at the outer layer while Cu is not only distributed in the core but also at the outer layer to some degree. The preparation method of the nano-particle comprises the following three steps: (1) forming an elementary Cu core; (2) establishing a Au-Cu core-shell; and (3) carrying out posttreatment. The Cu@Cu-Au nano-particle has relatively strong absorption in the range of 500nm to 900nm and also has relatively high stability. Compared with a device based on PEDOT:PSS, a device using polymer solar cell taking a mixture of PEDOT:PSS and the Cu@Cu-Au nano-particle as a hole transmission layer has the advantages that the efficiency can be improved by about 0.5% and the increase is about 15.6%.

The invention discloses an organic dye sensitizer, a preparation method and an application of the organic dye sensitizer in photoelectric conversion. The invention provides an organic dye sensitizer having the general formula as shown in formula I, wherein A is an electron-deficient unit, which is an electron acceptor; D is an electron-rich unit, which is an electron donor; N is an electron neutral organic structural unit, which has no significant ability to push and pull the electron; pion is a conjugate structural unit for bonding; Ar is conjugated aromatic ring system chromophoric units or a conjugated combination of two or more of structural units; B refers to a structural unit formed by bonding a nanometer porous surface of the dye-sensitized cell photoanode and transporting electrons excited by irradiating dye-sensitizing agent molecules with the visible and ultraviolet light to form current; and n is 1,2,3,4,5 or 6.

The present invention discloses a right side illuminated Si-PIN photoelectric detector taking the micro-nano structural silicone as a light-sensitive layer and a preparation method thereof. The right side illuminated Si-PIN photoelectric detector taking the micro-nano structural silicone as the light-sensitive layer comprises an I-type substrate, an N area located under the I-type substrate, a micro-nano structural layer P area located in the center of the upper part of the I-type substrate, P+ areas located at the two sides of the upper part of the I-type substrate, upper-end electrodes located on the upper surface of the I-type substrate and a lower-end electrode located on the lower surface of an N area. Compared with the conventional Si photoelectric detector, the right side illuminated Si-PIN photoelectric detector taking the micro-nano structural silicone as the light-sensitive layer of the present invention has a higher responsivity, also can detect the near infrared light, is simple in preparation technology, and is compatible with a conventional silicon semiconductor technology.

A lithographic projection apparatus is disclosed. The apparatus includes a radiation system that provides a beam of radiation, and a support structure that supports a patterning structure. The patterning structure is configured to pattern the beam of radiation according to a desired pattern. The apparatus also includes a substrate support that supports a substrate, a projection system that projects the patterned beam onto a target portion of the substrate, a plurality of optical elements that form part of at least one of the radiation system, the patterning structure, and the projection system; and a cleaning device. The cleaning device includes at least one cleaning beam of radiation, and a gas. The cleaning device is configured to clean an individual optical element or a subset of the plurality of optical elements.

The invention discloses an InP / ZnS quantum dot and a CIS / ZnS quantum dot for a white-light LED and a preparation method of the InP / ZnS quantum dot and the CIS / ZnS quantum dot. Mixed fluorescent powder of the green luminous InP / ZnS quantum dot and the orange-red luminous CIS / ZnS quantum dot is prepared as a fluorescent layer; and a blue chip is selected to be modulated into the white LED as an excitation light source. Each of the InP / ZnS quantum dot and CIS / ZnS quantum dot structurally comprises a cooling base (1), a light picking lens (2), an electrode (3), a gold line (4), silica (5), a silica gel layer (6) of the mixed fluorescent powder of the InP / ZnS quantum dot and the CIS / ZnS quantum dot, and the blue chip (7) with the peak wavelength of 440-480nm. The used fluorescent material is low in toxicity and low in cost; the synthesized white-light LED is simple in structure; the defects of poor color rendering property, relatively narrow color gamut, poor stability and the like in an existing LED technology are overcome; and the InP / ZnS quantum dot and the CIS / ZnS quantum dot have good development prospects.

The invention relates to a fluoro fused ring benzothiadiazole polymer acceptor material and a preparation method thereof. The fluoro fused ring benzothiadiazole polymer acceptor material comprises a fused ring benzothiadiazole central core unit, fluoro-substituted electron-withdrawing end groups and an aromatic ring connecting unit, wherein the fused ring benzothiadiazole central core is of a nitrogen bridge trapezoidal fused ring structure, the fluoro-substituted electron-withdrawing end groups are connected to the two ends of the central core, and each acceptor unit is in conjugate connection through a simple aromatic ring structure.

The invention discloses a perovskite hybrid solar cell based on a cadmium sulfide nanoarray. The perovskite hybrid solar cell comprises a substrate, a transparent metal electrode layer, an inorganic electron transport layer, a photosensitive layer, a hole transport layer and a metal electrode layer; the transparent metal electrode layer, the inorganic electron transport layer, the photosensitive layer, the hole transport layer and the metal electrode layer are orderly arranged on the substrate from bottom to top; the inorganic electron transport layer is formed from the cadmium sulfide nanoarray; the form of the cadmium sulfide nanoarray is nanorod, nanowire or nanotube. The perovskite hybrid solar cell is characterized in that the cadmium sulfide nanoarray is taken as the electron transport layer material instead of high-temperature sintered metal oxides widely used at present, and has relatively small band gap width and is relatively wide in an absorption spectrum to sunlight; the interface area of the electron transport layer material and the material of the photosensitive layer is increased and a continuous electron transport channel is provided; compared with high temperature sintering, the perovskite hybrid solar cell has the advantages of low cost, low energy consumption and easily realizable large-area preparation.

The invention discloses a wide-spectrum high-absorption solar cell, which is a semiconductor photovoltaic device and comprises an intrinsic absorption layer of specific thickness. The thickness of theintrinsic absorption layer is determined by the light trapping efficiency of a photonic crystal. The device is sequentially provided with a substrate layer, an insulating buried layer, a top absorption layer (like a Si layer) and an anti-reflection film layer from bottom to top; ions are injected into the two sides of a top absorption region of the device to form a p-type doped region and an n-type doped region respectively, a p electrode is formed on the p-type doped region, and an n electrode is formed on the n-type doped region; the intrinsic absorption layer is arranged between the p-typedoped region and the n-type doped region; periodic air holes are formed in the surface of the intrinsic absorption layer to form photonic crystals; the specific period and the etching depth of the periodic air holes are calculated according to requirements, an incident light wavelength range and a theory; the periodic air holes can be made into cylindrical holes or conical holes; another semiconductor material (like Ge) is filled in the periodic air holes. The solar cell has the advantages of wide absorption spectrum, high absorption efficiency, high integration level, multiple functions andthe like, and is suitable for ultraviolet, visible light and near-infrared bands.

The invention discloses a ternary all-polymer solar cell and belongs to the technical field of photovoltaics. A non-fullerene small molecule receptor with strong crystallinity is added to an optical active layer of a binary all-polymer solar cell as a third component. An inversion structure is adopted by the cell; and the optical active layer is prepared from the following components in percentages by weight: 41.6-50% of an electron donor, 41.6-50% of an electron receptor and 0-16.6% of the non-fullerene small molecule receptor with the strong crystallinity. A non-fullerene small molecule receptor material with strong crystallinity is added to the optical active layer, so that spectral absorption is widened, phase separation is improved and bimolecular charge recombination can be inhibited, thereby causing more effective charge generation and transportation, improving the short-circuit current density of a device and finally improving the photoelectric conversion property of the device. The ternary all-polymer solar cell disclosed by the invention has the advantages of being high in photoelectric conversion property, simple in preparation process, short in process and low in cost.