57 results about "Luminescence quantum yield" patented technology

The invention aims to provide a preparation method and application of a blue-light CsPbBr3 perovskite quantum dot, and belongs to the technical field of quantum dot preparation. According to the method, 1-ethyl-3-methylimidazolium hexafluorophosphate molecules are introduced to the surfaces of the quantum dots by using a heterogeneous ligand exchange strategy, and passivation of surface defects of the quantum dots and inhibition of Auger recombination are realized at the same time, so that the optical performance and stability of the quantum dots are improved, and the photoluminescence quantum yield is increased from 78% to 92%; according to a blue light emitting diode prepared based on the CsPbBr3 quantum dot, the maximum external quantum efficiency of 20.02% is achieved under the brightness of 6441 cd / m < 2 >, and the external quantum efficiency of nearly 19% is still achieved under the high brightness of nearly 10000 cd / m < 2 >; under the initial brightness of 106 cd / m < 2 >, the running half-life period of about 700 minutes is obtained; the preparation of the blue-light perovskite quantum dot light-emitting diode with high external quantum efficiency, high brightness, long service life and low efficiency roll-off is realized.

The invention relates to the technical field of luminescent materials, in particular to a circularly polarized phosphorescent Pt (II) complex as well as a preparation method and application thereof. The circularly polarized phosphorescent Pt (II) complex has a structure as shown in a formula (R)-I, a formula (S)-I, a formula (R)-II, a formula (S)-II, a formula (R)-III or a formula (S)-III, according to the invention, [2.2] paracyclophane is mainly used as a planar chiral skeleton, and different sites of the planar chiral skeleton are modified to obtain the circularly polarized phosphorescent Pt (II) complex which is stable in chirality and is not easy to racemize. The high-efficiency circularly polarized phosphorescent Pt (II) complex with both luminous quantum yield and circular polarization property is obtained by utilizing the advantages of a four-coordinate plane structure, high exciton utilization rate and adjustable color of the Pt (II) complex, and the high-efficiency circularly polarized phosphorescent Pt (II) complex has great research value on development of circularly polarized chiral materials. .

The application discloses a monolithic integrated self-powered luminescent solar concentrator-electrochromic integrated device and a preparation method thereof, and has a layered structure, which is, from bottom to top, a conductive glass substrate, an electrochromic layer, a transparent sealing tape, a fluorescent gel electrolyte layer, a transparent sealing tape, an electrochromic layer and a conductive glass substrate. The monolithic integrated self-powered luminescent solar concentrator-electrochromic integrated device can realize reversible conversion between bleached state and colored state within 100 seconds under natural sunlight, and realize dynamic adjustment of the transmittance of incident sunlight. The core functional layer of the device is a fluorescent gel electrolyte with high luminescent efficiency, and the photoluminescence quantum yield can reach 74.9%, so that the device has excellent light capturing and photon transmission performance, and can realize high-efficiency photoelectric conversion by coupling a solar cell at the edge of the device to provide power for the reversible driving of the electrochromic device. The application realizes self-powered electrochromism which can be applied to building glass curtain walls.

The invention relates to the field of intelligent response luminescent materials, in particular to a cesium-yttrium-chloride lead-free perovskite intelligent response luminescent material capable of being triggered to change color through ethanol and a preparation method of the cesium-yttrium-chloride lead-free perovskite intelligent response luminescent material. The chemical formula of the cesium yttrium chloride lead-free perovskite intelligent response luminescent material is Cs4YCl7: Sb, the preparation method comprises the following steps: dispersing Cs3YCl6: Sb in an organic solvent to obtain a precursor mixed solution; cesium salt is evenly mixed with glacial acetic acid and hydrochloric acid, and a CsCl solution is obtained; and adding the CsCl solution into the precursor mixed solution to react, and then centrifuging and drying to obtain the cesium yttrium chloride lead-free perovskite intelligent response luminescent material capable of being triggered to change color through ethanol. The caesium yttrium chloride lead-free perovskite intelligent response luminescent material has a high luminescent quantum yield; the method is a low-temperature solution method and is simple and convenient to operate; according to the invention, gram-level synthesis of the high-quality cesium-yttrium-chloride lead-free perovskite intelligent response luminescent material prepared by the solution method can be realized.

The present invention relates to a tetradentate platinum complex containing a spirocyclic structure and its application in an organic light-emitting diode. The platinum complex is a compound having a structure of chemical formula (I). Such a material has a high luminescence quantum yield and a short excited state lifetime. When applied in an organic light-emitting diode, it has good luminous efficiency and device stability. The present invention also provides an organic electrophotoelectric device, comprising a cathode, an anode and an organic layer, wherein the organic layer is one or more layers of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer and an electron injection layer, and at least one of the organic layers contains a compound in structural formula (I).

The invention discloses a near-infrared two-zone dye photoluminescence quantum yield standard substance as well as a preparation method and application thereof. The solid TPE-BBT is dissolved by using the low-polarity organic solvent and then diluted, so that the standard substance solution meeting the requirements can be prepared, the operation is simple, and the repeatability is good. The prepared standard substance solution shows ultrahigh PLQY in an NIR-II region, can be accurately measured by using a commercially available integrating sphere instrument, and can be used as a standard substance in a PLQY relative method test to accurately measure the PLQY of other NIR-II dyes. The standard substance solution provided by the invention can solve the problems that the PLQY of a commercially available standard substance is too low to directly and accurately measure and the PLQY value is unreliable when the standard substance is used as a standard substance of a relative method, has the advantages of high stability, simplicity in preparation and easiness in implementation, and has a great application prospect.

The present invention relates to the field of quantum dot materials, and in particular to a lens material based on quantum dots, and a preparation method and application thereof. The present application discloses a lens material based on quantum dots, and the raw materials for preparation include: a quantum dot precursor, an acrylic compound, an initiator, and a quantum dot stabilizer. The raw materials for preparing the quantum dot precursor include: a cadmium source solution, a sulfur source solution, an oxysilane substance, and a sulfonate substance. The cadmium source is selected from at least one of cadmium oxide, cadmium nitrate, and cadmium chloride; the sulfur source is selected from at least one of sulfur powder, sodium sulfide, cysteine, and thioacetamide. The polymer coating can effectively isolate oxygen, moisture, etc., avoid quantum dot fluorescence quenching and inactivation, and improve the stability of the quantum dot lens material. Moreover, the luminous efficiency is high, the photoluminescence quantum yield (PLQY) is greater than 60%, the brightness decay after photothermal aging is less than 15%, and the transmittance is greater than 90%.

The invention discloses a zero-dimensional inorganic metal halide luminescent material as well as a preparation method and application thereof, and belongs to the technical field of photoluminescent materials. The chemical formula of the material is K3SbCl6, the crystal structure of the material is composed of isolated [SbCl6] 3-octahedron and K < + > ions, and typical 0D structural characteristics are shown; k3SbCl6 can emit bright yellow fluorescence under the excitation of ultraviolet light, and shows excellent optical properties, including a remarkable broadband emission characteristic and an ultra-high photoluminescence quantum yield close to 100%. The material is synthesized by adopting a room-temperature solid-state interface diffusion method, a potassium-containing compound and an antimony-containing compound are in close contact under a room-temperature condition, and efficient synthesis of K3SbCl6 can be realized by utilizing an interface diffusion reaction between the potassium-containing compound and the antimony-containing compound; the method does not need harsh synthesis conditions such as high temperature and high pressure, significantly reduces the process complexity and energy consumption, and has good industrial application prospects.

The invention belongs to the technical field of hydrogen bond organic framework materials, and relates to a chiral luminescent ionic hydrogen bond organic framework material, the chemical formula is [(H2CBS) 4 (R / S-DPEN) 4. (EtOH) 2 (H2O) 18] n, n is a positive integer, H2CBS is 4, 4 '-bis (2-sulfostyryl) biphenyl, and R / S-DPEN is R / S-diphenylethylenediamine. The structural unit belongs to a triclinic system, the space group is P1, and the molecular formula is C177H222N8O50S8. The preparation method comprises the following steps: dissolving an H2CBS ligand and an R / S-DPEN ligand in a mixed solution of water and ethanol to obtain a reaction solution; and carrying out sealed heat preservation on the reaction liquid at 5-8 DEG C to obtain colorless transparent rod-like crystals, filtering and drying to obtain the chiral luminous ionic hydrogen bond organic framework material. The material has high light-emitting quantum yield and good structural stability and reversibility, and has important application value in the fields of organic light-emitting diodes (OLEDs), biological imaging, photoelectric devices and the like.

The invention relates to the technical field of metal halide luminescent materials, and discloses a preparation method of a cesium-lead-bromine-chlorine blue-light quantum dot colloid and a preparation method of a blue-light film. The method comprises the following steps: dissolving cesium bromide and lead bromide in N, N-dimethylformamide, adding oleic acid and oleylamine to form a precursor solution, and injecting the precursor solution into a toluene anti-solvent to prepare CsPbBr3 quantum dot colloid; and then dropwise adding a toluene saturated solution of alkaline earth metal chloride (calcium chloride, strontium chloride, barium chloride or magnesium chloride) for post-treatment to realize ion exchange of Cl <-> and Br <-> and synergistic defect passivation, so that the emission peak is continuously adjustable in the range of 450-500 nm, the half-peak width is less than 30 nm, and the photoluminescence quantum yield is greater than 60%. And further mixing the quantum dot colloid with a polymethyl methacrylate toluene solution and forming a film to obtain a stable blue light quantum dot film which can be used for a backlight source or a display device.

The invention is applicable to the technical field of chemical materials, and provides a method for regulating and controlling luminescence of Au nanoclusters by solvent-induced ligand isomerization, which comprises the following steps: firstly, synthesizing the gold nanoclusters with different surface isomer proportions by regulating the pH value of a reaction system; au (I)-thioketone and Au (I)-mercaptan isomer are induced to be reversibly converted by utilizing the interaction of solvent molecules and a cluster surface ligand structure, and proton coupling electron transfer kinetics is cooperatively regulated, so that the precise regulation of the luminescence property of the gold nanocluster is realized. According to the present invention, the wide band and the continuous reversible adjustment of the light-emitting wavelength in the range of 495-800 nm can be achieved under the mild condition, the light-emitting quantum yield can be significantly improved, and the method has advantages of simple operation, clear mechanism, greenness and universality, and has application prospects in the fields of biological imaging, optical sensing, light-emitting devices and the like.

The present invention relates to a tetradentate platinum complex luminescent material based on a tetraarylethylene backbone structure and its applications. The platinum complex is a compound having the structure of formula (I). Such materials have the property of aggregation-induced emission, with a relatively high luminescence quantum yield and a short excited state lifetime. The present invention also provides an organic electro-optical device, comprising a cathode, an anode and an organic layer, where the organic layer is one or more of a hole injection layer, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer, and at least one layer of the organic layer contains the compound in formula (I).

The invention belongs to the technical field of nano material preparation and printing, and particularly relates to indium phosphide quantum dot ink as well as a preparation method and application thereof. According to the preparation method disclosed by the invention, the indium phosphide quantum dot core is firstly synthesized, and then the acrylic acid / polyacrylic acid / acrylate derivative ligand is used for carrying out surface treatment on the indium phosphide quantum dot, so that the surface passivation and stability improvement of the indium phosphide quantum dot and the optimization of the rheological property of the ink are synchronously realized, and the quantum efficiency is improved; the photoluminescence quantum yield is increased by 80% to 100% compared with that of similar InP / ZnSe quantum dots which are not treated by acrylic acid and the like. Indium phosphide / zinc selenide quantum dots treated by acrylic acid and the like are dispersed in an organic solvent to adjust the adaptive concentration to obtain the quantum dot ink, the ink does not need to be added with an additional rheology modifier or a film-forming polymer, the coffee ring effect can be effectively inhibited during drying, and preparation of high-resolution micro-patterns is achieved. The material can be directly used as a color conversion layer to be integrated with a blue micron light-emitting diode chip to form a display device.

Provided is a nanoparticle dispersion liquid which has a long life and excellent light durability while maintaining a high photoluminescence quantum yield (PLQY) by adding a light stabilizer that has excellent radical scavenging ability to a metal halide perovskite that forms luminescent nanoparticles.　This nanoparticle dispersion liquid is characterized by containing a metal halide perovskite, a light stabilizer, and a nonpolar organic solvent, and the light stabilizer includes at least one of a hindered amine skeleton represented by general formula (1) and a phenol skeleton represented by general formula (2). (In general formula (1), R1 is at least one selected from the group consisting of a hydrogen atom, an acyclic aliphatic hydrocarbon group, and an oxyl free radical group, R2 to R5 are each independently hydrogen or an acyclic aliphatic hydrocarbon group, and R6 is a hydrogen atom or an organic functional group.) (In general formula (2), R7 to R11 are each independently hydrogen or an organic functional group.)

Provided is a Sn / Ge halide nanocrystal represented by general formula (1): Cs3(Snα1Ge(1-α1))(Brβ1I(1-β1))5, wherein α1 is 0.00-0.40 and β1 is 0.00-1.00. According to the present invention, it is possible to provide a novel lead-free halide nanocrystal and lead-free halide nanocrystal composite having a high photoluminescence quantum yield and exhibiting a peak of emission from red to near infrared wavelengths.

The application belongs to the cross field of coordination chemistry and nanomaterials, and discloses a super-stable strong luminescent N-heterocyclic carbene-protected chiral heterometallic cluster and a preparation method thereof. 58.5 H 59 AuBr4ClCu4F6N8OP (abbreviated as: R / S -NHC py -AuCu4 ‑ Br) belongs to an orthorhombic system, and the space group is a chiral space group P 212121. Another chemical formula of the nanocluster is C 58 H 58 AuCu4F6I4N8P (abbreviated as: R / S -NHC py -AuCu4 ‑ I) belongs to an orthorhombic system, and the space group is a chiral space group I 41. The cluster has a structure that can be stable to 150 DEG C in air. R / S -NHC py -AuCu4 ‑ Br has strong orange luminescence at room temperature in air, and the luminescence quantum yield is 58%. The chiral structure and strong luminescence make it have strong chiral luminescence characteristics, and it can have good application prospects in the fields of holographic projection, information storage and cell imaging.

A light-emitting element with high luminous efficiency is provided. The light-emitting element contains a first organic compound and a second organic compound. The first and second organic compounds form an exciplex. The first organic compound emits no fluorescence but phosphorescence at a temperature ranging from low temperature to normal temperature. The luminescence quantum yield of the first organic compound is higher than or equal to 0% and lower than or equal to 40% at room temperature. Light emitted from the light-emitting element includes light emitted from an exciplex formed by the first organic compound and the second organic compound.

The invention provides a multicolor light-emitting hydrogen bond-organic framework material, which is formed by connecting an organic ligand and an organic solvent molecule through a hydrogen bond, the chemical formula of the multicolor light-emitting hydrogen bond-organic framework material is [(L) x (G) y (R) z], L is tetra [4-(3, 5-dicarboxyphenyl)] tetraphenylethylene, G represents a good solvent, and R represents a poor solvent; x is 0.5-1, y is 1-4, and z is 1-2. The novel hydrogen bond-organic framework material is constructed by introducing solvent molecules, and abundant hydrogen bonds are provided by introducing the solvent, so that the rigidity of the framework is improved, the conformation of organic molecules is changed, the non-radiative energy loss of the organic molecules is inhibited, and the light-emitting quantum yield of the hydrogen bond-organic framework material is greatly improved; and the highest light-emitting quantum yield can reach 100%. The multicolor light-emitting hydrogen bond-organic framework material can achieve tuning of light-emitting colors through pressure treatment engineering, the method is simple and environmentally friendly, and the repeatability of light-emitting tuning is good.

This invention relates to a class of dihydroxanthine chemiluminescent groups, their preparation methods, and applications. The dihydroxanthine chemiluminescent group developed in this invention, compared to the traditional phenolic dioxane chemiluminescent group which uses two rigid six-membered rings to fix the double bond conformation, exhibits a higher luminescence quantum yield and a longer emission wavelength. More importantly, it possesses a reactive aldehyde group, which, while maintaining high rigidity, extends the π-electron conjugated system, causing its emission wavelength to redshift to the near-infrared region. This allows it to be extended to chemiluminescence detection and in vivo imaging in small animal models.

The present invention provides a pyrene derivative modified by carbazole, a preparation method and an application thereof, and relates to the technical field of fluorescent dyes. The molecule of the pyrene derivative modified by carbazole with a structure shown in Formula I provided by the present invention contains a deep blue light chromophore pyrene group, which has a rigid plane and can reduce the non-radiative transition caused by the vibration of the molecular skeleton while ensuring that the material emits blue light, thereby improving the luminescence quantum yield of an organic electroluminescent device with the pyrene derivative modified by carbazole as the luminescence center. Moreover, the modified substituent (R) is a carbazole, dicarbazole and tricarbazole group with excellent carrier transport performance, which can improve the carrier transport performance of the dye molecule, thereby improving the luminescence performance of the electroluminescent device.

The application provides a white light phosphor powder based on copper-iodine organic hybrid clusters and a preparation method thereof, and has a structure shown in formula I. The structure of the white light phosphor powder in the application is that Cu4I4 is used as an inorganic core, and copper atoms are coordinated with nitrogen and phosphorus atoms on ligands to form a stable and unique cluster structure. The light emitting mechanism of the cluster is charge transfer from the inorganic core to the ligand, and the simple core and the ligand cooperate with each other to form degenerate emission energy levels, so that white light emission with double wide peaks from 400 to 800 nm is realized. The light emitting quantum yield reaches 97.8%. The material also exhibits excellent stability, and the thermal decomposition temperature is as high as 265 DEG C. The material also has low thermal quenching, and still maintains more than 80% of the original light emitting quantum yield under the condition of 240 DEG C. The application also provides an application of the white light phosphor powder based on copper-iodine organic hybrid clusters. The white light phosphor powder is applied to the field of solid state lighting, and has significant advantages and application prospects.

This invention discloses a luminescent macrocyclic TADF compound, relating to the field of organic light-emitting materials technology. By using an aniline derivative as the donor group and selecting a specific acceptor structure, the luminescence color and properties of the compound can be altered by changing the electron acceptor (A) and electron donor (D), providing a new approach for constructing diverse luminescent macrocyclic TADF molecules. Furthermore, experiments have demonstrated that this macrocyclic compound exhibits a high photoluminescence quantum yield, resulting in a significant improvement in luminescence intensity, making it applicable to the field of organic optoelectronic materials.

This invention discloses a multilayer nonlinear scalable optical neural network computing system based on 2D / 3D composite perovskite thin films, including a light source module, an optical convolution module, a nonlinear activation module, a photodetector module, and an electrical computing module. The nonlinear activation module utilizes 2D / 3D perovskite thin films formed from PEABr, CsBr, and PbBr₂, further cascaded to achieve high photoluminescence quantum yield and excellent film quality. It can efficiently convert the optical signal passing through the optical convolution module and achieve nonlinear activation. This invention employs an end-to-end joint optimization strategy to train optical masks combined with corresponding electrical back-ends to perform general visual processing tasks, including but not limited to image denoising and image classification. It can achieve high-precision image denoising and classification in a passive, lens-free manner, improving the computational depth and feature extraction capabilities of the photonic neural network.

An object of the present invention is to provide a core / shell type quantum dot material capable of increasing the photoluminescence quantum yield and a method of manufacturing the same. The quantum dot material according to one embodiment of the present invention is a quantum dot material comprising a plurality of nanoscopic core-shell structures, each nanoscopic core-shell structure including a nanocrystalline core including phosphorus and indium, a shell disposed on the nanocrystalline core, and a modifier comprising at least one of chlorine and bromine, wherein the content of chlorine and / or bromine is within a range of 2 to 15 mass % of the quantum dot material.

The invention relates to the technical field of photoelectric functional materials, in particular to Nd < 3 + > single-doped sandwich core-shell structure nanoparticles and a preparation method thereof.According to the Nd < 3 + > single-doped sandwich core-shell structure nanoparticles, a rare earth light-emitting ion doped layer is arranged between an inert core and a peripheral inert protection layer, doped ions are limited in a quasi-two-dimensional space, and the rare earth light-emitting ion doped layer is formed; therefore, excited state energy loss is effectively inhibited, and luminous efficiency is improved. The core-shell structure size and the doped ion concentration are synergistically optimized, and the thickness of a luminous ion doped layer is controlled to be 0.1-1 nm, so that the luminous intensity of the sandwich core-shell structure nanoparticles is enhanced by 33 times compared with that of common core-shell nanoparticles, the luminous quantum yield is increased to 28.6%, and the luminous life is prolonged to 295.9 ms; the preparation method disclosed by the invention is simple, the performance of the product is obviously improved, and the preparation method has important value on research and application of rare earth-based nano material photophysics, rare earth-based nano-photon solid-state devices and biological imaging probes.

The application discloses a kind of solid-state luminescent Schiff base two-dimensional covalent organic framework material and its preparation method and application, belong to material field.The preparation method of the solid-state luminescent Schiff base two-dimensional covalent organic framework material of the present application includes the following steps: the amine with C2 symmetry, DAD, solvent and acetic acid aqueous solution are mixed, and solvent thermal reaction is carried out, to obtain the solid-state luminescent Schiff base two-dimensional covalent organic framework material;The solvent is o-dichlorobenzene and n-butanol.The COFs material prepared in the application has high crystallinity and porosity, and the solid-state absolute luminescence quantum yield is as high as 39%.

The invention belongs to the technical field of nano materials, and particularly discloses a silver cluster material, a preparation method and application of the silver cluster material in aggregation-induced emission and crystallization-induced emission. The specific chemical formula of the silver cluster compound material is C62H52AgCl4P4SbF6, the silver cluster compound material is abbreviated as Ag (BDPB) 2SbF6. 2CH2Cl2, and the silver cluster compound material belongs to a monoclinic system; the space group is P21 / c, alpha is 90 degrees, beta is 90.782 (2) degrees, gamma is 90 degrees, and the molecular weight is 1406.33 Da. The silver cluster compound is prepared through a one-pot method, the preparation method is easy and convenient to operate, raw materials are easy to obtain, and the obtained silver cluster compound material has the characteristics of aggregation-induced emission and crystallization-induced emission and is high in light-emitting quantum yield and wide in application prospect.

[Problem] To provide an organic electroluminescent element including, in a light-emitting layer, an azafenylene derivative that exhibits a short delayed-fluorescence lifetime, a high emission-quantum yield, and high stability. [Solution] The aforementioned problem is solved by an organic electroluminescent element including, in a light-emitting layer, an azafenylene derivative represented by formula (I). The azafenylene derivative represented by formula (I) contains 1-3 carbazole-based substituents, and the basic skeleton of the azafenylene derivative is preferably heptadine. The energy difference ΔEST obtained by subtracting the energy level ET1 of the lowest triplet excited state from the energy level ES1 in the lowest singlet excited state is −0.20 eV ≤ ΔEST < 0 eV.

The application aims to provide a preparation method and application of blue light CsPbBr3 perovskite quantum dots, and belongs to the technical field of quantum dot preparation. The method uses a heterogeneous ligand exchange strategy to introduce 1-ethyl-3-methyl imidazole hexafluorophosphate molecules on the surface of quantum dots, and simultaneously realizes passivation of defects on the surface of quantum dots and inhibition of Auger recombination, thereby improving the optical performance and stability of the quantum dots, and the photoluminescence quantum yield is increased from 78% to 92%; a blue light emitting diode prepared based on the CsPbBr3 quantum dots realizes a maximum external quantum efficiency of 20.02% under a luminance of 6441 cd / m 2 , and still has an external quantum efficiency of nearly 19% under a high luminance of nearly 10000 cd / m 2 ; under an initial luminance of 106 cd / m 2 , a running half-life of nearly 700 minutes is obtained; and the preparation of a blue light perovskite quantum dot light emitting diode with high external quantum efficiency, high luminance, long running life and low efficiency roll-off is realized.

The invention discloses a silicon nanodot, a high-performance super-long continuous light-emitting silicon nanodot composite material, a preparation method of the composite material and an application of the composite material in information encryption, and develops an economical, simple, convenient and innovative strategy, the silicon nanodot is integrated into a composite matrix, and the composite material is prepared. And the high photoluminescence quantum yield of the SiNDs is effectively combined with the stability of a substrate to triplet excitons. The phosphorescence quantum yield (PhQY) of the obtained material is up to 81.04%, the afterglow life is as long as 3.44 seconds, meanwhile, macroscopic cyan emission is accompanied, the duration time is up to 52 seconds, and the material is one of reported long-afterglow luminescent systems with the best performance. The high-performance multicolor long afterglow material is obtained with lower manufacturing cost and a simpler technological process, the problems that an existing afterglow material is low in phosphorescence quantum yield, single in function, potential in pollution and the like are effectively solved, and a new solution is provided for the field of information encryption and the like.