81results about How to "Improve humidity stability" patented technology

The invention discloses a Spiro-OMeTAD/PbS composite hole transport layer based perovskite solar cell and a preparation method therefor. The perovskite solar cell comprises a transparent conductive substrate, an oxide electron transport layer, a perovskite solar light absorption layer, the Spiro-OMeTAD/PbS composite hole transport layer and a metal electrode. The perovskite thin film solar cell adopts a simple process; a lead sulfide thin film can be prepared by a large-area evaporation method; and the lead sulfide thin film can be inserted between the Spiro-OMeTAD and the metal electrode layer to be used as a buffer layer. The Spiro-OMeTAD/PbS composite hole transport layer based perovskite solar cell achieves a high photoelectric conversion efficiency which is as high as 15.11%; the lead sulfide, which is used as the buffer layer between the hole transport layer and the metal electrode, has higher hole mobility, and higher humidity stability and light and heat stability, so that the recombination of electron-hole pairs can be reduced; meanwhile, the stability of the cell can be improved; compared with other buffer layer materials, the lead sulfide can protect a device and improve the performance of the device as well; and therefore, a positive promotion effect is realized on the industrial development of the solar cell.

The invention discloses a new crystal form omega-crystal form of ivabradine hydrochloride and preparation method thereof. The mixture of the ivabradine hydrochloride and water is heated and dissolved completely and then is frozen and dried to obtain delta-crystal form crystal. The crystal form has stable temperature and humidity, does not contain any organic solvent and moisture and is applicable to preparation technical process and a long period of storage. The medicine composite taking the crystal form composite as active ingredient can be used to treat or prevent angina, myocardial infarction and relative arhythmicity.

The invention discloses 2-(3-cyano-4-isobutoxy phenyl)-4-methyl-5-thiazolyl formic acid of a new delta-crystal form and a preparation method thereof. The method comprises the steps of: heating a mixture of Febuxostat and absolute ethanol till completely dissolving, and then filtering to obtain an alcoholate; putting the alcoholate in a 80 DEG C baking oven for baking for 2 hours under 2mmHg vacuum decompression to obtain crystals of the delta-crystal form, which has excellent temperature and humidity stability, no any organic solvents or water and is suitable for preparation process and long-term storage. A medicine composite which takes the compound of the crystal form can be used for reducing uric acid in blood and treating all clinical hyperlithic situations, such as uarthritis.

The invention discloses a method for preparing zirconium metal organic framework (Zr-MOF) nanotubes. The method comprises the steps as follows: dissolving zirconium metal salt in a solvent DMF, adding1,3,6,8-tetra(4-carboxylbenzene)pyrene and a regulator, then, performing dispersion, carrying out solvothermal reaction on a mixture obtained by dispersion treatment, after the reaction is completed,cooling a product to room temperature, and performing drying after washing to obtain the Zr-MOF nanotubes. The method adopts a simple process, requires no template and can obtain the Zr-MOF nanotubesby a one-step solvothermal method. The nanotubes obtained by the method have good chemical stability, thermal stability, humidity stability and excellent photoluminescence performance, and as the nanotubes are composed of nanoparticles, the nanotubes facilitate diffusion transfer of substances inside and can be applied to rapid fluorescent response detection of guest molecules, catalysis of hydrolysis of organic phosphorus compounds and various Lewis acid catalytic reactions.

The invention relates to a method for preparing a konjac glucomannan composite humidity conditioning agent. The method comprises the following steps of: (a) weighing sodium hydroxide, adding the weighed sodium hydroxide to deionized water for dissolving, adding acrylic monomers into sodium hydroxide liquid, and uniformly stirring at the temperature of 65-70 DEG C; (b) weighing potassium sulfate, activated halloysite with the particle size of 200 meshes, konjac glucomannan, nano silver-loaded antimicrobial powder, N,N'-methylene-bis-acrylamide and urea, sequentially adding the weighed potassium sulfate, activated halloysite, konjac glucomannan, nano silver-loaded antimicrobial powder, N,N'-methylene-bis-acrylamide and urea into a reactor containing the liquid obtained in the step (a), and carrying out reaction for 20-30 min at the temperature of 65-70 DEG C, thereby obtaining a viscous solid product; and (c) after the polymer obtained in the step (b) is cooled to room temperature, drying for 4-5 hours at the temperature of 145-150 DEG C, carrying out decomposition and foaming through the urea so as to obtain a porous humidity conditioning material, and crushing the porous humidity conditioning material for 2-3 min by using a crusher, thereby obtaining humidity conditioning material powder with the particle size of 100-200 meshes. According to the method for preparing the konjac glucomannan composite humidity conditioning agent, the konjac glucomannan composite humidity conditioning agent has the advantages of large moisture content/capacity, good relative humidity stability, simplicity and convenience in preparation, low cost, good effect, environmental friendliness and no pollution.

The invention discloses a drying control method of biomass materials, which comprises the following steps: (1) conveying the biomass to be dried to a drying device by using a conveying device; (2) measuring the humidity of the biomass to be dried and/or the humidity of the biomass at the entrance of the drying device; (3) heating the biomass in the drying device by using the drying device, wherein a control unit sets the feeding speed and/or heating speed initially according to the humidity measured in the step (2); and (4) measuring the humidity of the biomass at the exit of the drying device, wherein the control unit dynamically regulates the feeding speed and/or heating speed according to the measured humidity, wherein the heating process also comprises a step of regulating the heated position of the biomass. In the method, the feeding speed and/or heating speed are dynamically regulated according to the humidity of the biomass; and thus, the dryness of the dried material in the dryer can be controlled accurately, the humidity stability of the dried material is increased, under-drying and over-drying phenomena are eliminated and the drying efficiency is improved.

The invention relates to a triazole ionic liquid-doped perovskite solar cell and a preparation method thereof. According to the preparation method, [EATZ]I is added into a perovskite precursor MAI solution, and a light-absorbing layer film is prepred through a spin-coating method, which is called an MA/EATZ method (E represents ethyl) for short. Because -NH2 in ionic liquid contains lone pair electrons, the unsaturated Pb<2+> defects in perovskite films can be effectively passivated under the action of a Pb-N coordination bond, and charge recombination is inhibited; in addition, due to the formation of the Pb-N coordination bond, the probability is provided for the self-assembly behavior of hydrophilic ILs on the surface of the perovskite, so that alkyl chains in the ILs are almost vertically distributed along the surface of the perovskite, and the improvement of the humidity stability of the perovskite solar cell is successfully realized. Meanwhile, due to the excellent hydrophilic performance of the ILs, the hydrophilicity of the perovskite precursor solution on the surface of a titanium dioxide electron transport layer is improved, and crystal nucleus formation and crystal growth are facilitated. And the crystallization rate of the perovskite in the thermal annealing process is reduced, so that the growth of large-size crystal grains is caused.

The invention relates to an inverted gradient bulk heterojunction perovskite solar cell on the basis of a gallium oxide protective layer and a method for preparing the inverted gradient bulk heterojunction perovskite solar cell. The inverted gradient bulk heterojunction perovskite solar cell which is a perovskite cell comprises a transparent conductive substrate, a hole transport layer, a perovskite light absorption layer, an electron transport layer and metal electrodes. The inverted gradient bulk heterojunction perovskite solar cell and the method have the advantages that a high-quality gallium oxide thin film is prepared by the aid of low-temperature deposition atomic layer bottom sinking processes with simple technologies and is used as a cushion layer between the electron transport layer and the metal electrodes, and accordingly the photovoltaic performance of devices can be effectively improved; the gallium oxide thin film with inorganic and hydrophobic characteristics can be used as the protective layer, accordingly, cell erosion due to external environments can be effectively isolated, and the stability of the devices can be enhanced; non-fullerene materials IDIC are dissolved in a green and environment-friendly solvent ethyl acetate to prepare gradient heterojunction perovskite thin films, accordingly, defects of perovskite can be effectively passivated, the performance of the devices can be enhanced, and thin film preparation toxic environments can be relieved.

The invention discloses a non-lead perovskite photoelectric functional material, a solar cell and a preparation method and application of the non-lead perovskite photoelectric functional material. Thechemical formula of the non-lead perovskite photoelectric functional material is ABX4, wherein A is a hydrophobic phenyl cation, B is a trivalent metal ion, and X is a halide ion. The prepared non-lead perovskite photoelectric functional material has a quasi-three-dimensional crystal structure and has humidity stability which lasts for one year or above; according to the non-lead perovskite photoelectric functional material C6H5NH3BiI4, the toxic lead element is replaced with the nontoxic bismuth element, CH3NH3 is replaced with C6H5NH3 with hydrophobicity, and the non-lead perovskite photoelectric functional material has the characteristics of nontoxicity, environment protection and high stability. In addition, the C6H5NH3BiI4 has good solubility in ethyl alcohol, and environment-friendly and low-toxicity ethyl alcohol is used as a solvent, so that natural environment protection is facilitated.

The invention discloses a perovskite wideband flexible light detector and a preparation method thereof. The flexible light detector consists of a flexible substrate and the following elements arranged sequentially on the flexible substrate: a perovskite film, an upconversion particle layer with a thickness of 10-50 nanometers, and a metal electrode disposed directly on the upconversion particle layer. The preparation method comprises the following steps: Step 1: preparing a perovskite crystal by any one of following methods on the flexible substrate: vacuum depositing, solution spin coating, printing and spraying to form a perovskite film; Step 2: performing spin coating or printing directly on the perovskite film to prepare upconversion particles with a thickness of 10-50 nanometers to obtain an upconversion particle layer and obtaining a perovskite/upconversion particle composite composed of the perovskite film and the upconversion particle layer; and Step 3, performing the vacuum evaporation directly on the perovskite/upconversion particle composite for a metal electrode, and preparing out a perovskite wideband flexible light detector able to respond the visible-near infrared band.

A red-emitting phosphor comprises a nitride-based composition represented by the chemical formula M_(x/v)M′₂Si_5-xAl_xN₈:RE, wherein: M is at least one monovalent, divalent or trivalent metal with valence v; M′ is at least one of Mg, Ca, Sr, Ba, and Zn; and RE is at least one of Eu, Ce, Tb, Pr, and Mn; wherein x satisfies 0.1≦x<0.4, and wherein the phosphor has the general crystalline structure M′₂Si₅N₈:RE, Al substitutes for Si within the crystalline structure, and M is located substantially at interstitial sites. Furthermore, the phosphor is configured such that 1,000 hours of aging at 85° C. and 85% humidity results in a deviation in chromaticity coordinates CIE Δx and Δy of less than about 0.03. Furthermore, the phosphor absorbs radiation in the UV and blue and emits light with a photoluminescence peak wavelength within the range from about 620 to 650 nm.

The invention discloses a perovskite solar cell doped with a multifunctional additive and a preparation method of the perovskite solar cell. The perovskite material is a bipolar semiconductor materialwhich has the characteristics of low cost, easiness in film formation, narrow band gap, high absorption coefficient, high carrier mobility and the like; the perovskite absorption layer of the cell comprises 2, 2-difluoromalonamide. The 2, 2-difluoromalonamide contains multiple organic functional groups (-NH2,-C = O,-F) and can interact with components in the perovskite material respectively, so that the quality of the perovskite thin film is effectively improved, defects of the perovskite thin film are passivated, recombination is reduced, decomposition of the thin film is inhibited, and finally the efficiency and stability of the perovskite solar cell are improved.

The invention provides a cyclopropanecarboxamide derivative F crystal form (please see the specification for the formula) in the formula (I). According to the XRPD illustration of the crystal form, diffraction peaks exist when 2Q is equal to 8.717, 9.758, 10.299, 10.8, 12.879, 15.401, 16.64, 16.92, 17.859, 18.759, 19.499, 20.678, 22.841, 23.178, 23.88, 24.479, 25.958, 27.06, 28.039, 29.521 and 31.121, and the error range of the 2Q value is +/-0.2. The cyclopropanecarboxamide derivative F crystal form has good high-temperature stability, high-humidity stability and illumination stability. Moreover, low moisture absorption performance is achieved. The cyclopropanecarboxamide derivative F crystal form can be applied to drugs for treatment or prevention of JAK-participated inflammation and autoimmunity diseases, proliferative diseases, graft rejective reactions and congenital cartilage deformation or diseases caused by IL6 oversecretion, and good bioavailability is achieved. Meanwhile, qualitative and quantitative information is provided, which is of important significance to further studying the curative effect of the solid drugs.

A volatile organic waste gas adsorbent having humidity stability and consisting of an MOFs/CNTs composite material is disclosed. The mass percentage of CNTs in the adsorbent is 0.5-10%. The adsorbentadopts the MOFs/CNTs composite material, VOC adsorption performance of the adsorbent is less affected by humidity, and the adsorbent has advantages of high VOC adsorption capability and high humiditystability.

The purpose of the present invention is to provide: a retardation film which uses a low-substituted cellulose ester and has improved retardation after saponification and improved wet heat stability of internal haze; a polarizing plate which uses the retardation film; and a liquid crystal display device. An optical film of the present invention contains a cellulose ester and a compound represented by general formula (1), and is characterized in that the compound has an average degree of substitution within the range of 3.0-6.0 and contains a component having a degree of substitution of 4 or less in an amount of 30-80% by mass (inclusive). (In the formula, R₁-R₈ each represents a substituted or unsubstituted alkylcarbonyl group or a substituted or unsubstituted allylcarbonyl group, and R₁-R₈ may be the same as or different from one another.)

The invention provides a cyclopropanecarboxamide derivative G crystal form (please see the specification for the formula) in the formula (I). According to the XRPD illustration of the crystal form, diffraction peaks exist when 2Q is equal to 8.376, 9.76, 10.5, 12.402, 13.362, 14.081, 14.958, 17.16, 17.758, 19.358, 21.579, 22.34, 22.981, 23.241, 24.459, 24.919, 25.443, 26.7, 27.419, 27.818, 28.378, 29.461, 31.001, 33.56, 34.5 and 35.58, and the error range of the 2Q value is +/-0.2. The cyclopropanecarboxamide derivative G crystal form has good high-temperature stability, high-humidity stability and illumination stability. Moreover, excellent solubility is achieved. The cyclopropanecarboxamide derivative G crystal form can be applied to drugs for treatment or prevention of JAK-participated inflammation and autoimmunity diseases, proliferative diseases, graft rejective reactions and congenital cartilage deformation or diseases caused by IL6 oversecretion, and good bioavailability is further achieved. Meanwhile, qualitative and quantitative information is provided, which is of important significance to further studying the curative effect of the solid drugs.

The invention provides a cyclopropanecarboxamide derivative H crystal form (please see the specification for the formula) in the formula (I). According to the XRPD illustration of the crystal form, diffraction peaks exist when 2Q is equal to 9.341, 13.019, 14.2, 16.66, 17.201, 18.37, 18.901, 20.522, 20.82, 21.141, 21.759, 23.001, 23.441, 24.461, 25.059, 26, 26.539, 28.8, 29.661 and 33.657, and the error range of the 2Q value is +/-0.2. The cyclopropanecarboxamide derivative H crystal form has good high-temperature stability, high-humidity stability and illumination stability. Moreover, low moisture absorption performance is achieved. The cyclopropanecarboxamide derivative H crystal form can be applied to drugs for treatment or prevention of JAK-participated inflammation and autoimmunity diseases, proliferative diseases, graft rejective reactions and congenital cartilage deformation or diseases caused by IL6 oversecretion, and good bioavailability is further achieved. Meanwhile, qualitative and quantitative information is provided, which is of important significance to further studying the curative effect of the solid drugs.

A radio wave absorption material is characterized to be obtained by firing a ferrite material that is formed by adding an accessory component, 0.1 to 2 wt % of CoO, to an oxide magnetic material containing main components, 30 to 49.5 mol % of Fe₂O₃, 0.5 to 20 mol % of Mn₂O₃, 5 to 35 mol % of ZnO, 0.2 to 15 mol % of (Li_0.5Fe_0.5)O and MnO as the rest. In the above-mentioned composition, part of ZnO may be replaced with 20 mol % or less of CuO. This radio wave absorption material has high strength and humidity stability and has excellent radio wave absorption performance although low in cost.

The invention discloses a tin-based perovskite solar cell with optimized components and a preparation method thereof. The tin-based perovskite solar cell structurally comprises an indium tin oxide (ITO) conductive glass layer, an electron transport layer, a perovskite light absorption layer, a hole transport layer and a silver electrode layer in sequence, the material of the electron transport layer is PC61BM. Phenylethylamine halide salt is introduced into the perovskite precursor solution, thin film crystallization is improved, non-radiative recombination is inhibited, and the charge extraction capacity is improved. The phenylethylamine halide salt and the phenylethylamine halide salt derivative remarkably improve the photoelectric property of the tin-based perovskite solar cell, so that the photoelectric conversion efficiency of the tin-based perovskite cell can reach 10.51%, the stability of the prepared tin-based perovskite cell is remarkably improved, and further development of the tin-based perovskite cell is promoted.