47results about How to "High absorbance coefficient" patented technology

The invention discloses an antimony-base compound thin film solar cell and a manufacturing method of the antimony-base compound thin film solar cell and belongs to the manufacturing field of photoelectric material and thin film solar cells. The problems that in an existing compound thin film solar cell, needed material is little in the earth crust, high in price and toxic to the human body or complex in production technology are solved. The antimony-base compound thin film solar cell comprises a substrate, a back electrode layer, a P-type absorption layer, an N-type buffering layer, an oxide thin film window layer and metal gate electrodes in a sequential deposition mode. The P-type absorption layer is made of CuXSbybetaZ material, wherein beta is S or Se. The material of the P-type absorption layer is selected from high-abundance elements in the earth crust, wherein the material is rich in resource and environmentally friendly because no toxic components are contained, the range of the energy gap of the elements is about 0.5 ev-2.5 ev, the spectral response range is wide, the light absorption coefficient is up to 105 cm-1, and therefore the compound thin film solar battery composed of the material has excellent photovoltaic performance and is environmentally friendly, and low-cost production is expected to be achieved.

The invention discloses a S,S-dioxo-dibenzothiophene unit-containing electron donor polymer and a use thereof. The main chain of the S,S-dioxo-dibenzothiophene unit-containing electron donor polymer contains a S,S-dioxo-dibenzothiophene unit. Through Stille and Suzuki polymerization methods, a novel D-A structure conjugated polymer is constructed. The S,S-dioxo-dibenzothiophene unit has good flatness and high electronegativity. Through the S,S-dioxo-dibenzothiophene unit, the polymer has a deep HOMO energy level, strong intermolecular interaction, a high light-absorption coefficient, high mobility and high photoelectric response so that the related polymer has wide application prospects in solar cells or organic field effect transistors.

The invention belongs to the field of molecular imaging reagents ad relates to an active near infrared fluorophore for rapidly marking bioactive molecules. A general formula of the active near infrared fluorophore is IRP-B-NHS, wherein IRP is an anthocyanin near infrared fluorophore; B is an aromatic group introduced to the secondary position of the anthocyanin fluorophore by virtue of a carbon-carbon bond; NHS is N-hydroxysuccinimide eater. A preparation method of the active near infrared fluorophore comprises the following steps: with the anthocyanin fluorophore as a parent, introducing benzene carboxylic acid into the fluorophore by virtue of the carbon-carbon bond through Suzuki-Miyaura reaction, modifying phenyl carboxylic acid to produce the N-hydroxysuccinimide eater, reacting with primary amine in a biomolecule under the physiological condition, and marking the biomolecule with the near infrared fluorophore to realize noninvasive tracing. The active near infrared fluorophore is capable of rapidly, safely, effectively and stably marking the bioactive molecules including polypeptide, proteins, antibodies or polymer molecules and has important significance of noninvasively monitoring and quantifying distribution of target active molecules in vivo.

The invention discloses a preparation method and application of a nano-silver probe for detecting mercury ions. The preparation method comprises the steps of stirring a sodium citrate-nano-silver solution at normal temperature, and adding a Tween20 solution while stirring to obtain the nano-silver probe. The application method of the nano-silver probe comprises the steps of adding the nano-silver probe into a sodium chloride solution, mixing uniformly, adding a solution to be detected into the mixed liquid for reacting at normal temperature, measuring ultraviolet and visible absorption spectrum of the product solution, judging whether the solution to be detected contains mercury ions according to the absorbance change, and calculating the concentration of the mercury ions according to a linear regression equation. The preparation method and the application process of the nano-silver probe are simple, the condition is mild, the cost is low, and the nano-silver probe is high in mercury ion detecting sensitivity, good in selectivity and high in absorptivity.

The invention discloses an antimony-selenide thin-film solar battery using black phosphorene as a conducting material and a preparation method thereof. The solar battery is characterized in that the battery comprises a metal positive electrode 1, an n type heavily-doped black phosphorene film 2, an n type molybdenum disulfide 3, an intrinsic hydrogenated nano crystalline silicon film 4, a p type antimony selenide film 5, a p type heavily-doped black phosphorene substate 6, and a metal negative electrode 7. According to the invention, the solar battery has the following advantages: the molybdenum disulfide being a direct band-gap semiconductor material is used to form a buffer layer, the antimony selenide having a high absorptivity is used as absorption layer, the intrinsic hydrogenated nano crystalline silicon is used for realizing passivation of a pn junction interface, so that the defect-mode density of the interface is reduced; and because the black phosphorene is used as the conducting material, the series resistance of the battery is reduced, the light current is increased substantially, and the photoelectric conversion efficiency of the antimony-selenide thin-film solar battery is improved.

The invention provides a novel fluorescent dye structure and a synthesis method thereof. The anthracene structure fluorescent dye of the type has a high light absorption coefficient similar to that of fluorescein molecules, a high quantum yield and the like and meanwhile has more bathochromic-shift excitation wavelength and emission wavelength. The synthesis method is simple and economical and suitable for large-scale synthesis and group modification of a molecular structure. According to the anthracene fluorescent dye synthesis and application, phosphatase substrate molecules with a fluorescent generation property can be obtained through phosphorylation modification conducted on the molecules, and wide biological application prospect is achieved.

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 preparation method of a nitrogen-doped titanium dioxide mesoporous visible light photocatalyst, and belongs to the field of novel materials. The preparation method is mainly characterized by comprising the following steps: preparing a compound titanium silicon oxide by taking titanium alkoxide and tetraethoxysilane as main raw materials and inorganic acid as a hydrolysis catalyst according to a sol-gel method, drying, grinding and sieving the compound oxide, and performing high-temperature calcinations to remove organic matters from gel; nitriding calcined powder in flowing ammonia gas at 850-950 DEG C, cooling to room temperature, washing through an alkaline solution, and dissolving silicon dioxide and excess nitrogen to obtain the nitrogen-doped titanium dioxide mesoporous visible light photocatalyst. The nitrogen-doped titanium dioxide mesoporous visible light photocatalyst is an agglomerate formed by nitrogen-doped titanium dioxide with the mesoporous and crystal particle sizes less than 10 nm, the specific surface area is more than 150 m<2>/g, and the spectral response range is expanded to the wavelength of 600 nm.

The invention discloses a high-flux continuous flow analysis method for water-soluble sugar in a tobacco gene editing material. The high-flux continuous flow analysis method comprises the following steps: A, accurately weighing 0.25g of a sample containing the water-soluble sugar and putting the sample into a 25mL sample tube; putting sample feeding tubes filled with the weighed sample on a samplefeeding disc of an automatic sample feeding device of a continuous flow analyzer in sequence until the sample feeding disc is fully filled with the sample feeding tubes; B, adding 25mL of a 5 percentacetic acid solution into each sample tube by utilizing a pipette; then inserting inner sleeves with filtering sieve plates with the pore diameter of 0.45mu m at the bottom in sequence, so as to prevent the solution from being splashed in an oscillation and extraction process; after inserting the inner sleeves, putting the sample disc with the inserted inner sleeves onto an oscillator and carrying out oscillation and extraction; C, after finishing the extraction, pressing the inner sleeves and introducing an extracted solution into the inner sleeves through the filtering sieve plates; then putting the sample disc on the automatic sample feeding device of the continuous flow analyzer and only inserting a sample feeding needle of the automatic sample feeding device into supernatant in the inner sleeve each time to suck a filtered sample; then transferring the filtered sample into the continuous flow analyzer and analyzing.

A bulk heterojunction-type organic photovoltaic cell, i.e., BHJ solar cell, has a photoelectric conversion layer containing a mixture of a donor domain and an acceptor domain. The donor domain contains a polymer as a donor (photoelectric conversion material), and the polymer is obtained by reaction of a polyphenylene represented by the following general formula (1). For example, the acceptor domain contains phenyl-C₆₁-butyric acid methyl ester (PCBM) as an acceptor. At least one of R1 to R6 in the general formula (1) is an alkoxy group, and R7 to R10 independently represent a hydrogen atom, an alkyl group, or an alkoxy group.

The invention discloses a method for preparing a perovskite thin film through low temperature quenching and an application of the perovskite thin film and belongs to the technical field of solar cells. The method comprises the following steps of (1) coating a substrate with a perovskite precursor solution; (2) soaking the coated liquid film into a quenching medium for quenching; (3) taking out thequenched thin film and drying the quenched thin film by using a gas; and (4) annealing the dried thin film at certain temperature. According to the perovskite thin film prepared by using a low temperature quenching method, the green environmental quenching medium is adopted as a solvent extraction agent, no toxic anti-solvent is utilized and no surfactant is added, so that the prepared thin filmis compact and free of a hole and has very high absorption coefficient and carrier mobility, and a perovskite solar cell manufactured by adopting the thin film still has very high photoelectric conversion efficiency and stability.

The invention relates to an Au@Cu2-deltaX nanoscale crystal and a preparation method and application thereof and belongs to the field of nanoscale materials. The crystal is the nanoscale crystal of a core-shell structure, Au serves as the core, Cu2-deltaX serves as the shell, X is S, Se or Te, and delta is 0-1. The method comprises the steps that Au@CdX nanoscale crystals are dispersed in a non-polar organic solvent, tetrakiscopper hexa-fluorophosph (I) or a solution thereof is added, and reaction liquid is obtained after even mixing; and absolute ethyl alcohol is added for precipitation and centrifugalization to obtain the crystal. The crystal can be applied to the fields of photo-thermal conversion, cancer photo-thermal treatment and the like. The crystal has high light absorptivity and high photo-thermal conversion coefficient at a near infrared region and fills in the technical blank of bimodal surface plasmon resonance (SPR) coupled photo-thermal conversion composite materials. The method can be used for adjusting the size, morphology and the shell layer chemical constituents of the crystal, the conditions are mild, easy and feasible, and a crystal absorption spectrum can be adjusted in a visible light-near infrared light region.

The invention discloses a bismuth tungstate heterojunction composite material loaded with copper indium quantum dots as well as a preparation method and application thereof. The composite material is a sulfur indium copper quantum dot-modified bismuth tungstate heterojunction. The preparation method comprises the following preparation steps: mixing and stirring homemade sulfur indium copper quantum dots and a bismuth tungstate flower-like multi-stage structural material in a chloroform solution, performing ultrasonic treatment, heating till complete solvent evaporation and calcining a dried mixture under a nitrogen atmosphere to obtain the sulfur indium copper quantum dot-modified bismuth tungstate heterojunction composite material. The preparation method disclosed by the invention uses the lowly-toxic sulfur indium copper quantum dots to replace traditional cadmium or lead-containing quantum dots, so that the synthetic process is green and environment-friendly; the activity of a synthesized composite photo-catalyst is enhanced, so that the synthesized composite photo-catalyst can be used as a volatile organic pollutant photo-catalyst.

The invention discloses a paper-like-based flexible ultraviolet detector based on interface optimization and a preparation method thereof. A porous filter membrane is used as a flexible substrate; a silver nanowire thin film layer, a zinc oxide nanowire thin film layer and a CsPbBr3 nanosheet thin film layer are sequentially prepared on the flexible substrate to serve as a bottom electrode layer,a light sensing layer and an interface optimization layer respectively; single-layer graphene is attached to the top of the CsPbBr3 nanosheet thin film layer to serve as a transparent electrode; and the flexible ultraviolet detector with the silver nanowire/zinc oxide nanowire/CsPbBr3 nanosheet/graphene structure is constructed. The used solution method-based device construction process is simplein step and low in cost, and has the potential of large-area industrial production; and the prepared paper-like-based flexible ultraviolet detector has relatively high ultraviolet response and stablelight response performance.

The invention belongs to the field of fluorescent imaging reagents and relates to a dark red fluorescent active ester IR640B-NHS which can be rapidly marked, and a precursor IR640B of the ester. According to the ester, 2,3,3-trimethylindole is adopted as a matrix which reacts with raw materials such as butane sultone, then a cyanine type fluorescent group with a sulfonic group is synthesized, further through a Suzuki-Miyaura reaction, phenyl carboxylic acid is introduced into a fluorescent group through a carbon-carbon bond, and the phenyl carboxylic acid is modified to generate an N-hydroxylcarboxyfluorescein diacetate succinimidyl ester. The active ester can react with a primary amino group in biological macromolecules under physiological conditions, and then dark red fluorescent groupscan be marked on target molecules through amide bonds. By adopting the ester, biological macromolecules such as polypeptide, proteins, antibodies or polymer molecules can be rapidly, safely, effectively and stably marked, in-vitro evaluation on acceptor targeting properties and intracellular distribution of target biological macromolecules can be implemented by using a fluorescence microscope, aflow cytometer and the like, and nondestructive monitoring and quantitative tracing on target molecules can be achieved through living optical imaging.

A data-board dyestuff of the CD-R at a high speed is made up by a proper organic solvent. The dyestuff can resist the optical activity and has the high absorptivity of the UV, the high dissolvability of the organic solvent. The new CD-R has the good valuable in the industry with the character of heat and optical activity resisting, high recording speed and so on.

The invention discloses a polymer solar cell donor material containing a dibenzothiophene sulfoxide unit and a preparation method thereof. The molecular main chain of the polymer donor material contains a dibenzothiophene sulfoxide unit with medium electron-withdrawing ability, and the dibenzothiophene sulfoxide unit and a strong electron-donating or strong electron-withdrawing unit are polymerized through Stille to prepare a novel medium-wide band gap donor material. This type of polymer has the characteristics of excellent oxidation resistance, low HOMO energy level, adjustable absorption spectrum, high molar extinction coefficient and good solubility, and have a great potential application value in the fields of organic solar cells, fluorescent sensors and biological detection.

The invention provides a triple-junction tandem solar cell based on a multi-pyrrole conjugate macrocycle. The forward structure of the triple-junction tandem solar cell sequentially comprises a transparent glass substrate I, a transparent front electrode I, a hole transport layer I, a first active layer I, a first intermediate layer I, a second active layer I, a second intermediate layer I, a third active layer I, an electron transport layer I and a back electrode I; an inverted structure of the triple-junction tandem solar cell sequentially comprises a transparent glass substrate II, a transparent front electrode II, an electron transport layer II, a first active layer II, a first intermediate layer II, a second active layer II, a second intermediate layer II, a third active layer II, a hole transport layer II and a back electrode II, and sunlight shoots from one side of each transparent glass substrate, firstly penetrates through the substrates and the transparent front electrodes, is absorbed by light absorption materials of all cell units sequentially and reaches the back electrodes finally. The active layer materials adopt conjugate macrocyclic compounds utilizing pyrrolyl as a framework, and the tandem cell has the numerous advantages of applicability of popularization and industrialized mass production.

The invention discloses a siloxane group-containing A-DA 'D-A type conjugated organic small molecule and a preparation method and application thereof, a diazosulfide unit is taken as a center, a pyrrole ring and two thiophenes are connected in parallel outwards to form a seven-membered fused ring structure which is taken as a molecular core, siloxane is used for blocking a side chain of a pyrrole ring nitrogen atom, and the siloxane group-containing A-DA' D-A type conjugated organic small molecule is obtained. And a series of siloxane group-containing A-DA 'D-A type conjugated organic small molecules are designed and synthesized by changing different acceptor units. The molecules have the advantages of strong light absorption capability, high mobility and proper electron energy level, and can be used as electron acceptor materials for preparing organic solar cells. The siloxane-terminated side chain of the organic small molecule prepared by the invention has a plurality of far-branched Si-O hybrid chains, so that the steric hindrance of the molecule can be effectively reduced, the interaction among the molecules is increased, the pi-pi stacking distance is reduced, and meanwhile, the molecule shows good solubility in a halogen-free solvent; and the halogen-free solvent and printing technology processing of the high-performance organic solar cell can be realized.