18 results about "Pseudohalogen" patented technology

The present invention relates to the technical field of perovskite cells, and in particular to a method for preparing a perovskite film, a film, a perovskite cell, and a stacked cell. The preparation method comprises: preparing a buried substrate; the buried substrate comprising an alkali metal formate; forming a porous film containing a compound having a general chemical formula of BX2 on the buried substrate; and reacting the compound having a general chemical formula of BX2 in the porous film with a compound having a general chemical formula of AX to obtain a perovskite film; wherein B is a metal cation; A is an organic amine cation or an alkali metal cation; and X is a halogen ion or a pseudohalogen anion. Under the combined action of the alkali metal ions and the formate ions, the metal halide film forms a well-oriented porous film, and the pores in the porous film serve as channels for the organic amine cations or alkali metal cations to enter the metal halide film, allowing the metal halide within the porous film to fully react.

This invention relates to a fullerene derivative, its preparation method and application, and a tin-based perovskite solar cell photovoltaic device, belonging to the field of optoelectronic materials and devices technology. The fullerene derivative of this invention has the structure shown in Formula I; in Formula I, X... ‑ It is a halide ion or pseudohalogen ion; R is an alkenyl, four-membered cycloalkyl, or dithiocyclopentyl; Fu is C 60 C 70 C 84 Alternatively, it can be an embedded metallofullerene. In the fullerene derivatives of this invention, R is an alkenyl, a four-membered cycloalkyl, or a dithiocyclopentyl group. R can open double bonds or open rings to form polymers. Furthermore, the thiol group after ring opening of the dithiocyclopentyl group and the carbonyl group in the structure can form coordination bonds with divalent tin ions in tin-based perovskite solar cells, thereby regulating the crystallization rate of perovskite and reducing the lattice stress of perovskite. At the same time, the fullerene derivatives have good solubility, reducing the lattice stress generated by rapid crystallization of the perovskite active layer, and further improving the stability of tin-based perovskite solar cells.

The invention provides a lead halide perovskite seed crystal and a preparation method thereof, and a lead halide perovskite microcrystal and a preparation method thereof. The preparation method of the lead halide perovskite seed crystal comprises the following steps: mixing a pseudo-halogen additive, first AX, first BX2 and a first solvent to form first sol, and heating the first sol to separate out crystals to obtain the lead halide perovskite seed crystal. The microcrystal is prepared by using the seed crystal as a raw material through slow heating crystallization. According to the method provided by the invention, the crystallization quality can be improved while the crystallization speed is increased.

Embodiments of the present disclosure are directed to methods of selectively etching silicon. The methods include flowing a precursor comprising one or more of an interhalogen, a halogen-containing species, a pseudohalogen species, a mixture of one or more of the interhalogen, the halogen-containing species, or the pseudohalogen species and one or more of an amine, a phosphine, a glycol, or an acid, or a mixture of one or more of the interhalogen, the halogen-containing species, the pseudohalogen species and a sulfur-containing species, into a semiconductor processing chamber containing a substrate; forming an activated species of the precursor; and exposing the substrate to the activated species to etch the substrate. The methods selectively etch silicon relative to silicon germanium, silicon oxide, and / or silicon nitride.

This invention relates to a solid-state electrolyte based on an organic-inorganic hybrid halogen compound molecule, its preparation, and an all-solid-state battery, belonging to the field of energy storage battery technology. The chemical formula of the solid-state electrolyte of this invention is M. a N b+e Q c X d Y a+bn+cq+dx Z en Or M a N 2b+e Q c X d Y a+cq+ dx Z en O bn M is selected from one of methylamine, ethylamine, propylamine, butylamine, aniline, benzylamine, and phenethylamine; N, Q, and X are different metallic elements; Y is selected from halogens; Z is a pseudohalogen ion; the values ​​of a, b, c, d, and e are in the range of 0.

The invention belongs to the technical field of polarized light-emitting materials, and particularly relates to a chiral perovskite thin film, a preparation method and a circularly polarized light-emitting diode device. Phenylalanine hydrochloride is used as a raw material, a phenylalanine hydrochloride solution and a tetrafluoroborate solution are mixed, an ion exchange reaction is carried out, a chiral compound with tetrafluoroborate as anions and phenylalanine as cations is formed, and a pseudo-halogen substituted chiral ligand is obtained; an anti-solvent is utilized to introduce a pseudo-halogen substituted chiral ligand into a perovskite precursor solution, and a layer of chiral perovskite film is formed on a perovskite interface, so that spin-polarized carriers are selectively and effectively injected by utilizing chiral induced spin, and are compounded in a device to generate circular polarization luminescence.

The application provides a perovskite solar cell, a preparation method and application thereof. The perovskite solar cell comprises a first electrode, a perovskite light-absorbing layer, a passivation layer and a second electrode, wherein the passivation layer comprises a passivation agent, the passivation agent comprises a positive charge group and an electron-rich group, the positive charge group comprises -NH3X, X comprises any one of halogen, pseudohalogen and -COOR, R comprises any one of C1-C6 alkyl, and the electron-rich group comprises any one of C1-C6 halogenated alkyl, C1-C6 alkoxy, C1-C6 alkylthio, -SCN and -SH.

The present application discloses a solar cell, an interface passivation material, a photovoltaic power generation system, and an electric device. The solar cell includes an interface passivation material, the interface passivation material including a first compound represented by chemical formula (1) and / or a second compound represented by chemical formula (2): where Ar is an aromatic group, Q is a functional group containing active hydrogen, A+ is selected from an ammonium group or a phosphonium group, X- is selected from any one of a halogen ion, a pseudohalogen ion, an oxyanion ion, a fluorine-containing borate ion, or a sulfonyl imide anion. The interface passivation material can be used in solar cells to passivate interface defects in the light absorption layer, improve carrier transport performance, and improve the photoelectric conversion efficiency and stability of the solar cell.

The present invention discloses a sulfide solid electrolyte and its preparation method and application. The sulfide solid electrolyte comprises: a core layer, the core layer comprises a structural formula of Li 6‑a PS 5‑a X 1+a At least one of the compounds, X is a halogen atom, a = 0 to 1; a shell layer, the shell layer is arranged on at least a portion of the surface of the core layer, and the shell layer includes a structural formula of Li 6‑a PS 5‑a X 1+a‑b Y b At least one of the compounds, Y is a pseudo-halogen atomic group, and b = 0.1 to 0.9. The sulfide solid electrolyte modified by pseudo-halogen atomic group substitution of the present invention has significantly improved resistance to organic solvent corrosion; at the same time, the dispersion ability of the electrolyte in the slurry is improved, thereby improving the stability and thixotropy of the sulfide solid electrolyte in the electrolyte slurry, and also increasing the solid content of the electrolyte slurry, thereby improving the first-cycle discharge capacity, first coulombic efficiency, and cycle life of the solid-state battery.

This invention belongs to the field of polarized light-emitting materials technology, specifically relating to chiral perovskite thin films, their preparation methods, and circularly polarized light-emitting diode devices. The invention uses phenylalanine hydrochloride as a raw material, mixing phenylalanine hydrochloride solution and tetrafluoroborate solution to undergo an ion exchange reaction, forming a chiral compound with tetrafluoroborate as the anion and phenylalanine as the cation, thus obtaining a pseudohalogenated chiral ligand. Using an antisolvent, the pseudohalogenated chiral ligand is introduced into the perovskite precursor solution, forming a chiral perovskite thin film at the perovskite interface. This allows for the effective injection of spin-polarized charge carriers through chiral-induced spin selectivity, resulting in recombination within the device and the generation of circularly polarized light emission.

The present invention provides photoacid molecules based on dihalogenated methyl o-nitro aromatic compounds and their applications, belonging to the field of photosensitive molecules. The present invention provides the application of dihalogenated methyl o-nitro aromatic compounds or dipseudohalogenated methyl o-nitro aromatic compounds as photoacid molecules. The dihalogenated methyl o-nitro aromatic compounds or dipseudohalogenated methyl o-nitro aromatic compounds produce acidic products under light: light causes the dihalogenated methyl o-nitro aromatic compounds or dipseudohalogenated methyl o-nitro aromatic compounds to rearrange their structures, generating unstable intermediates that decompose to produce the acid corresponding to the halogen or pseudohalogen.

The present invention relates to the synthesis and energy technology fields of colloidal quantum dots, and in particular to a method for preparing large-scale near-infrared luminescent indium phosphide quantum dots. The method includes: adding In(I)Cl, tri-n-octylphosphine, oleylamine, and pseudo-halogen ammonium salt to react, heating and vacuuming to remove excess gas; the pseudo-halogen ammonium salt is thermally decomposed to produce pseudo-halogen ions, indirectly producing In-pseudo-halogen bonds; the temperature continues to rise, a phosphorus source is injected, and the reaction can obtain near-infrared luminescent InP quantum dots, with an emission peak at around 780nm, and a particle size of the prepared InP quantum dots of 10.5±1.3nm; then purifying and encapsulating the shell layer to obtain InP / ZnS / ZnS. The present invention adopts a safe and environmentally friendly pseudo-halogen ammonium salt in-situ treatment method, and the pseudo-halogen ions produced etch off the surface oxygen-containing groups of the indium phosphide quantum dots. After encapsulating the double-shell, the yield of the InP quantum dots is improved.

Embodiments of the present disclosure are directed to selective etching processes. The processes include flowing a precursor comprising one or more of an interhalogen, a halogen-containing species, a pseudohalogen species, a mixture of one or more of the interhalogen, the halogen-containing species, or the pseudohalogen species and an amine or a phosphine, or a mixture of one or more of the interhalogen, the halogen-containing species, or the pseudohalogen species with a sulfur-containing species, into a semiconductor processing chamber containing a substrate, and forming an activated species of the precursor to etch a substrate. The substrate has a plurality of alternating layers of silicon oxide and silicon nitride thereon and a trench formed through the plurality of alternating layers. The silicon nitride layers are selectively etched relative to the silicon oxide layers at an etch selectivity of greater than or equal to 500:1.

The invention discloses a BODIPY derivative and application thereof, the BODIPY derivative is a compound with a structure shown as a general formula (I), in the formula (I), R1, R2, R3, R4, R5 and R6 are independently selected from hydrogen atoms, C1-C6 alkyl groups, C2-C6 alkenyl groups, C3-C8 carbocyclic groups, C1-C6 alkoxy groups, amino groups or substituted amino groups, halogen, pseudo-halogen groups, C1-C6 acyloxy groups, carbonyl groups, carboxyl groups, ester groups, substituted or unsubstituted phenyl groups and nitryl groups; r7 is a hydrogen atom or a carboxyl group; R8 and R9 are hydroxyl groups or hydrogen atoms; ar is an aromatic group; and m and n are integers from 0 to 6. The BODIPY derivative not only can endow a coating with good base material adhesion performance, but also can realize an efficient photodynamic antibacterial effect, and meanwhile, effectively overcomes the defects in the prior art.

The invention relates to methods for dyeing keratin-containing fibers, in particular human hair, using plant polyphenols at a pH value in the range of 1.0-6.9 and / or with a content of at least one salt selected from the alkali metal salts or the ammonium salts of a halide anion or a pseudohalide anion, and subsequent treatment with one or more silver salts. The invention also relates to products and kits for carrying out these dyeing methods.

The invention relates to the technical field of perovskite solar cells, in particular to a halogenated terminal-containing self-assembled monomolecular layer hole transport material, which is Ph-nPACz-X, n is a positive integer from 2 to 10; x is halogen or a pseudo-halogen group. Meanwhile, the invention also discloses a synthesis method of the perovskite solar cell and application of the perovskite solar cell in unijunction and laminated perovskite solar cells. According to the invention, carbazole with a rigid conjugate plane is used as a parent nucleus, and the hole transport performance and the molecular accumulation mode of the material are regulated and controlled through introduction of a benzene ring; by introducing halogen such as iodine, bromine and chlorine and pseudo-halogen groups such as cyano and thiocyano to the tail end of a benzene ring, contact and passivation with a perovskite interface are improved, and energy loss at the interface is reduced; and finally, taking alkyl phosphoric acid with different lengths as anchoring groups to realize substrate self-assembly and effective hole transport. The synthesis method is simple, the synthesis cost is low, and the prepared material can realize dual functions of hole transport and perovskite interface passivation.

The present application provides a perovskite solar cell, a manufacturing method therefor, and the use thereof. The perovskite solar cell comprises a first electrode, a perovskite light-absorbing layer, a passivation layer, and a second electrode. The passivation layer comprises a passivating agent, the passivating agent comprising a positively charged group and an electron-rich group; the positively charged group comprises -NH3X, where X comprises any one of halogen, pseudohalogen, and -COOR, and R comprises any one of C1-C6 alkyl groups; and the electron-rich group comprises any one of C1-C6 haloalkyl, C1-C6 alkoxy, C1-C6 alkylthio, -SCN, and -SH.

The invention belongs to the technical field of X-ray detection, and particularly relates to a pseudo-halogen rare earth double perovskite material with a direct X-ray detection function and a preparation method and application thereof, the chemical formula of the pseudo-halogen rare earth double perovskite material is [(R)-FM3HQ] 2BRe (NO3) 6, (R)-FM3HQ is (R)-N-fluoromethyl-3-quinuclidinol cation, B is Cs < + >, K < + > or Rb < + >, and Re is rare earth cation. Compared with the prior art, the material has the following remarkable advantages: (1) the material has a direct X-ray detection function, and has high sensitivity and lower detection limit; and (2) the material has the characteristics of simple structure, simple synthesis path, cheap and easily available raw materials, low toxicity, environment friendliness and the like, and is suitable for commercial production.