34 results about "Indium halides" patented technology

A lamp includes a discharge sustaining fill which includes cesium halide, one of indium halide and thallium halide, optionally gadolinium halide and a rare earth halide component selected from dysprosium halide, holmium halide, thulium halide, and neodymium halide. In operation without a jacket, the lamp may have a color temperature of from 7,000K to 14,000K and a color rendering index of at least 70 when operated at an arc wall loading in excess of about 2 W / mm2.

A method of synthesising gallium or indium alkoxide from the corresponding gallium or indium halide, the method comprising the step of reacting the gallium or indium metal halide with the alkoxide of an alkali earth metal, to produce the desired metal alkoxide essentially free of chlorine contamination. The method provides a composition comprising a solution of gallium or indium alkoxide of high purity, the composition having a chloride content of less than 30 ppm, a barium or strontium content of less than 30 ppm, and a sodium or potassium content of less than 30 ppm, without requiring any additional steps.

The invention relates to a preparation method of 4,4-dihalotetrahydropyran, comprising the steps of mixing halogenated homoallylic alcohol, aldehydes, indium trihalide and a solvent in a flask, mixingwell to obtain a mixed liquid controlled to be -20 to 0 DEG C, dropwise adding trimethyl halogenosilane slowly, starting reaction, allowing reacting by stirring at a certain temperature for 1-24 h, adding sodium bicarbonate saturated solution for quenching reaction, after the solution layers into an organic phase and an aqueous phase, extracting the aqueous phase with methyl tertiary butyl ether,combining the extract to the organic phase, washing the obtained organic phase with saturated salt water, drying, evaporating to remove an organic solvent to obtain a crude product, and subjecting the crude product by separation and purification by column chromatography to obtain a finished product that is applicable to the field of flame retardants and the field of pesticides. The preparation method has simple process and high yield of product, the product has high purity, indium trihalide of catalyst quantity is used in the reaction system, indium consumption is low, the catalyst cost is low, and the preparation method is economical and practical.

A metal halide lamp has an arc tube including an envelope as an arc tube container made of an oxide-based translucent ceramic material, and the arc tube is filled with luminescent materials comprising at least a cerium halide, a sodium halide, a thallium halide and an indium halide. An amount of the cerium halide is in a range from 20 wt % to 69.0 wt %, an amount of the sodium halide is in a range from 30 wt % to 79.0 wt %, and a total amount of the thallium halide and the indium halide is in a range from 1.0 wt % to 20 wt % with respect to the entire metal halides. Accordingly, the arc discharge is spread, bending of the arc discharge toward the arc tube wall is suppressed, and thus, the metal halide lamp has improved luminescent efficiency, where lowering of the flux maintenance factor is suppressed even after a long-time use, and hues of the luminescent colors are corrected.

The invention belongs to the field of conductive films and discloses an ITO-indium halide bilayer conductive film and a preparation method thereof. The bilayer conductive film includes an ITO layer and an indium halide layer, wherein the ITO layer has a content of 80-97 wt% of In2O3 and 3-20% of SnO2, and the halogen in the indium halide is one selected from the group consisting of F, Cl or Br. The present invention uses a magnetron sputtering apparatus to prepare the ITO-indium halide bilayer conductive film. The conductive film has a visible light transmittance of 85-90% in the wavelength range of 450-790 nm, a square resistance range of 20-90 omega / square, and a surface work function of 5.5-6.1 eV.

The present invention provides a discharge lamp capable of improving luminous efficiency, suppressing rise in tube voltage, prolonging life, and irradiating light of a desired color even if it is lit with low power. It includes: a light-emitting part having a discharge space filled with a discharge medium containing a metal halide and an inert gas, and substantially not containing mercury; and a pair of electrodes protruding into the discharge space and separating Arranged facing each other at a predetermined distance. The metal halides include scandium halides, sodium halides, indium halides, and zinc halides. When the weight of the scandium halide is Ms and the weight of the sodium halide is Mn, 0.8≦Mn / Ms≦1.3. The weight ratio of the indium halide to the metal halide is 0.3 wt% or more and 2.0 wt% or less.

The invention discloses a method for preparing a composition containing indium alcoholate and tin alcoholate and the composition containing indium alcoholate and tin alcoholate prepared thereby. The method comprises the following steps: a, reacting anhydrous indium halide and anhydrous tin halide dissolved in a first solvent with an alcohol having 3 to 20 carbon atoms at a first reaction temperature between 40 DEG C below zero and 60 DEG C to obtain first solution containing an indium alcoholate precursor and a tin alcoholate precursor; and b, stepwise dripping alkali catalyst solution containing an alkali catalyst and a dilute solvent into the first solution, continuing reaction at a second reaction temperature between 40 DEG C below zero and 60 DEG C and precipitating a salt precipitate, and removing the salt precipitate to obtain the composition containing the indium alcoholate and the tin alcoholate. The first solvent does not contain hydroxyl and can dissolve the anhydrous indiumhalide, anhydrous tin halide, the alkali contact and the alcohol, and the dilute solvent may be the first solvent or the alcohol.

The invention describes a mercury-free high-intensity gas-discharge lamp (1) comprising a discharge vessel (5) enclosing a fill gas in a discharge chamber (2) and comprising a pair of electrodes (3, 4) extending into the discharge chamber (2), for which lamp (1) the fill gas is derived from a salt fill introduced into the discharge chamber (2) prior to sealing, which salt fill is free of scandium and includes a halide composition comprising a sodium halide to a proportion of at least 65 wt% and at most 97.2 wt%,a thallium halide to a proportion of at least 2 wt% and at most 25 wt%, and an indium halide to a proportion of at least 0.5 wt% and at most 25 wt%.

The invention discloses a method for preparing tetrahedral light-emitting indium phosphide / zinc sulfide core-casing quantum dots. The method comprises the following steps: preparing high-boiling point tris(dialiphatic amido) phosphine, preparing InP quantum dot cores, preparing InP / ZnS core-casing quantum dots and separating the InP / ZnS core-casing quantum dots. Through the use of the high-boiling point tris(dialiphatic amido) phosphine as a phosphorus source, the price is low, the chemical structure is stable, the reaction is mild and safe, and gas is not produced. All reaction precursors are common chemical reagents and low in toxin and safe to store and use. The luminescent color of the InP / ZnS core-casing quantum dots can be precisely controlled simultaneously by the reaction temperature, the ratio of indium halide to the tris(dialiphatic amido) phosphine, the type of the halide and the reaction time, and high fluorescence quantum yield can be ensured.