72 results about "Tellurium compounds" patented technology

An all dry method for producing solar cells is provided comprising first heat-annealing a II-VI semiconductor; enhancing the conductivity and grain size of the annealed layer; modifying the surface and depositing a tellurium layer onto the enhanced layer; and then depositing copper onto the tellurium layer so as to produce a copper tellurium compound on the layer.

An x-ray and gamma-ray radiant energy imaging device is disclosed having a temperature sensitive semiconductor detector substrate bump-bonded to a semiconductor CMOS readout substrate. The temperature sensitive, semiconductor detector substrate utilizes Tellurium compound materials, such as CdTe and CdZnTe. The bump bonds are formed of a low-temperature, lead-free binary solder alloy having a melting point between about 100° C. and about 180° C. Also described is a process for forming solder bumps utilizing the low-temperature, lead-free binary solder alloy, to prevent damage to temperature sensitive and potentially brittle detector substrate when assembling the imaging device.

Disclosed is a resin composition which is characterized in that the metal content in the composition is not more than 1000 ppm. The resin composition contains a copolymer which is obtained by copolymerizing 80-99.9 parts by weight of a vinyl monomer mainly containing a (meth)acrylic acid alkyl ester and 0.1-20 parts by weight of a vinyl monomer having a reactive functional group by living radical polymerization, while using, as a polymerization initiator, one of the following: (a) an organic tellurium compound represented by the formula (1) below; (b) a mixture of an organic tellurium compound represented by the formula (1) below and an azo polymerization initiator; (c) a mixture of an organic tellurium compound represented by the formula (1) below and an organic ditellurium compound represented by the formula (2) below; and (d) a mixture of an organic tellurium compound represented by the formula (1) below, an azo polymerization initiator and an organic ditellurium compound represented by the formula (2) below. (In the formula, R<1> represents a C1-C8 alkyl group, an aryl group, a substituted aryl group or an aromatic heterocyclic group; R<2> and R<3> respectively represent a hydrogen atom or a C1-C8 alkyl group; and R<4> represents an aryl group, a substituted aryl group, an aromatic heterocyclic group, an acyl group, an amide group, an oxycarbonyl group or a cyano group.) (R<1>Te)2 (2) (In the formula, R<1> is as defined above).

Novel formulations of tellurium-containing compounds, which are suitable for topical application, are disclosed. The formulations are characterized by high chemical and physical stability and are easy to handle and use.

The invention discloses application of a tellurium based material serving as a negative electrode active material in a sodium-based dual-ion cell, the sodium-tellurium dual-ion cell and a preparationmethod thereof and relates to the field of electrochemical energy storage devices. The invention further discloses application of tellurium, a tellurium compound or a tellurium composite material serving as the negative electrode active material in the sodium-based dual-ion cell. The sodium-tellurium dual-ion cell comprises a negative electrode, a positive electrode, a diaphragm and electrolyte; the negative electrode active material comprises tellurium, the tellurium compound or the tellurium composite material; the positive electrode active material comprises a material capable of being reversibly embedded and dis-embedded into negative ions in the electrolyte; the electrolyte comprises a sodium salt and a non-aqueous solvent. The safety problems existing in the conventional sodium-ion battery taking a carbon material as the negative electrode material that the potential is low, sodium is easily separated out and a tinfoil serving as the negative electrode is simple in volume expansion and is easily powdered are solved. According to the sodium-tellurium dual-ion cell disclosed by the invention, the sodium ion and the tellurium negative electrode can carry out an alloying reaction, the reaction potential is high, and the sodium-tellurium dual-ion cell has the characteristics of being high in safety, high in specific energy density and stable in cycle.

Methods for treating skin conditions such as basal cell carcinoma and/or actinic keratosis are provided, which are effected by administering a pharmaceutically effective amount of a tellurium-containing compound. A pharmaceutical composition for treatment of skin conditions such as basal cell carcinoma an/or actinic keratosis is also provided.

The invention provides a fuel cell membrane electrode employing ruthenium telluride as a cathode and a preparation method. The membrane electrode comprises a proton exchange membrane, a cathode catalyst layer and an anode catalyst layer, wherein a carrier load of the cathode catalyst layer is a ruthenium-tellurium compound catalyst formed by ruthenium and tellurium or a ruthenium-based alloy nano-catalyst. The preparation method of the fuel cell membrane electrode comprises the steps of preparing paste for an anode, preparing the anode catalyst layer, preparing paste for a cathode and preparing the cathode catalyst layer, thereby finally completing preparation of the whole membrane electrode. The fuel cell membrane electrode has the beneficial effects that the fuel cell membrane electrodeis prepared by adopting the ruthenium telluride as the cathode catalyst layer instead of a traditional platinum-based catalyst layer, so that the preparation process is simple and the obtained membrane electrode is stable in performance and high in yield; and a non-platinum catalyst is utilized as the catalyst layer by the cathode, so that the cost of the fuel cell membrane electrode is greatly reduced, the poisoning resistance and the methanol oxidation resistance of the cathode are obviously improved and the fuel cell membrane electrode has a wide application prospect in a methanol fuel celland a small portable hydrogen fuel cell.

Provided are an aqueous coloring agent dispersion for inkjet which achieves high pigment concentration, exhibits favorable redispersion properties after drying, and does not exhibit changes in ink properties even when stored for a long time; and an ink composition using the aqueous coloring agent dispersion. This aqueous coloring agent dispersion contains a coloring agent (I), a liquid medium (II), and a polymer dispersion agent (III). The polymer dispersion agent (III) is an A-B block polymer obtained by copolymerizing via a living radical polymerization method, by using a mixture of an organic tellurium compound represented by formula (1) and an organic ditellurium compound represented by formula (2), or the like, as a polymerization initiator. Therein, the monomer for configuring the A block is at least one type of monomer represented by formula (3), and the monomer for configuring the B block is benzyl methacrylate and/or benzyl acrylate.

A novel neuroprotective agent is disclosed for the treatment and prevention of neurodegenerative disorders which is based on the administration of an effective amount of a tellurium compound which has a specific ability to induce the differentiation and interfere with apoptotic cell death pathways of neuronal PC-12 cells.

Methods for enhancing the immune response of a subject to an immunoeffector, and methods of enhancing interleukin-12 production, which are effected by administering an amount of the immunoeffector and an effective adjuvanting amount of a tellurium-containing compound are provided. The enhanced immune response may be a cell-mediated or a humoral immune response. A pharmaceutical composition, which comprises the tellurium-containing compound, the immunoeffector and a pharmaceutically acceptable carrier is also provided. Use of a tellurium-containing compound as an adjuvant for immunization is also provided.

Methods for treating skin conditions such as basal cell carcinoma and/or actinic keratosis are provided, which are effected by administering a pharmaceutically effective amount of a tellurium-containing compound. A pharmaceutical composition for treatment of skin conditions such as basal cell carcinoma an/or actinic keratosis is also provided.

The invention discloses a method for synthetizing a 2-trifluoromethyl oxazole compound. According to the method, trifluoroacetic anhydride is used as a reaction reagent; an oxime ester derivative is used as a reaction substrate; a tellurium compound and iodine are used as catalysts; in a solvent, heating is performed at 110 to 120 DEG C; stirring reaction is performed for 1 to 8h; the 2-trifluoromethyl oxazole compound is prepared. The synthesis method has the advantages that the yield is high; the raw materials can be easily obtained; the operation is simple and convenient; the functional group universality is good, and the like. Good industrial application prospects are realized.

The invention relates to a catalyst used for vinyl polymerization. In the invention, a tellurium compound is added in a synthesis process of the catalyst. A solid catalyst compound can be obtained by using the solid catalyst compound prepared by the method without adding a separation assistant. The catalyst has the characteristics of high activity and hydrogen regulation sensitivity.

A process for producing a living radical polymer characterized in that a vinyl monomer is polymerized with use of an organotellurium compound represented by the formula (1), an azo type polymerization initiator and a ditelluride compound represented by the formula (2), and the living radical polymer obtainable by the process

wherein R¹ is C₁-C₈ alkyl, aryl, substituted aryl or an aromatic heterocyclic group, R² and R³ are each a hydrogen atom or C₁-C₈ alkyl, and R⁴ is aryl, substituted aryl, an aromatic heterocyclic group, acyl, oxycarbonyl or cyano.

(R¹Te)₂   (2)

wherein R¹ is the same as above.

The invention discloses a mercury-tellurium compound containing transition metal complex ions and a hydrazine-aided preparation method thereof. The mercury-tellurium compound has a general formula of [TM(trien)(N2H4)2]Hg2Te4 or [TM(tepa)(N2H4)]2Hg4Te12, or [TM(trien){Hg2Te4}], or [TM(tepa)]2Hg5Te12, wherein TM is selected from a group consisting of Fe, Co, Ni, Mn and Zn, trien is triethylene tetramine, and tepa is tetraethylenepentamine. The invention also provides the hydrazine-aided preparation method for the compound. The hydrazine-aided preparation method is simple in synthesis, employs elemental tellurium powder as the single tellurium source, needs no intermediate step, substantially reduces reaction temperature in synthesis of the mercury-tellurium compound and does not need protection gas; the prepared compound is convenient to separate and purify; and the structure of mercury-tellurium anions and coordination between the mercury-tellurium anions and transition metal ions can be regulated by using different reaction temperatures and different organic amine ligands.

The invention provides a method for activating a CdTe thin film solar cell, which comprises the steps of providing a CdTe thin film solar cell semi-finished product structure which comprises a substrate, wherein the substrate is provided with a bottom electrode, and a CdS/CdSe buffer layer and a CdTe light absorption layer are sequentially deposited on the bottom electrode; preparing an activating solution, specifically, adding copper chloride, zinc chloride and a tellurium-containing compound into an ammonia water solution containing alkali, and adding hydrazine hydrate to obtain the activating solution after the copper chloride, the zinc chloride and the tellurium-containing compound are completely dissolved; coating the CdTe light absorption layer with the activating solution; and drying the activating solution for reaction, and performing annealing heat treatment to activate the CdTe light absorption layer. The novel activating solution is prepared, the solution plays a role in activation, copper ions in the solution are locked by Te in a co-reduction system, diffusion of the copper ions to the light absorption layer is limited, and the ZnTe: Cu back good contact layer with matched components is obtained. In addition, the activating solution is a reduction system, and oxidation in the activation annealing process is effectively prevented.

The invention discloses a catalyst applied to vinyl polymerization and a preparation method and an application thereof. The catalyst comprises (A) a solid catalyst component containing titanium and (B) an organic aluminum compound, wherein the solid catalyst component is prepared by dissolving magnesium halide into an organic epoxy compound and organic phosphorous compound, adding an electron donor compound to form a uniform solution, reacting with a halide of transition metallic titanium or a derivative thereof, and adding a mixture of organic ethanol and/or methylbenzene of a tellurium compound for treating; the general formula of the organic aluminum compound is AlRnX3-n; in the formula, R is hydrogen or C1-20 carbon atoms, X is halogen, and n is an integer of more than zero and less than or equal to 3; and the ratio of the component B to the component A is 5-1,000 according to the molar ratio of aluminum to titanium. In the preparation process of the catalyst, an assisting precipitating agent is not required to be added; and the catalyst has the advantages of high activity and sensitivity to hydrogen regulation.