Abstract:
PROBLEM TO BE SOLVED: To provide a copper/indium/gallium/selenium(CIGS)-based or copper/zinc/tin/sulfur(CZTS)-based thin film solar cell in which peeling phenomenon does not take place between thin film layers, and improved durability and photoelectric conversion efficiency are ensured while controlling the change of a back electrode layer molybdenum into molybdenum diselenide.SOLUTION: In a CIGS-based or CZTS-based thin film solar cell including a back electrode layer 200 and a light absorption layer 300, composition of the light absorption layer is CuInGa(SSe)(0.85≤x
Abstract:
PROBLEM TO BE SOLVED: To provide a catalyst which may improve sulfur poisoning tolerance characteristics while improving the de-NOx efficiency at temperatures in a wide range from low temperatures to high temperatures.SOLUTION: Provided is a catalyst comprising: a support including titanium oxide; an active catalyst component including vanadium oxide; and a co-catalyst including antimony and cerium, in which the catalyst is included in a de-NOx reduction reaction that decomposes nitrogen oxide.
Abstract:
PROBLEM TO BE SOLVED: To provide a method in which densifying and large area making sinter can be performed even at a low temperature sinter temperature such as an insite sinter process for large area making and cost reduction of a ceria-based composite electrolyte.SOLUTION: There are provided a ceria-based composition which comprises ceria or metal doped ceria, and bismuth oxide or metal doped bismuth oxide, and at least includes metal doped ceria and/or metal doped bismuth oxide, where the bismuth oxide or the metal doped bismuth oxide of 10 wt.% or more and less than 50 wt.% is included in the total composition, a ceria-based composite electrolyte powder, and a sinter method of the same, and a sinter body of the same. Even at low temperature for example at most 1000°C far from an existing sinter temperature for example 1400°C, a high composite sinter density can be secured, and ionic conductivity of the composite electrolyte can be raised.
Abstract:
PROBLEM TO BE SOLVED: To provide superparamagnetic nanoparticles having a high surface charge, a uniform particle size and excellent water-dispersibility and a method for producing the same, namely, superparamagnetic nanoparticles exhibiting a small hydrodynamic size of 20 nm or less and a monodispersed distribution and a method for producing the same.SOLUTION: A superparamagnetic nanoparticle comprises: superparamagnetic nanocrystals of 20 nm or less in size; and molecules having 3 to 5 carboxyl groups and bonded to surfaces of the superparamagnetic nanocrystals. A method for producing the superparamagnetic nanoparticles includes the steps of: preparing an alkaline solution with pH 10 to 14; producing a mixed solution in which the molecules containing 3 to 5 carboxyl groups, a divalent transition metal and ferric precursors are dissolved; and adding the mixed solution into the alkaline solution.
Abstract:
PROBLEM TO BE SOLVED: To provide a beam scanning system that detects a bio-substance including cancer and microbes based on a beam scanning using a supercontinuum light source and optical phased array.SOLUTION: The beam scanning system includes: a light source that generates and emits supercontinuum light beam; an optical element that receives the supercontinuum light beam and guides it to at least two paths; and a voltage supply portion that variably supplies a voltage to one of the paths, and changes the phase of light beam guided to the path.
Abstract:
PROBLEM TO BE SOLVED: To provide a reverse osmosis separation membrane providing not only high level salt removal rate but also remarkably improved water permeation rate and pollution resistance and to provide a production method of the same.SOLUTION: A reverse osmosis separation membrane comprises: a porous support body and an LbL (Layer-by-Layer) selection layer on the top of the porous support body; an intermediate layer consisting of a polymer nano thin film between the porous support body and the LbL selection layer; and a layered structure of the LbL selection layer where a first selection layer including a first organic monomer and a second selection layer including a second organic monomer are laminated.
Abstract:
PROBLEM TO BE SOLVED: To provide cardo copolybenzimidazoles, gas separation membranes, and a preparation method thereof.SOLUTION: This invention relates to cardo copolybenzimidazoles, a gas separation membrane using the same and a method for preparing the same. More particularly, cardo copolybenzimidazoles obtained by introducing cardo groups and aromatic ether groups to a polybenzimidazole backbone are synthesized. A gas separation membrane has significantly improved oxygen permeability by using the same, and the method for preparing the same is also provided. The cardo copolybenzimidazoles prepared by the invention have improved solubility as compared to the polybenzimidazole polymers according to the related art, show excellent mechanical properties while maintaining thermal stability so as to be formed into a film shape, and can provide a gas separation membrane having significantly improved gas permeability, particularly, oxygen permeability.