Abstract:
광흡수층으로서 CZTS를 기반으로 하는 슈퍼스트레이트 구조의 태양전지가 개시된다. 이는 투명기판과 투명기판 상에 배치된 투명성 제1전극층과, 제1전극층 상에 배치된 버퍼층과, 버퍼층 상에 배치된 광흡수층과, 광흡수층에 연결되도록 배치된 제2전극층을 포함한다. 이러한 태양전지는 Mo 물질의 사용이 배제되기 때문에 원천적으로 Mo(S,Se) 2 와 같은 절연 중간층이 생성되지 않기 때문에 높은 효율을 가질 수 있게 된다.
Abstract:
A solar cell having a light absorbing layer with a three-dimensional structure and a manufacturing method thereof are disclosed. The solar cell comprises: a rear electrode layer formed on a substrate; a light absorbing layer which is formed on the rear electrode layer and has a uneven surface provided by a plurality of convex portions on the surface and a plurality of concave portions formed thereby; a window layer arranged to have a p-n junction on the uneven surface of the light absorbing layer; and a buffer layer interposed between the light absorbing layer and the window layer. The conversion efficiency can be improved by generating a lot of charge transmitters since the light absorbing layer has a three-dimensional structure.
Abstract:
3족 염을 이용한 산화아연 박막의 제조 방법 및 그 방법으로 제조된 산화아연 박막이 개시된다. 57℃ 내지 63℃의 온도 범위에서 저온 수열 합성법으로 산화아연 박막 제조시 3족 염 및 트라이 소듐 시트레이트(tri-sodium citrate)를 이용하여 산화아연 박막의 두께 및 표면의 미세구조를 제어함으로써 높은 종횡비를 가지는 복수개의 나노로드를 구비한 산화아연 박막을 제조할 수 있다. 또한 이를 통하여 제조된 산화아연 박막은 향상된 광학적, 전기적 특성 및 표면 형상이 우수한 미세구조를 가질 수 있다.
Abstract:
산화아연 재질의 나노 광 결정이 형성된 발광 다이오드가 개시된다. 나노 광 결정을 형성하기 위해 전류 확산층 또는 발광 구조체 상부에는 씨앗층이 형성된다. 특히, 발광 구조체 상부에 형성되는 씨앗층은 전류 확산층의 기능을 동시에 수행한다. 이를 위해 씨앗층은 알루미늄이 도핑된 산화아연인 AZO로 구성된다. 나노 광 결정은 씨앗층 상부에 홀로그램 리소그래피를 통해 형성된 나노 패턴에 의해 소정의 주기로 형성된다.
Abstract:
PURPOSE: A nanoparticle precursor for optical absorption, a manufacture method thereof, and nano particle for the high quality optical absorption using thereof are provided to manufacture the nanoparticle precursor without using toxic material. CONSTITUTION: A manufacturing method of nano particle precursor for optical absorption comprises the following steps: preparing reaction solution which includes Cu, S and at least one of In and Ga; adjusting pH of the reaction solution; forming nanoparticle precursor for optical absorption by irradiating Microwave to the pH adjusted reaction solution; and separating nanoparticle precursor for optical absorption. A composition ratio of Cu, S, In, or Ga are adjusted in accordance with pH of the reaction solution. The nano particle precursor for optical absorption is one of the following precursors: CuInS2[CIS]nano particle precursor, Cu(In,Ga)S2[CIGS] nano particle precursor, CuIn(S,Se)2[CISS]nano particle precursor, or Cu(In,Ga)(S,Se)2[CIGSS] nano particle precursor. The Microwave irradiates in 100-700W power for 5 minutes to 1 hour.
Abstract:
PURPOSE: A method for manufacturing a zinc oxide thin film having control of a surface morphology and the zinc oxide thin film thereby are provided to control the growth of an epitaxial oxidation zinc thin film and a surface shape of the thin film by a hydrothermal synthesis method. CONSTITUTION: A zinc oxide film manufacturing method uses a hydrothermal synthesis method. A substrate is arranged in a solution for the hydrothermal synthesis. The zinc source is dissolved in the solution for the hydrothermal synthesis. The oxidation zinc thin film having a desired thickness grows on the substrate. The oxidation zinc thin film has a smooth surface. The surface of the oxidation zinc thin film is controlled through the temperature condition change of the solution for the hydrothermal synthesis.
Abstract:
A methane and oxygen generation device, and a method for preparing methane and oxygen by using the device are provided to generate useful methane and oxygen from carbon dioxide and water and to lower the amount of carbon dioxide inducing the greenhouse effect. A methane and oxygen generation device(100) comprises a cathode(110) which is connected with the negative electrode of a power source device(150); an anode(120) which is connected with the positive electrode of a power source device; and a proton electrolyte layer(130) which is located between the cathode and the anode, wherein a carbon dioxide-methane reaction layer(140) is generated between the cathode and the proton electrolyte layer by the reaction of the proton electrolyte layer and carbon dioxide, the cathode is supplied with carbon dioxide to generate methanol and the anode is supplied with water to generate oxygen.
Abstract:
A method for forming SrTiO3/BaTiO3 artificial super lattices on a silicon substrate by using a TiN buffer layer is provided to enhance crystallization and dielectric characteristics by alternatively depositing a SrTiO3 thin film and a BaTiO3 thin film on the substrate. A silicon substrate is inputted in a chamber of a pulse laser depositing apparatus, and then a TiN buffer layer is deposited on the silicon substrate with the TiN buffer layer at a temperature of 650 to 750°C. A SrTiO3 thin film and a BaTiO3 thin film are alternatively deposited on the silicon substrate at a temperature of 300 to 750°C to form artificial super lattices.