Abstract:
본 발명은 황동광계 태양전지의 광흡수층을 형성하는 방법에 관한 것으로서, 황동광계 화합물의 전구체를 포함하는 박막을 형성하는 단계; 및 상기 박막에 빛을 조사하는 단계를 포함하며, 상기 황동광계 화합물 전구체가 빛 에너지를 흡수하여 결정화가 진행되는 것을 특징으로 한다. 본 발명은, 황동광계 광흡수층을 형성하는 과정에서 열을 가하지 않고 빛을 이용함으로써, 열에 의해서 기판이 손상되는 문제없이 황동광계 광흡수층을 형성할 수 있는 효과가 있다. 또한, 황동광계 광흡수층을 형성하는 과정에서 열을 가하지 않고 빛을 이용함으로써, 몰리브덴 후면전극이 가열되어 MoSe 2 가 형성되는 문제가 없다. 나아가, 박막에 깊이 침투하는 장파장 범위의 빛을 먼저 조사하고 얕게 침투하는 단파장 범위의 빛을 나중에 조사함으로써, 아래쪽에서부터 순차적으로 황동광계 광흡수층을 형성할 수 있는 효과가 있다.
Abstract:
The present invention relates to a method of manufacturing a quality CZTSe light absorption thin film based on a simultaneous vacuum evaporation process. The method includes: (a) a step of depositing Cu, Zn, Sn, and Se onto a substrate by evaporating the same simultaneously; and (b) a step of lowering the temperature of the substrate and depositing Zn, Sn, and Se by evaporating the same simultaneously. By performing a simultaneous vacuum evaporation process and then performing an additional evaporation process while lowering the temperature of the substrate, the present invention is able to resolve the problems due to the loss of Sn accompanied in a high-temperature simultaneous vacuum evaporation process. A CZTSe light absorption thin film manufactured by the manufacturing method given in the present invention has excellent membranous property so that a CZTSe solar cell manufactured using the same is able to have improved photoelectric conversion efficiency.
Abstract:
본 발명은 CI(G)S계 원소를 포함하는 두 종류 이상의 이성분계 나노입자, CI(G)S계 원소를 포함하는 용액 전구체, 알코올계 용매 및 킬레이트제를 혼합하여 제조한 슬러리를 사용함으로써 CI(G)S계 박막과 몰리브데늄 사이에 형성되는 탄소층을 감소시킬 수 있는 CI(G)S계 박막의 제조방법에 관한 것이다. 구체적으로는, 본 발명에 따른 CI(G)S계 박막의 제조방법은 CI(G)S계 원소를 포함하는 두 종류 이상의 이성분계 나노입자, CI(G)S계 원소를 포함하는 용액 전구체, 알코올계 용매 및 킬레이트제를 혼합하여 슬러리를 제조하는 단계(단계 a); 상기 슬러리를 비진공 코팅하여 CI(G)S계 박막을 형성하는 단계(단계 b); 및 상기 형성된 CI(G)S계 박막에 셀렌화 열처리하는 단계(단계 c)를 포함한다.
Abstract:
Disclosed are a vacuum evaporation source with a source residue discharge type shutter and an evaporation device including the same. The vacuum evaporation source with the source residue discharge type shutter comprises a vacuum evaporation source body including an outer container which provides a cylindrical inner space, a crucible which is mounted inside the outer container, and a heater which is arranged between the outer container and the crucible and heats the crucible; and a shutter which is disposed at the output side of the vacuum evaporation source body to open and close the output of the crucible and has multiple flow guides extended from an area corresponding to the output of the crucible to the outer area of the outer container to discharge a source residue condensed at the inner surface facing the output of the crucible to the outside of the outer container. The evaporation device according to the present invention has the above-described configuration and comprises multiple vacuum evaporation sources disposed to be inclined to the center of a substrate in a vacuum chamber.
Abstract:
PURPOSE: A method for forming a ZnO concavo-convex structure and a solar cell using the same are provided to form a uniform thin film on a concavo-convex structure by using a wet etching method. CONSTITUTION: A substrate (10) is prepared. A nanostructure (20) of which height and width is nanometer scale is formed. A zinc oxide thin film (30) is formed on the substrate having the nanostructure. The zinc oxide thin film is wet-etched. A concavo-convex structure (35) is formed by etching the periphery of the nanostructure.
Abstract:
태양전지용 CZTSe계 박막의 제조방법 및 그 방법에 의해 제조된 CZTSe계 박막이 개시된다. 본 발명의 CZTSe계 박막의 제조방법은, (S1) Cu, Zn, Sn 및 Se을 동시진공증발법에 따라 기판에 증착하는 단계; 및 (S2) 감소된 기판 온도에서 Sn과 Se을 동시진공증발법에 따라 추가로 증착시키는 단계를 포함한다. 본 발명에 따르면, 고온의 기판 온도에서 Cu, In, Sn, Se를 동시진공증발법을 이용하여 증착한 후 그보다 낮은 기판 온도에서 Sn과 Se을 추가로 증착함으로써 높은 기판 온도에서의 열처리에 의한 Sn 손실을 최소화하고, 박막 내 원소 분포를 균일하게 하여 궁극적으로 에너지 변환효율이 높은 태양전지용 CZTSe계 박막을 제조할 수 있다.
Abstract:
PURPOSE: A rear reflective film for a thin film solar cell, a forming method thereof and the thin film solar cell including the same are provided to improve the scattering reflectance of a wavelength area by improving the surface illumination of the rear reflective film. CONSTITUTION: An aluminum layer(22) is formed on a substrate. One or more materials selected from Si, O, Cu and Pt dope the aluminum layer. The doped aluminum layer intensifies crystal growth. A transparent conductive film(24) is formed on the surface of the doped aluminum layer. A silver coating layer(23) is formed on the doped aluminum layer.
Abstract:
PURPOSE: A method for manufacturing a CIS based compound thin film using a rapid thermal process and a method for manufacturing a thin film solar cell using the CIS based compound thin film are provided to improve the efficiency of a light absorbing layer by increasing the crystallization of the CIS based compound thin film. CONSTITUTION: A CIS based compound thin film is formed on a substrate. A thermal selenization process of the CIS based compound thin film is performed by using a rapid thermal process. The CIS based compound thin film includes a CIS compound thin film, a CIGS compound thin film, or CZTS compound thin film. Se vapor is produced by heating Se metal. Se is vacuously deposited on the CIS based compound thin film.
Abstract:
PURPOSE: A Cu-In-Zn-Sn-(Se,S) thin film for solar cell and a preparation method thereof are provided to cut down manufacturing costs by reducing the amount of usage of In. CONSTITUTION: In a Cu-In-Zn-Sn-(Se,S) thin film for solar cell and a preparation method thereof, the Cu-In-Zn-Sn-(Se,S) thin film for solar cell is used as a light absorption layer in a solar cell. The Cu-In-Zn-Sn-(Se,S) thin film for solar cell is a CuInZnSnS4 thin film, a CuInZnSnSe2 thin film, or a CuInZnSnS4Se2 thin film. In the Cu-In-Zn-Sn-(Se,S) thin film,(Zn+Sn) /(In+Zn+Sn) is between 0 and 0.5.
Abstract:
PURPOSE: An apparatus and a method for manufacturing an I-III-VI2 compound semiconductor thin film are provided to improve reactivity by using a cracker cell which controls the amount of selenium gas or sulfur gas. CONSTITUTION: A substrate holder(112) is formed in a chamber(110). A transparent window is formed on the bottom of the chamber. An upper lamp unit(120) including a heating lamp(122) is hinge-combined with the opened upper side of the chamber. A lower heating lamp including a heating lamp(132) is combined with the lower side of the chamber. A cracker cell(140) supplies selenium gas or sulfur gas to the chamber.