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 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.