FABRICATION OF CUINXGA1-XSE2 THIN FILMS SOLAR CELL BY PASTE COATING AND SELENIZATION PROCESS WITH SE SOLUTION

摘要

PURPOSE: A method for manufacturing a copper-indium-gallium-selenium(CIGS)-based optical absorbing layer using a selenium solution is provided to reduce cost required for operational facilities by applying or printing selenium or a selenium compound in a solution state. CONSTITUTION: Copper-indium-gallium mixed source is dissolved, and poly-propylene carbonate is added to the dissolved solution in order to prepare ink. The ink is applied or printed on the upper side of a substrate. The substrate is thermally processed under an insert gas atmosphere to form a copper-indium-gallium thin film layer. Selenium or a selenium compound in a solution state is applied or printed on the copper-indium-gallium thin film layer. A drying process is followed. The dried thin film layer is thermally processed to form a CIGS-based optical absorbing layer.