Do, Hyun Woo Kwon, Yong Hun Park, Young-Il Kim, Yong Hoon Cho, Hyung Koun Kim, Honggon 2024-01-19T23:04:32Z 2024-01-19T23:04:32Z 2022-01-25 2018-03 1947-2935 https://pubs.kist.re.kr/handle/201004/121627 Stoichiometric CuInSe2 chalcopyrite photoabsorbers have been synthesized using multi-bath electrodeposition and a three-step selenization process with non-toxic selenium pellets. Among many approaches used to prepare Cu-In metal precursors, multi-stacked electrodeposition is a promising method because of its low-cost process, easy control of the thickness ratio of the Cu-In metal layers, efficient usage of resources, and large-scale mass production. In this study, copper (Cu) and indium (In) metallic precursors with an appropriate thickness ratio were fabricated on Mo/SLG (soda-lime glass). The selenization process was completed in selenium (Se)rich atmosphere at three different temperatures in sequence (120, 350, and 550 degrees C). Unlike the conventional two-step approach, which has adhesion problems, the CuInSe2 films exhibited a relatively smooth and dense morphology with large, well-crystallized grains after selenization and potassium cyanide etching. The thermal treatment at 120 degrees C resulted in intermetallic Cu-In alloys and suppressed excessive vaporization of metallic In and the formation of Kirkendall voids. The CuInSe2 solar cell with a structure of Ni-Al grid/ZnO:Al/i-ZnO/n-CdS/p-CuInSe2/Mo/SLG showed a cell efficiency exceeding 5%. English AMER SCIENTIFIC PUBLISHERS Copper Indium Selenide Solar Cells Fabricated from Electrodeposited Copper/Indium Multi-Stacked Precursors and a Three-Step Selenization Process Article 10.1166/sam.2018.3031 1 SCIENCE OF ADVANCED MATERIALS, v.10, no.3, pp.383 - 388 SCIENCE OF ADVANCED MATERIALS 10 3 383 388 N scie 000419758200013 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Article CUINSE2 THIN-FILMS CU DEPOSITION GROWTH ALLOY Photoabsorber CuInSe2 Electrodeposition Solar Cell Multi-Stacked Three-Step Selenization