Song, Bong-Geun Ahn, Hak-Young Park, Bo-In Park, Hyung-Ho Ju, Byeong-Kwon Lee, Seung Yong Park, Jong-Ku Cho, So-Hye 2024-01-19T20:03:07Z 2024-01-19T20:03:07Z 2021-09-02 2019-05-01 0169-4332 https://pubs.kist.re.kr/handle/201004/120017 Cu(In,Ga)Se-2 thin films have been used as a light absorbing layer in high-efficiency solar cells. Among many methods, the powder process for fabricating Cu(In,Ga)Se-2 thin films is advantageous, due to its simplicity and minimal usage of materials. However, Cu(In,Ga)Se-2 layers produced by the powder process often result in high porosity and small grain sizes, which has been a significant barrier to wide application. In this report, we demonstrate that simple compression of the Cu(In,Ga)S-2 powder coat and a cost-efficient selenization using a mixture of Se and Al2O3 can reduce porosity and enlarge the grain size. It is surmised that improved particle packing density in the powder coats, in addition to sintering with a steady supply of Se vapor, synergistically enhances highly sintered Cu(In,Ga)Se-2 thin films. English ELSEVIER SCIENCE BV SOLAR-CELLS CU(IN,GA)SE-2 EFFICIENCY ABSORBERS Effects of compression and controlled selenization on powder-fabricated Cu (In,Ga)Se-2 thin films Article 10.1016/j.apsusc.2018.12.196 1 APPLIED SURFACE SCIENCE, v.475, pp.158 - 161 APPLIED SURFACE SCIENCE 475 158 161 scie scopus 000458482100019 2-s2.0-85059233184 Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Chemistry Materials Science Physics Article; Proceedings Paper SOLAR-CELLS CU(IN,GA)SE-2 EFFICIENCY ABSORBERS Photovoltaic materials Cu(In Ga)Se-2 Light absorbing layer Thin films Powder process