Chu, Van Ben Park, Se Jin Park, Gi Soon Jeon, Hyo Sang Hwang, Yun Jeong Min, Byoung Koun 2024-01-20T04:34:48Z 2024-01-20T04:34:48Z 2021-09-05 2016-03 0256-1115 https://pubs.kist.re.kr/handle/201004/124338 Easily processed, low cost, and highly efficient solar cells are desirable for photovoltaic conversion of solar energy to electricity. We present the fabrication of precursor solution processed CuInGaS2 (CIGS) thin film solar cells on transparent indium tin oxide (ITO) substrates. The CIGS absorber film was prepared by a spin-coating method, followed by two successive heat treatment processes. The first annealing process was on a hot plate at 300 A degrees C for 30 min in air to remove carbon impurities in the film; this was followed by a sulfurization process at 500 A degrees C in an H2S(1%)/Ar environment to form a polycrystalline CIGS film. The absorber film with an optical band-gap of 1.52 eV and a thickness of about 1.1 A mu m was successfully synthesized. Because of the usage of a transparent glass substrate, a bifacial CIGS thin film device could be achieved; its power conversion efficiency was measured to be 6.64% and 0.96% for front and rear illumination, respectively, under standard irradiation conditions. English KOREAN INSTITUTE CHEMICAL ENGINEERS Semi-transparent thin film solar cells by a solution process Article 10.1007/s11814-015-0200-1 1 KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.33, no.3, pp.880 - 884 KOREAN JOURNAL OF CHEMICAL ENGINEERING 33 3 880 884 scie scopus kci ART002080680 000371795000018 2-s2.0-84953229585 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article Solar Cell CIGS ITO Precursor Solution Thin Film