Presentation Information
[9p-P06-22]Effect of ITO Laser Patterning on One-Step Inkjet-Coated CsFA Perovskite Layers
〇Shoukatsu Yamaguchi1, Tomoyuki Tobe2, Ryoto Funayama3, Tsutomu Miyasaka1, Masashi Ikegami1 (1.Toin Univ. of Yokohama, 2.KISTEC, 3.Kishu Giken Kogyo, Co. Ltd.)
Keywords:
perovskite,Inkjet method,anti-solvent free
For the practical application of perovskite solar cells, durability testing is essential. However, suitable sealing materials have not yet been established, so we are currently exploring various types of materials. This study aims to evaluate both the performance of perovskite solar cells and the sealing materials. Inkjet printing is employed to form the perovskite layer on heated substrates without the use of an anti-solvent. This approach is known as the one-step inkjet coating method. Transparent conductive glass or film substrates are patterned using a UV laser marker to make single-line patterns with widths of several hundred micrometers. The edges of these lines are not smooth, which affects the spreading and drying behavior of the perovskite precursor solution ejected from the inkjet head during printing. We fabricated cells with active areas larger than 1 cm2 and investigated how the alignment between the laser-patterned lines and the inkjet-printed perovskite regions influences cell performance. Ink spreading near the laser-patterned lines is a possible cause in decreasing a shunt resistance. Therefore, several printable patterns suitable for sealed cells were tested and compared.