[18p-P09-1~54] 12.5 Organic and hybrid solar cells

[18p-P09-42] Preparation Conditions of CsFA Perovskite Layer Using a Spin Coater Equipped with Semi-Automatic Micropipette and Radiation Heater

〇Koo Takai¹, Tomoyuki Tobe^1,3, Masashi Ikegami¹, Tsutomu Miyasaka² (1.Graduate School of Engineering, Toin Univ, 2.Faculty of Biomedical Engineering, Toin Univ, 3.KISTEC)

Keywords:

perovskite,spin coat method,anti-solvent free

Perovskite solar cells can be fabricated using printing methods. One of the candidates for film substrates is ITO-PET film. In our laboratory, we are developing various prototypes using 125μm thick ITO-PET film. The deposition of perovskite layers in our laboratory typically employs a spin-coating method using anti-solvent techniques. During spin-coating, the substrate is held in place by a vacuum chuck. However, issues such as film wrinkling due to the vacuum chuck can arise. Furthermore, repeated removal of the film from various fixing plates can result in damage to the perovskite layers due to film curvature. Therefore, completing the perovskite coating without removing the fixing plate is crucial. Accordingly, we have developed a device that allows continuous spin-coating and heating processes without moving the substrate. With this device, in the preparation of perovskite layers using spin-coating, the precursor solution is spread on the substrate, then an anti-solvent is dripped during substrate rotation, and after spin-coating concludes, immediate heating can proceed.