Colloidal Ink Engineering for High-Performance Slot-Die Processed Perovskite Solar Cells
발표자
나석인 (전북대학교)
연구책임자
나석인 (전북대학교)
초록
내용
In this study, we introduce a new method for fabricating high-performance perovskite solar cells using a Slot-Die process with colloidal inks (CI). By incorporating toluene and chlorobenzene as antisolvents to DMSO, we developed CI with improved rheological properties over conventional inks. This modification enhances wettability, promotes heterogeneous nucleation, and lowers crystallization activation energy, leading to high-quality perovskite films. We thoroughly examined how ink composition, rheology, and crystallization affect device performance. The optimized CI achieved up to 21.32% efficiency, excellent long-term stability, and high scalability, with 20.26% and 19.15% efficiencies for 2.7cm² and 8.64cm² minimodules, respectively. These results will provide valuable insights into fundamental aspects of CI for high-quality perovskite film formation and also suggest a promising approach for the commercialization of high-performance perovskite solar cells and modules.