Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP24)
Publication date: 18th October 2023
Metal halide perovskite solar cells exhibit promising potential as an alternative to silicon solar cells for large-scale applications. However, the conventional spin-coating technique faces challenges in controlling perovskite film thickness and uniformity, hampering its viability for mass production. Consequently, the vacuum deposition method emerges as a solution to overcome these limitations, enabling the replication of large-area perovskite solar cells. The modified thermal vacuum deposition method is one of the scalable coating methods that holds promise for inexpensive, uniform, and large-area coating of perovskite layers. This study focuses on optimizing the single-source thermal deposition of PbI2 used for obtaining MAPbI3 perovskite film by a two-step deposition process. Additionally, we conducted a comparative analysis of the reaction of PbI2 film with MAI solution using dipping and spin-coating methods. XRD and SEM images of the MAPbI3 perovskite film revealed the complete reaction between the PbI2 film and the MAI solution. The findings shed light on the optimal PbI2 deposition strategy, offering prospects for enhancing the fabrication process and advancing solar cell technology.