Presentation Information
[24a-22C-8]Spray Coated Perovskites for Industrially Viable Solar Cell Fabrication
〇(PC)Calum McDonald1, Abduheber Mirzehmet1, Vladimir Svrcek1, Hitoshi Sai1, Takurou N. Murakami1, Takuya Matsui1 (1.AIST)
Keywords:
perovskite,spray coating,gas quenching
Lead halide perovskites have been widely demonstrated to be an excellent photovoltaic material and have been employed in single junction solar cells, and tandem solar cells with various sub-cell photovoltaic materials such as silicon. The solution-processable nature of perovskite solar cells, wherein the perovskite layer, as well as the carrier transport layers, can be deposited from a solution-based precursor, allows for the potentially facile deposition of perovskites over large areas using roll-to-roll manufacturing processes such as blade coating, slot-die coating, ink-jet printing and spray coating. The main advantages of spray coating [1] over the aforementioned techniques is it’s high speed deposition over large areas, the compatibility with a wide range of solvents and therefore the possibility to deposit all transport and active layers, and it’s non-contact nature which mitigates issues such as the edge effect.
Here, we report our progress in the fabrication of spray coated single junction perovskite solar cells using an atomizer spray nozzle. We demonstrate spray coated perovskites in single junction using the perovskite (Rb0.05FA0.79MA0.16)Pb(I0.85Br0.15)3 with a bandgap of 1.62 eV. In order to avoid the use of antisolvent usually employed in spin-coating, a gas-quenching technique [1] was used to evaporate the excess solvent and reach the supersaturated state. This was then followed by an annealing step at 100°C. The typical devices achieved power conversion efficiencies of approximately 17%.1
[1] C. E. J.; Spooner, et al., Adv. Sci. 2022, 9 (14).
Acknowledgement: This work was conducted under a project commissioned by NEDO, Japan.
Here, we report our progress in the fabrication of spray coated single junction perovskite solar cells using an atomizer spray nozzle. We demonstrate spray coated perovskites in single junction using the perovskite (Rb0.05FA0.79MA0.16)Pb(I0.85Br0.15)3 with a bandgap of 1.62 eV. In order to avoid the use of antisolvent usually employed in spin-coating, a gas-quenching technique [1] was used to evaporate the excess solvent and reach the supersaturated state. This was then followed by an annealing step at 100°C. The typical devices achieved power conversion efficiencies of approximately 17%.1
[1] C. E. J.; Spooner, et al., Adv. Sci. 2022, 9 (14).
Acknowledgement: This work was conducted under a project commissioned by NEDO, Japan.