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

English Presentation

[18p-P09-13] Exceeding 15% Performance with Energy Level Tuning in Tin-Based Perovskite Solar Cells

〇(P)Liang Wang¹, Qing Shen¹, Shuzi Hayase¹ (1.UEC)

Keywords:

perovskite solar cell

Sn-based perovskite solar cells (PSCs) have emerged as the most efficient alternative to Pb-based counterparts, exhibiting superior power conversion efficiency. This is primarily attributed to their ideal narrow bandgap (~1.4eV), small exciton binding energy, high carrier mobility, and environmentally friendly nature. However, the performance of Sn-based PSCs is hindered by numerous recombination centers and a mismatch in energy levels, limiting overall device improvement. To address these challenges, this abstract proposes a new additive that effectively adjusts perovskite energy levels, facilitating better carrier transport. Additionally, it enhances perovskite film quality and reduces trap density. Implementation of this additive yields significant device enhancement, achieving a notable power conversion efficiency of 15.34%. This breakthrough underscores the additive's potential in advancing Sn-based PSC development.