Details

Autor(en) / Beteiligte

• Li, Minghao
• Zhou, Junjie
• Tan, Liguo
• Li, Hang
• Liu, Yue
• Jiang, Chaofan
• Ye, Yiran
• Ding, Liming
• Tress, Wolfgang
• Yi, Chenyi

Titel

Multifunctional succinate additive for flexible perovskite solar cells with more than 23% power-conversion efficiency

Ist Teil von

• Innovation (New York, NY), 2022-11, Vol.3 (6), p.100310-100310, Article 100310

Ort / Verlag

Elsevier Inc

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Flexible perovskite solar cells (FPSCs) have emerged as power sources in versatile applications owing to their high-efficiency characteristics, excellent flexibility, and relatively low cost. Nevertheless, undesired strain in perovskite films greatly impacts the power-conversion efficiency (PCE) and stability of PSCs, particularly in FPSCs. Herein, a novel multifunctional organic salt, methylammonium succinate, which can alleviate strain and reinforce grain boundaries, was incorporated into the perovskite film, leading to relaxed microstrain and a lower defect concentration. As a result, a PCE of 25.4% for rigid PSCs and a record PCE of 23.6% (certified 22.5%) for FPSCs have been achieved. In addition, the corresponding FPSCs exhibited excellent bending durability, maintaining ∼85% of their initial efficiency after bending at a 6 mm radius for 10 000 cycles. [Display omitted] •FPSCs hold promise as power sources for flexible electronics and spacecraft•Succinate additives enable high-quality perovskite films with reduced microstrain•An efficiency of 25.4% has been achieved for perovskite solar cells•An efficiency of 23.6% has been achieved for FPSCs with excellent durability