New absorbent layer through employing semi-transparent Cs0.05FA0.95PbI2.55Br0.45 in perovskite solar cells for solar windows: Balancing efficiency and transparency

• Published in: Materials letters 2024-12, Vol.377, p.137553, Article 137553
• Main Authors: Shrivastav, Nikhil, Wadhwa, Girish, Mani, Prashant, Madan, Jaya, Pandey, Rahul
• Format: Article
• Language: English
• Subjects: Perovskite; Power conversion efficiency; Semiconductors; Transmittance; Transparency
• ISSN: 0167-577X
• DOI: 10.1016/j.matlet.2024.137553

[Display omitted] •Optimized Cs0.05FA0.95PbI2.55Br0.45 layer for solar windows and BIPV.•Achieved 20 % PCE, 1.24 V VOC, and 80.70 % fill factor.•Increased JSC from 9.98 to 21.60 mA/cm2 with thinner absorber layers.•Balanced transparency and efficiency for building-integrated photovoltaics. Perovskite materials are gaining attention due to their superior photovoltaic performance and potential for transparent solar cell applications, such as solar windows and building-integrated systems. This study focuses on designing thinner Cs0.05FA0.95PbI2.55Br0.45 perovskite layers to balance transparency and power conversion efficiency (PCE). The solar cell performance improves with increased absorber layer thickness, resulting in a current density (JSC) rise from 9.98 to 21.60 mA/cm2. The optimized device achieves an open-circuit voltage (VOC) of 1.24 V, a fill factor (FF) of 80.70 %, and PCE of 20 %. For absorber thicknesses of 100–500 nm, the PCE ranges from 10.01 % to 19.45 %, while the average visible transmittance (AVT) decreases from 51.05 % to 2.63 %. These results provide insights into designing semi-transparent perovskite solar cells with a balance between efficiency and transparency.