Efficiency-enhancement of lead-free ASnI2Br perovskite solar cells by phenyltrihydrosilane passivation effective for Sn4+ reduction and hydrophobization

Sota Kikuchi, Takayuki Okamoto, Mengmeng Chen, Shen Qing, Shuzi Hayase,

Next Materials, Volume 3, 2024, 100098, ISSN 2949-8228,

https://doi.org/10.1016/j.nxmate.2023.100098.

The paper presents a study on improving the efficiency of lead-free ASnI2Br perovskite solar cells using phenyltrihydrosilane (PhSiH3) passivation. This passivation effectively reduces Sn4+ and creates a hydrophobic surface, enhancing the solar cells' efficiency from 3.65% to 5.50%. The process involves passivating the film surface with PhSiH3 solution, which decreases Sn4+ concentration on the perovskite film surface and makes the surface hydrophobic, resulting in better contacts with the C60 layer. The study demonstrates the effectiveness of PhSiH3 treatment in enhancing solar cell performance.

How Paios was used

Paios was utilized specifically for impedance measurement and analysis. This all-in-one characterization tool helped the researchers in assessing the electrical properties of the perovskite solar cells, which is crucial for understanding and enhancing their performance​.