MXene-based novel nanocomposites doped SnO2 for boosting the performance of perovskite solar cells

• Main Authors: Alhamada T.F., Hanim M.A.A., Jung D.W., Saidur R., Nuraini A.A., Hasan W.Z.W., Tan K.H., Noh M.M., Teridi M.A.M.
• Other Authors: 57202900837
• Format: Article
• Published: Nature Research 2025

Since being first published in 2018, the use of two-dimensional MXene in solar cells has attracted significant interest. This study presents, for the first time, the synthesis of an efficient hybrid electrocatalyst in the form of a nanocomposite (MXene/CoS)-SnO2 designed to function as a high-performance electron transfer layer (ETL). The study can be divided into three distinct parts. The first part involves the synthesis of single-layer Ti3C2Tx MXene nanosheets, followed by the preparation of a CoS solution. Subsequently, in the second part, the fabrication of MXene/CoS heterostructure nanocomposites is carried out, and a comprehensive characterization is conducted to evaluate the physical, structural, and optical properties. In the third part, the attention is on the crucial characterizations of the novel nanocomposite-electron transport layer (ETL) solution, significantly contributing to the evolution of perovskite solar cells. Upon optimising the composition, an exceptional power conversion efficiency of more than 17.69% is attained from 13.81% of the control devices with fill factor (FF), short-circuit current density (Jsc), and open-circuit voltage (Voc) were 66.51%, 20.74�mA/cm2, and 1.282�V. Therefore, this PCE is 21.93% higher than the control device. The groundbreaking MXene/CoS (2�mg�mL?1) strategy reported in this research represents a promising and innovative avenue for the realization of highly efficient perovskite solar cells. ? The Author(s) 2024.