AI Article Synopsis
- The buried interface between SnO and the perovskite layer in perovskite solar cells (PSCs) is enhanced by two-dimensional MBene, boosting charge transfer and overall cell efficiency.
- MBene adds electrons to SnO’s surface, passivates defects, and aids in charge collection, while also regulating perovskite crystal growth and improving film quality.
- This research indicates that PSCs using MBene can achieve efficiencies up to 24.32% and enhanced stability, highlighting the potential for 2D materials in solar technology.
Article Abstract
The interface of perovskite solar cells (PSCs) plays an important role in transferring and collecting charges. Interface defects are important factors affecting the efficiency and stability of PSCs. Here, the buried interface between SnO and the perovskite layer is bridged by two-dimensional (2D) MBene, which improves charge transfer. MBene can deposit additional electrons on the surface of SnO, passivate its surface defects and facilitate the charge collection. Moreover, the dipole moment formed at the interface increases the electron transfer ability in the PSCs. MBene also regulates the growth of perovskite crystals, improves the quality of perovskite films, and reduces its grain boundary defects. As a result, PSCs based on FAMAPbI and (FAPbI)(MAPbBr) get the enhanced efficiencies of 22.34 % and 24.32 % with negligible hysteresis. Furthermore, the optimized device exhibits better stability. This work opens up the application of MBene materials in PSCs, reveals a deeper understanding of the mechanism behind using 2D materials as an interface modification layer, and shows opportunities for using MBene as potential material in photoelectric devices.
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| http://dx.doi.org/10.1002/anie.202404385 | DOI Listing |
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