A Systematic Analysis of The Current 2D Perovskite Engineering Approach and Future Prospects

Perovskite solar cells (PSCs) have become a hot topic in the photovoltaic studies. Although perovskite has excellent photoelectric properties including adjustable bandgap, high power conversion efficiency (PCE) performance, high electron transport, the three-dimensional perovskite commonly studied is often unstable, short life, and subject to environmental interference especially heat and humidity. So two-dimensional perovskites have been studied and studied. This paper introduces the 2D materials and 2D perovskite solar cells. And then several new works of surface engineering on 2D perovskite solar cells including passivation strategies, interface engineering and orientation of crystallization on perovskite films are mentioned and concluded, thereby providing a future understanding to improve and balance the efficiency and stability of 2D PSCs. Even though the existing strategies for optimizing two-dimensional perovskite are abundant and have certain rules, more essential two-dimensional perovskite properties to improve efficiency and stability need to be studied, so that two-dimensional perovskite will have more possibilities in industrial production.