Recent Progress of Critical Interface Engineering for Highly Efficient and Stable Perovskite Solar Cells

TLDR

Organic–inorganic lead halide perovskite solar cells have shown remarkable power conversion efficiencies, yet their long‑term stability remains the main barrier to commercialization, making interface engineering a key strategy for improving both efficiency and durability. This review summarizes recent advances in interface engineering across PSC interfaces and analyzes the underlying theory and multifaceted roles of such engineering for device optimization. The authors discuss deposition strategies for interlayers, the use of first‑principle calculations, and address challenges and solutions to achieve high‑efficiency, stable perovskite solar cells.

Abstract

Abstract Organic–inorganic lead halide perovskite solar cells (PSCs) have demonstrated enormous potential as a new generation of solar‐based renewable energy. Although their power conversion efficiency (PCE) has been boosted to a spectacular record value, the long‐term stability of efficient PSCs is still the dominating concern that hinders their commercialization. Notably, interface engineering has been identified as a valid strategy with extraordinary achievements for enhancing both efficiency and stability of PSCs. Herein, the latest research advances of interface engineering for various interfaces are summarized, and the basic theory and multifaceted roles of interface engineering for optimizing device properties are analyzed. As a highlight, the authors provide their insights on the deposition strategy of interlayers, application of first‐principle calculation, and challenges and solutions of interface engineering for PSCs with high efficiency and stability toward future commercialization.