Rapid progress has recently been made in the development of perovskite solar cells (PSCs) with power conversion efficiencies (PCEs) that are now comparable with those of crystalline Si, the traditional and well-established solar cell technology. Recently in Science, Fang and co-workers reported a PSC in an inverted configuration with a high efficiency of >24% (23.5% certified) and remarkable operational stability. In this work, robust heterojunctions were constructed at the interface to suppress ion migration and favorably adjust the interfacial energy band alignment, addressing two major issues associated with the poor PCEs and stability of inverted PSCs.

最近，钙钛矿太阳能电池 (PSC) 的开发取得了快速进展，其功率转换效率 (PCE) 现在可与传统且成熟的太阳能电池技术晶体硅相媲美。最近在《科学》杂志上，Fang 和他的同事报告了一种倒置配置的 PSC，具有 >24% 的高效率（23.5% 认证）和卓越的运行稳定性。在这项工作中，在界面处构建了坚固的异质结以抑制离子迁移并有利地调整界面能带排列，解决了与差的 PCE 和倒置 PSC 的稳定性相关的两个主要问题。