Indexed by:Journal paper First Author:Shaohang Wu, Rui Chen, Shasha Zhang Correspondence Author:Wei Chen Co-author: B Hari Babu, Youfeng Yue, Hongmei Zhu, Zhichun Yang, Chuanliang Chen, Weitao Chen, Yuqian Huang, Shaoying Fang, Tianlun Liu, Liyuan Han, Wei Chen Journal:Nature Communications Included Journals:SCI Discipline:Engineering Document Type:J Volume:10 Issue:1 Page Number:1161 Date of Publication:2019-06-12 Abstract:Long-term stability remains a key issue impeding the commercialization of halide perovskite solar cells (HPVKSCs). The diffusion of molecules and ions causes irreversible degradation to photovoltaic device performance. Here, we demonstrate a facile strategy for producing highly stable HPVKSCs by using a thin but compact semimetal Bismuth interlayer. The Bismuth film acts as a robust permeation barrier that both insulates the perovskite from intrusion by undesirable external moisture and protects the metal electrode from iodine corrosion. The Bismuth-interlayer-based devices exhibit greatly imp Links to published journals:https://www.nature.com/articles/s41467-019-09167-0