Impact of grain boundaries on efficiency and stability of organic-inorganic trihalide perovskites
Impact of grain boundaries on efficiency and stability of organic-inorganic trihalide perovskites
Organic-inorganic perovskite solar cells have attracted tremendous attention because of their remarkably high power conversion efficiencies (PCEs). To further improve the device performance, however, it is imperative to obtain fundamental understandings on the photo-response and long-term stability down to the microscopic level. Here, we report the first quantitative nanoscale photoconductivity …