Facile tuning of PbI2 porosity via additive engineering for humid air processable perovskite solar cells

Fabrication of perovskite solar cells (PSC) in ambient environment or high relative humidity (RH) condition may assist in reducing the production cost and simplifying the fabrication process. However, processing PSC in high-humidity faces major challenges related to degradation of perovskite material and formation of low-quality film. To this end, we focus on improving the perovskite film quality by introducing 4-tert-butylpyridine (TBP) as...