The growing global demand for energy makes it essential to develop alternatives to fossil fuels with the aim to solve the issue of the upcoming energy supply shortage and the effect of climate change.Renewable energies with the featuring of inexhaustible natural source are the key for the modern industry's future in which solar energy in particular is one of the most promising segments.Perovskite solar cells (PSCs), which employ ABX3 halide perovskites (where X is halogen anions, A is monovalent cation (methylammonium (MA+), formamdinium (FA+) or Cs+), and B can be Pb2+ or Sn2+) as light absorbers, have emerged as disruptive photovoltaic technology [1,2].The power conversion efficiency (PCE) of organic-inorganic hybrid PSCs has increased sharply to a current certificated value of 25.2% (https://www.nrel.gov/pv/cellefficiency.html, accessed: April 2020), surpassing most of efficient thin-film solar cells such as CdTe or Cu(In, Ga)Se2 solar cell, However, we have noticed the preference of most reports is on high-PCE in the research filed of perovskite photovoltaics.This has become a photovoltaic pandemic that continues to rage without relief.Undoubtably, a high reproducibility of fabrication of perovskite solar cells might benefit the successful commercialization of this emerging technology.