Fig. 1From: Fundamental Study on the Fabrication of Inverted Planar Perovskite Solar Cells Using Two-Step Sequential Substrate Vibration-Assisted Spray Coating (2S-SVASC)Schematic illustration of a adopted device architecture in this work (invertedĀ planar heterojunction perovskite solar cell) and b the experimental procedure for the fabrication of perovskite layer using the 2S-SVASC method. In part (b), PbCl2 solution is sprayed first and then the MAI solution is sprayed atop the PbCl2 layer, using a second sprayerBack to article page