Three-dimensional (3D) perovskite solar cells (PSC) reached power conversion efficiencies While thermal and moisture degradation can be minimized using encapsulation, additives or moisture-and oxygen-free fabrication environments, further degradation mechanisms have been reported. These include halide segregation, UV-light induced degradation, ionic movements, decomposition of complex inorganic-organic structures and problems induced by electrical stress. For commercialization of PSCs to be realized, research focus should not be limited to maximizing the efficiency on a smaller laboratory scale, but should be expanded to routinely include inexpensive materials that are deposited with industry-compatible production methods. Typically, most electron and hole accepting layers, along with the perovskite layer itself, are deposited by spin coating, which is not suitable for large-scale or high-throughput applications. To overcome this hurdle, a number of deposition techniques have been employed