Abstract
The hybrid organic–inorganic halide perovskite solar cells (PSCs) have attracted considerable attention in the photovoltaic community during the last decade due to unique properties, such as high absorption coefficient, solutionable fabrication, and compatibility with roll-to-roll technology. A certified power conversion efficiency of PSCs as high as 25.2% has been obtained, approaching the levels of silicon solar cells, copper indium gallium selenide (CIGS), and cadmium telluride (CdTe) thin-film solar cells. However, the device area of a PSC is one of the biggest challenges for the commercialize applications. To fabricate large-area PSCs, various fabrication methods have been proposed, including spray coating, slot-die coating, vacuum deposition, and blade coating. Here, the blade-coating technique progress for the PSC fabrication has been reviewed. Moreover, the optimized ways during the solution fabrication process, the efficient strategy for improving the perovskite films' morphology, have also been summarized in this work. In the last part, the challenges and opportunities of PSC commercialization have also been proposed.
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