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Rapid Crystallization in Ambient Air for Planar Heterojunction Perovskite Solar Cells
신광수,최원규,나성재,류상욱,문태호 대한금속·재료학회 2017 ELECTRONIC MATERIALS LETTERS Vol.13 No.1
Organic-inorganic hybrid perovskite solar cells have attracted greatinterest because of rapid improvement of power-conversion efficiencyand strong potential for low fabrication cost. The development ofcost-effective routes producing high quality perovskite films hasbeen continuously demanded. Here, it is shown that crystallineperovskite films with completely coated morphology can be formedusing the precursors of MACl and PbI2 without post-annealing underatmosphere. The dense perovskite films composed of the closelypacked islands are observed with the smooth surface. The planar cellswith p-i-n heterojunction geometry are successfully demonstrated usingPEDOT:PSS and PCBM. Significantly, the outstanding electricalproperties are observed, which demonstrates the good coverage andcrystallinity of the perovskite layers.