Department of Advanced Technology Fusion Konkuk University 143-701 Seoul South Korea;
Analysis Research Division Daegu Center Korea Basic Science Institute 702-701 Daegu South Korea;
Division of Chemical Engineering Konkuk University 05029 Seoul South Korea;
Division of Chemical Engineering Konkuk University 05029 Seoul South Korea;
Department of Chemistry Konkuk University 143-701 Seoul South KoreaDepartment of Advanced Technology Fusion Konkuk University 143-701 Seoul South Korea;
Acetamidinium bromide; Planar perovskite solar cell; Tensile stress; Interface passivation; Recombination barrier;