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Ion migration has recently been suggested to play critical roles in the operation of lead halide perovskite solar cells. However, so far there has been no systematic investigation of how the monovalent cation affects the vacancy formation, ion migration and the associated hysteresis effect. Here, we present density functional theory calculations on all possible ion migration barriers in the perovskite...
A small organic sensitizer, the polyene-diphenylaniline dye D5, was compared with the standard sensitizer N719 (Ru(dcbpy) 2 (NCS) 2 ) in a dye-sensitized solar cell investigation. In solar cells with relatively thin layers of mesoporous TiO 2 (<3 μm) D5 outperformed N719 because of its high extinction coefficient. D5 showed also better performance than N719 in the case of...
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