Microscope image of the surface of the perovskite active layer with and without the addition of ammonium chloride

By adding ammonium chloride, the resultant perovskite film had fewer grains of a much larger size, reducing the number of grain boundaries.

By adding ammonium chloride, the resultant perovskite film had fewer grains of a much larger size, reducing the number of grain boundaries.

Date:
26 January 2020
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