Lead halide based perovskites are the most promising materials for solar cell devices. These organic-inorganic hybrid materials have wide and strong light absorption capability and relatively long electron-hole transport length, making the efficiency of solar cell to about 15%.  In our research, nanoscaled perovskites were prepared by an easily handled solution method. Alkyl ammonium was employed as capping agent to modify the size and morphology of the materials. Changing the precursor composition could control the perovskite component, including the halide anions and organic cations, which affect the light absorption range and the electron-hole transport length. These materials were used in the heterojunction solar cells with enlarged interface compared to the planar solar cells, which was beneficial for the carrier separation but also increased the chance of recombination. A series of experiments were used to determine the structure and component of the active layers.

Low dimensional organometal perovskites for photovoltaic solar cells

248th National Meeting (2014)

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