Graphene petals as potential electrode for perovskite based solar cells.

摘要

The recent discovery of perovskites absorbers for high efficiency solar cells has sparked interest of the solar cell community. In the present study formation and growth of perovskite (both single and mixed halide) is analyzed and a procedure is developed to increase reproducibility of these layers. Graphene nano-petals are also studied as a potential electrode for perovskite solar cells, to assist in growth of better quality perovskite layers. X-ray diffraction, scanning electron microscopy and UV-vis spectroscopy are used to study the effect of different parameters on morphological features of perovskite. Different solar cell geometries are also tested, and a working geometry for single stack perovskite solar cell is proposed which uses graphene nano-petals as an electrode.