Studies on a perovskite photovoltaic device suggest that improved stability, one of the hurdles to large-scale applicability of perovskites in solar cells, can be achieved.

   Photovoltaic devices based on the inorganic–organic methylammonium lead halide perovskite absorbers (CH3NH3PbX3, X = Br, Cl, I)are attracting considerable attention. There are three main reasons why: the materials are inexpensive to produce; the fabrication methods are relatively simple; and the devices have a high power conversion efficiency. Indeed, improvements in the efficiency have been remarkable in the last 2–3 years, faster than that seen for any other photovoltaic material before. In terms of efficiency, these materials are already better than other low-cost, thin-film technologies such as amorphous silicon, dye-sensitized solar cells, and organic solar cells.

http://www.nature.com/nnano/journal/v10/n7/full/nnano.2015.139.html