At MSU obtained perovskite nanowires for solar cells
Specialists of the faculty of materials science and chemical faculty of Moscow state University named after M. V. Lomonosov together with a group of scientists led by Michaeleen Grettselem (EPFL, Switzerland), was able to understand the formation mechanism of organic-inorganic perovskites in the form of nanowires.
Nanowires have attracted researchers amazing performance, in particular, are promising for applications in solar cells. Joint Russian-Swiss project in the field of perovskite photovoltaics was launched this year.
Perovskite solar cells based on organic-inorganic materials with the perovskite structure represent a new class of photovoltaic devices. The first prototype of a cell was established in 2009, and to date its effectiveness has been increased several times, to 22%. Simple and economical fabrication of such cells allows us to hope that they will compete with silicon counterparts in the near future.
Scientists proposed a new method to obtain perovskite with filamentous morphology by a number of topologicheskikh transformations. The researchers were able for the first time to experimentally trace the formation and subsequent decomposition of the intermediate «white» phase, called the adduct is formed in the form of long nanowires, which upon further heating transforms into the perovskite inheriting filamentous morphology. Using sequential ion exchange of scientists of Moscow state University was obtained nanowires of perovskite crystals with different cation and anion composition.
Source: Moscow state University named after M. V. Lomonosov