The Synthesis Of Some Intermediats For HTM

Perovskite solar cells which are based on organometal halides represent an emerging photovoltaic technology.The photovoltaic technology of perovskite solar cells stem from dye-sensitized solar cells. Recently perovskite solar cells have attracted more and more attentions from all around world.Much of the high efficiency solar cells have focussed on CH3NH3 Pb I3 as the light absorber. Although this composition currently yields the most efficient solar cells, newer perovskite compositions which have tuneable bandgaps would be of interest to tandem solar cell. Looking for new compositions of perovskite is very important. At the same time,The hole transporting material( HTM) plays a very important role in the photo-voltaic technology of perovskite solar cells.The hole transporting material of choice for perovskite solar cells is spiro-o Me TAD, which has been well studied due to its popularity in solid-state DSCs. However, the high commercial prices of spiro-o Me TAD( due to synthesis complexity) as well as its tendency to be uncontrollably doped by O2, necessitate the development of other alternatives. The wide variety of hole transporting organic layers originally developed for organic thin film transistors as well as light emitting devices could possibly be applied in the conjuction with the perovskite system.In this paper,we have synthesized spirobifluorene and its derivative for synthesis of new hole transporting materias by using some materials which are at low price and ease to get. We synthesized these compounds by two kinds of methods which are both of low price.