| Perovskite (CH3NH3PbI3 based materials) hybrid solar cell has been one of the most promising photovoltaic device due its plenty of advantages such as low price of raw materials, easy fabricating procedure and relative high power converted efficiency (PCE) (compared to polymer solar cells) and so on. However, the still not very high efficiency of perovskite hybrid solar cells makes it at a disadvantage position in the competition with traditional silicon solar cells. Thus, to make it more competitive, efficiency enhancement comes to a vital issued need to be addressed.;There are three chapters in this thesis. In chapter 1, a general introduction of perovskite hybrid solar cells including working mechanism and development is giving.;In chapter 2, we use the electrochemical material PSBEDOT to function as the hole transfer layer to observe the high performance of perovskite devices.;In chapter 3, to improve the efficiency of perovskite hybrid solar cells, we have blended commercial available Fe3O4 nanoparticles in to the active layer of perovskite hybrid solar cells to see any performance improvement. To further enhance the device performance, some magnetic treatments have been done in the perovskite layer of the device including the involving of magnetic nanoparticles and external magnetic field. Finally, we have got a result with PCE reaching 14.40% with a dramatically enhanced short current density. |
