The effect of strontium doping on the performance of organic-inorganic lead based perovskite solar cell

In recent years, perovskite solar cells which includes a hybrid organic-inorganic lead basedperovskite structured compound as active layer are the subject of many researches [1]. The leadtoxicity is a key problem for commercialization of perovskite solar cells. In this regard,researchers focused on the reduction of lead levels and the doping of other metals such as Sn, In,Bi, Al, Ge [2]. In this study, the strontium was doped into methylammonium lead iodide(containing 95% lead and 5% of strontium, MAPbSrI3) and used as active layer in perovskitesolar cell. The cell structure was illustrated schematically in below. The TiO2 blocking layer, TiO2 meso porous layer and MASrPbI3 perovskite layer were depositedvia spin coating method. The Al cathode was deposited by physical vapour deposition (PVD)technique. The photovoltaic parameters were obtained from the I-V curve under illuminationusing solar simulator (AM 1.5). The results show that the MASrPbI3 perovskite with 5%strontium has good performance in compare with MAPbI3.

کلیدواژه ها:

Perovskite solar cell ، Strontium ، Lead