Absorbance Studies of Perovskite CH_3NH_3Pbl_(3-x))CI_x as Light Harvester in Solar Cell

摘要

Hybrid perovskite is one of the emerging materials which is currently being widely investigated for solar cells. Here we report the synthesis and characterization of perovskite compound which can be used as a light harvester in photovoltaic cells, which is CH_3NH_3PbI_(3-x)Cl_x. The perovskite materials were synthesized using solution-based methods. Several parameters are investigated in the synthesis of CH_3NH_3PbI_(3-x)Cl_x perovskite, which are the influence of precursor composition, synthesis temperature , precursor concentration, and the annealing temperature. These parameters are optimized against the absorbance and bandgap of the synthesized CH_3NH_3PbI_(3-x)Cl_x thin film. The optimized perovskite thin film is obtained with excellent absorption capabilities for solar cell applications.