| abstract |
The invention discloses a perovskite solar cell based on CH 3 NH 3 PbI 2+x Cl 1-x photoactive layer and a preparation method, which mainly solves the problem of poor film formation, low flatness and visible light absorption rate of existing photoactive layer materials The problem. It includes from bottom to top: substrate (1), cathode (2), electron transport layer (3), photoactive layer (4), hole transport layer (5), anode (6), wherein the photoactive layer ( 4) Using CH 3 NH 3 PbI 2+x Cl 1-x , the photoactive layer is soaked in 20mg/ml CH 3 NH 3 I solution by using spin-coating PbI 2 and PbI 1+x Cl 1-x solution Formation, the invention can reduce the carrier recombination at the interface between the photoactive layer and the electron transport layer, effectively improve the performance of the planar structure perovskite solar cell, and can be used for photoelectric conversion. |