Enhanced charge copyright transport and defects mitigation of passivation layer for efficient perovskite solar cells

Enhanced charge copyright transport and defects mitigation of passivation layer for efficient perovskite solar cells

Blog Article

Abstract Surface passivation has been developed as an effective strategy to reduce trap-state density and suppress non-radiation recombination process in perovskite solar cells.However, passivation agents usually own poor conductivity and hold negative impact on the charge copyright transport in nordic forge rounding hammer device.Here, we report a binary and synergistical post-treatment method by blending 4-tert-butyl-benzylammonium iodide with phenylpropylammonium iodide and spin-coating on perovskite surface to form passivation layer.

The binary and synergistical post-treated films show enhanced crystallinity and improved molecular packing as well as better energy band alignment, benefiting for the hole extraction and transfer.Moreover, the surface defects are further passivated compared with unary passivation.Based on the strategy, a record-certified quasi-steady power conversion efficiency of keychron m4 26.

0% perovskite solar cells is achieved.The devices could maintain 81% of initial efficiency after 450 h maximum power point tracking.