| 초록 |
Flexibility and stretchability of halide perovskite-based solar cell are crucial factors for improvement of real-life application for wearable device. Recently, numerous studies on poly(3,4-ethylenedioxy thiophene):polystyrene sulfonate (PEDOT:PSS) based flexible perovskite solar cells report only about the flexibility and the structure of the fabricated cells. However, we report a more mechanically stable PEDOT:PSS in strong stains. By copolymerizing the tetrafluoropropylmethacrylate (TFPMA) with PSS and then grafting poly(ethylene glycol methacrylate) (PEGMA) polymer, highly stretchable PEDOT:P(SS-co-TFPMA)-g-PEGMA (PEDOT:PTP) was produced. After stretching 300%, PEDOT:PTP show retained conductivity of ~80% whereas the conductivity of PEDOT:PSS films could not be measured after stretching 300%. In addition, the incorporated cells show improved mechanical stability retaining 92% of the initial power conversion efficiency compared with the unassisted cells. |
