| 초록 |
Super-flexible bis(trifluoromethanesulfonyl)-amide (TFSA)-doped graphene transparent conducting electrode (GR TCE)-based FAPbI3-xBrx perovskite solar cells with 18.9% power conversion efficiency (PCE) for a rigid device and 18.3% for a flexible one is demonstrated because the TFSA-doped GR TCE reveals high conductivity and high transmittance. The unencapsulated TFSA-doped GR TCE-based cell maintained ~95% of its initial PCE under a continuous light soaking of 1 Sun at 60 °C/30% relative humidity for 1000 h. Furthermore, the TFSA-doped GR TCE-based flexible perovskite solar cells show brilliant bending stabilities, sustaining PCEs of ~85, ~75, and ~35% of their original values after 5000 bending cycles, at R=12, 8, and 4mm, respectively. |
