| 초록 |
In this study, we successfully fabricated perovskite solar cells (PSCs) involved in a hybrid PC70BM/ZnO interlayers from methylammonium lead iodide (MAPbI3). The device with hybrid interlayers exhibited ~11% improved performance compared to the pristine device (from 12.72% to 14.17%) by significant enhancement of JSC due to the incorporation of ZnO nanoparticles in PC70BM layer which contributed to high electron mobility and cascade energy level alignment. We investigated photoluminescence (PL) intensity of the films (MAPbI3/hybrid interlayers), which corelated to charge-generation efficiency compared to the film of MAPbI3/PC70BM. As a result, since the hybrid interlayer revealed lower PL intensity than the pristine film, ZnO doping in interlayer led to better charge quenching in the device. Our results demonstrate that the hybrid interlayer through ZnO doping can be meaningful approach in contributing to efficient PSCs. |
