| 초록 |
Modification of the surface properties of ZnO could be crucial for improvement of the device performance, especially in inverted polymer solar cells (PSCs) that employ metal oxide films for the electron transporting layer (ETL). Herein, we employed PBN as an electron-transporting layer on a ZnO layer and constructed a highly efficient, inverted structure device consisting of PTB7:PC70BM achieving a high power conversion of up to 8.6%, constituting a 21.1% improvement over the control device performance (7.1%) prepared without a PBN layer. This result was ascribed to the reduced interfacial resistance and the improved charge transport and collection through the PBN ETL. |
