| 초록 |
We demonstrate that an easily accessible polyacrylonitrile (PAN) polymer can efficiently function as a novel solution-processable anode interfacial layer (AIL) to boost the device-performances of organic solar cells (OSCs). The PAN thin film was simply prepared with spin-coating of a cost-efficient PAN solution dissolved in dimethylformamide on indium tin oxide (ITO), and the thin polymeric interlayer on OSC-parameters and -stability were systemically investigated. As a result, the cell-efficiency of the OSC with PAN was remarkably enhanced compared to the device using the bare ITO. Furthermore, with the PAN, we finally achieved an excellent power conversion efficiency (PCE) of 6.7% and a very high OSC stability, which constitute a highly comparable PCE and superior device life-time to conventional OSCs with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). |
