| 초록 |
Bulkheterojunction organic solar cells (OSCs) have attracted attention because of low cost manufacturing process, promising transparency, and capability for application in lightweight devices. In order to improve the power conversion efficiencty (PCE) of OSCs, new conjugated polymers have been synthesized as the electron donor or accpetor. Furthermore, introducing interlayers between electrode and active layer can improve the PCE. In this work, we design and synthesize several cathode buffer layer (CBL) materials which have multiple hydroxyl groups on their carbon backbone and introduce between ZnO layer and active layer. These CBL materials enhance interfacial properties since induce the favorable interface dipole from hydroxyl group. Herein we show the effect of interfacial process with hydroxyl groups on photovoltaic performances. |
