| 초록 |
The potential of low-cost roll-to-roll manufacturing has made bulk-heterojunction (BHJ) polymer solar cells (PSCs) very attractive as a cost-effective and flexible power source. Recently, inverted device geometries, using high work function metals (Ag, Au) as the hole collecting anode and indium tin oxide (ITO) as the electron collecting cathode, have attracted increasing attention due to device stability and design flexibility. A conducting polymer, PEDOT:PSS, has been most commonly used as a hole transporting layer (HTL). However, PEDOT:PSS has several problems including high acidity, hygroscopic properties, and inhomogeneous electrical properties, leading to poor long-term stability. Herein, we have investigated solution-processable graphene-based films as hole transporting layer for stable and high-performance inverted PSCs. |
