| 초록 |
In organic solar cells (OSCs), interfacial properties affect device performances. For these reasons, many researchers have studied interfacial layer for high-performance and stable OSCs. PEDOT:PSS has been generally use as a hole transfer layer. But, PEDOT:PSS has high acidity, hygroscopic properties, and inhomogeneous electrical properties. It results in poor long-term stability. To solve these problems, graphene oxide (GO) was recently reported as novel alternatives to PEDOT:PSS. Chemical reduction can convert GO from an insulator to a semi-metal material, and thus, the reductant GO (r-GO) can have good electrical conducting properties. For this reason, many researchers have been focused on r-GO synthesis and its real application in devices. In this letter, Our results indicate that r-GO could be a solution-processable alternative to PEDOT:PSS as the effective hole transport layer in OSCs. |
