A highly robust and stable graphene-encapsulated Cu-grid hybrid transparent electrode demonstrating superior performance in organic solar cells. Issue 48 (28th November 2018)

• Record Type: Journal Article
• Authors: Jeong, Gyujeong; Jung, Seungon; Choi, Yunseong; Lee, Junghyun; Seo, Jihyung; Kim, Dong Suk; Park, Hyesung
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 48(2018)
• Page Start: 24805
• Page End: 24813
• Publication Date: 2018-11-28
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta09868a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Organic solar cells fabricated with Cu grid/graphene hybrid transparent electrodes exhibit both excellent device performance and long-term stability. Abstract : Copper is one of the candidate materials for alternative transparent conductive electrodes (TCEs) owing to its excellent electrical conductivity and low cost. The vulnerability of copper against oxidation, however, imposes a severe limitation on its widespread application in functional devices. In this study, we demonstrate a high-performance and robust Cu and graphene hybrid TCE, where Cu optimized in a grid structure was used as the base electrode, while graphene sheet provided additional charge collection and transport pathways as well as a protective layer against oxidation of the underlying Cu. The Cu grid/graphene hybrid TCE was demonstrated in organic solar cells (OSCs) to have a power conversion efficiency of 8.5%, which is among the best performances based on metal grid TCE-based OSCs. The resulting device exhibited excellent long-term and thermal stabilities as well. The proposed Cu grid/graphene hybrid structure is expected to find practical application in various optoelectronics devices.