title: Highly conductive and dispersible graphene and its application in P3HT-based solar cells.
abstract: A simple reduction method without the need for high-temperature annealing is proposed for highly conductive and dispersible graphene sheets. This method consists of the grafting of graphene oxide (GO) with 1-pyrenecarboxylic acid (PCA) and the exothermic reduction of the PCA-grafted GO, followed by an endothermic decarboxylation with refluxing hot water. The PCA-grafted reduced graphene oxide (PCA-rGO) has a high conductivity of ~1.52 × 10(5) S m(-1). Upon incorporating the rGO-PCA in active and electron transport layers of organic solar cells, compared to P3HT-only devices (0.18%) a 16-fold increase in the power conversion efficiency (2.85%) is obtained, attributed to a substantial increase in the short-circuit current density from 0.017 to 12.09 mA cm(-2).
authors: School of Semiconductor and Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea. ybhahn@chonbuk.ac.kr.
authors: Tahmineh
authors: T
authors: Mahmoudi
authors: Won-Yeop
authors: WY
authors: Rho
authors: Hwa-Young
authors: HY
authors: Yang
authors: S Ravi P
authors: SR
authors: Silva
authors: Yoon-Bong
authors: YB
authors: Hahn