Single layer graphene electrodes for quantum dot-light emitting diodes. (9th March 2015)

• Record Type: Journal Article
• Authors: Yan, Long; Zhang, Yu; Zhang, Xiaoyu; Zhao, Jia; Wang, Yu; Zhang, Tieqiang; Jiang, Yongheng; Gao, Wenzhu; Yin, Jingzhi; Zhao, Jun; Yu, William W
• Is Part Of: Nanotechnology. Volume 26:Number 13(2015)
• Publication Date: 2015-03-09
• Subjects: graphene electrode -- ITO -- CdSe/CdS/ZnS -- quantum dots -- light emitting diodes; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/0957-4484/26/13/135201
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Single layer graphene was employed as the electrode in quantum dot-light emitting diodes (QD-LEDs) to replace indium tin oxide (ITO). The graphene layer demonstrated low surface roughness, good hole injection ability, and proper work function matching with the poly (3, 4-ethylenedioxythiophene):poly (styrenesulfonate) layer. Together with the hole transport layer and electron transport layer, the fabricated QD-LED showed good current efficiency and power efficiency, which were even higher than an ITO-based similar device under low current density. The result indicates that graphene can be used as anodes to replace ITO in QD-LEDs.