Two-In-One Method for Graphene Transfer: Simplified Fabrication Process for Organic Light-Emitting Diodes
Journal article, 2018
Graphene as one of the most promising transparent electrode materials has been successfully applied in organic light-emitting diodes (OLEDs). However, traditional poly(methyl methacrylate) (PMMA) transfer method usually results in hardly removed polymeric residues on the graphene surface, which induces unwanted leakage current, poor diode behavior, and even device failure. In this work, we proposed a facile and efficient two-in-one method to obtain clean graphene and fabricate OLEDs, in which the poly(9,9-di-n-octylfluorene-alt-(1,4-phenylene-(4-sec-butylphenyl)imino)-1,4-phenylene) (TFB) layer was inserted between the graphene and PMMA film both as a protector during the graphene transfer and a hole-injection layer in OLEDs. Finally, green OLED devices were successfully fabricated on the PMMA-free graphene/TFB film, and the device luminous efficiency was increased from 64.8 to 74.5 cd/A by using the two-in-one method. Therefore, the proposed two-in-one graphene transfer method realizes a high-efficient graphene transfer and device fabrication process, which is also compatible with the roll-to-roll manufacturing. It is expected that this work can enlighten the design and fabrication of the graphene-based optoelectronic devices.
graphene
OLEDs
hole-injection layer
PMMA
F4TCNQ
transfer method
Author
Lihui Liu
Nanjing University of Posts and Telecommunications
Wenjuan Shang
Nanjing University of Posts and Telecommunications
Chao Han
Nanjing University of Posts and Telecommunications
Qing Zhang
Nanjing University of Posts and Telecommunications
Yao Yao
Nanjing University of Posts and Telecommunications
Xiaoqian Ma
Nanjing University of Posts and Telecommunications
Minghao Wang
Nanjing University of Posts and Telecommunications
Hongtao Yu
Nanjing University of Posts and Telecommunications
Yu Duan
Jilin University
Jie Sun
Beijing University of Technology
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Shufen Chen
Nanjing University of Posts and Telecommunications
Wei Huang
Northwestern Polytechnical University
Nanjing University of Posts and Telecommunications
ACS Applied Materials & Interfaces
1944-8244 (ISSN) 1944-8252 (eISSN)
Vol. 10 8 7289-7295Subject Categories
Textile, Rubber and Polymeric Materials
Other Chemistry Topics
Condensed Matter Physics
DOI
10.1021/acsami.7b19039