期刊
NATURE COMMUNICATIONS
卷 8, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms14560
关键词
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资金
- Ministry of Science and Technology of China [2016YFA0200101]
- National Science Foundation of China [51325205, 51290273, 51521091, 11661131001, 51572265]
- Chinese Academy of Sciences [KGZD-EW-303-1, KGZD-EW-303-3, KGZD-EW-T06]
- Postdoctoral Science Foundation of China [2015M580237]
The large polymer particle residue generated during the transfer process of graphene grown by chemical vapour deposition is a critical issue that limits its use in large-area thin-film devices such as organic light-emitting diodes. The available lighting areas of the graphene-based organic light-emitting diodes reported so far are usually <1 cm(2). Here we report a transfer method using rosin as a support layer, whose weak interaction with graphene, good solubility and sufficient strength enable ultraclean and damage-free transfer. The transferred graphene has a low surface roughness with an occasional maximum residue height of about 15nm and a uniform sheet resistance of 560 Omega per square with about 1% deviation over a large area. Such clean, damage-free graphene has produced the four-inch monolithic flexible graphene-based organic light-emitting diode with a high brightness of about 10,000 cd m(-2) that can already satisfy the requirements for lighting sources and displays.
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