A simple PAN-based fabrication method for microstructured carbon electrodes for organic field-effect transistors

Title
A simple PAN-based fabrication method for microstructured carbon electrodes for organic field-effect transistors
Authors
정찬희김완중황인태김동윤김동유이재석구본철최재학
Keywords
PAN; Graphene; FET
Issue Date
2015-06
Publisher
Carbon
Citation
VOL 87, 257-268
Abstract
Facile and efficient fabrication of polyacrylonitrile (PAN)-based conductive graphitic carbon microstructures (GCMs) and their application to the electrodes of organic field-effect transistors (OFETs) is described. The PAN thin films spin-coated on a SiO2-deposited Si wafer was irradiated through a pattern mask with 150 keV H+ ions at various fluences, and subsequently developed to form PAN microstructures. The resulting PAN microstructures were carbonized at various temperatures to create the GCMs. The analytical results revealed that the optimized fluence and carbonization temperature for well-defined GCMs was 3 × 1015 ions cm−2 and 100 °C, respectively, and that the resulting GCMs created at the optimized condition exhibited a greatly low surface roughness of 0.36 nm, a good electrical conductivity of about 600 S cm−1, and a high work function of 5.11 eV. Noticeably, the GCM electrodes-based p-type OFET showed a comparable performance to that of the gold electrode-based one, demonstrating that the practical use of GCMs as cheap electrodes to replace expensive metallic ones for organic electronic devices.
URI
http://pubs.kist.re.kr/handle/201004/49441
ISSN
00086223
Appears in Collections:
KIST Publication > Article
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