title: Value-added Synthesis of Graphene: Recycling Industrial Carbon Waste into Electrodes for High-Performance Electronic Devices.
abstract: We have developed a simple, scalable, transfer-free, ecologically sustainable, value-added method to convert inexpensive coal tar pitch to patterned graphene films directly on device substrates. The method, which does not require an additional transfer process, enables direct growth of graphene films on device substrates in large area. To demonstrate the practical applications of the graphene films, we used the patterned graphene grown on a dielectric substrate directly as electrodes of bottom-contact pentacene field-effect transistors (max. field effect mobility ~0.36 cm(2)·V(-1)·s(-1)), without using any physical transfer process. This use of a chemical waste product as a solid carbon source instead of commonly used explosive hydrocarbon gas sources for graphene synthesis has the dual benefits of converting the waste to a valuable product, and reducing pollution.
authors.affiliation: Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.
authors.forename: Hong-Kyu
authors.initials: HK
authors.lastname: Seo
authors.affiliation: Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.
authors.forename: Tae-Sik
authors.initials: TS
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.|Center for Artificial Low Dimensional Electronic Systems (CALDES), Institute for Basic Science (IBS), Pohang, Gyungbuk 790-784, Republic of Korea.
authors.forename: Chibeom
authors.initials: C
authors.lastname: Park
authors.affiliation: Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.
authors.forename: Wentao
authors.initials: W
authors.lastname: Xu
authors.affiliation: Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.|Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, Gyungbuk 790-784, Republic of Korea.
authors.forename: Kangkyun
authors.initials: K
authors.lastname: Baek
authors.affiliation: School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Republic of Korea.
authors.forename: Sang-Hoon
authors.initials: SH
authors.lastname: Bae
authors.affiliation: School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Republic of Korea.
authors.forename: Jong-Hyun
authors.initials: JH
authors.lastname: Ahn
authors.affiliation: Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.|Center for Self-assembly and Complexity (CSC), Institute for Basic Science (IBS), Pohang, Gyungbuk 790-784, Republic of Korea.|Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.
authors.forename: Kimoon
authors.initials: K
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.|Center for Artificial Low Dimensional Electronic Systems (CALDES), Institute for Basic Science (IBS), Pohang, Gyungbuk 790-784, Republic of Korea.|Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.
authors.forename: Hee Cheul
authors.initials: HC
authors.lastname: Choi
authors.affiliation: Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.|Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 790-784, Republic of Korea.
authors.forename: Tae-Woo
authors.initials: TW
authors.lastname: Lee
mesh_terms: D003033:Coal Tar / Q000737:chemistry*; D004566:Electrodes; D006108:Graphite / Q000138:chemical synthesis / Q000737:chemistry*; D007220:Industrial Waste; D009279:Naphthacenes / Q000737:chemistry; D009532:Nickel / Q000737:chemistry; D059027:Recycling; D013059:Spectrum Analysis, Raman; D014173:Transistors, Electronic
chemical_list: D007220:Industrial Waste; D009279:Naphthacenes; D006108:Graphite; D009532:Nickel; D003033:Coal Tar; C523499:pentacene