期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 8, 期 43, 页码 15086-15091出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0tc03309j
关键词
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资金
- U.S. Department of Commerce, National Institute of Standards and Technology as part of the Center for Hierarchical Materials Design (CHiMaD) [70NANB19H005]
- National Science Foundation Scalable Nanomanufacturing Program (NSF) [CMMI-1727846]
- National Science Foundation (NSF) Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF) [ECCS-1542205]
- Materials Research Science and Engineering Center (MRSEC) (NSF) [DMR-1720139]
- State of Illinois
- Northwestern University
- NSF MRSEC Program [NSF DMR-1720139]
Solution-processed graphene inks that use ethyl cellulose as a polymer stabilizer are blade-coated into large-area thin films. Following blade-coating, the graphene thin films are cured to pyrolyze the cellulosic polymer, leaving behind an sp(2)-rich amorphous carbon residue that serves as a binder in addition to facilitating charge transport between graphene flakes. Systematic charge transport measurements, including temperature-dependent Hall effect and non-contact microwave resonant cavity characterization, reveal that the resulting electrically percolating graphene thin films possess high mobility (approximate to 160 cm(2) V-1 s(-1)), low energy gap, and thermally activated charge transport, which develop weak localization behavior at cryogenic temperatures.
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