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Top‐Down Patterning and Self‐Assembly for Regular Arrays of Semiconducting Single‐Walled Carbon Nanotubes
Author(s) -
Wu Justin,
Antaris Alexander,
Gong Ming,
Dai Hongjie
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201401108
Subject(s) - materials science , carbon nanotube , nanotechnology , homogeneity (statistics) , self assembly , field effect transistor , optoelectronics , transistor , statistics , physics , mathematics , quantum mechanics , voltage
Highly pure semiconducting single‐walled carbon nanotubes (SWNTs) , sorted by density‐gradient ultracentrifugation, undergo self‐assembly using depletion attraction forces into rafts along lithographically defined patterns of narrow pitch (100 or 200 nm). The arrays demonstrate high pattern fidelity and channel filling, along with large‐scale homogeneity. Field‐effect transistors made from these arrays exhibit high performance at on/off ratios > 1000.