Tailored field-emission property of patterned carbon nitride nanotubes by a selective doping of substitutional N(sN) and pyridine-like N(pN) atoms
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It is determined by first-principle calculations and experiments that the threshold field to achieve 1 mA/cm2 emission current density is reduced from 4.8 to 2.3 V/μm by changing pyridine-like nitrogen doping into substitutional nitrogen doping in carbon nanotubes.