Effect of Nitrogen Impurity on Electronic Properties of Boron Nanotubes

Table 1

Comparison of electronic properties of various nanotubes.

Nanotubes	CNT^a	BNNT	SiCNT^b	BNT^c	One N-doped BNT^d	Two N-doped BNT^d
Armchair (3, 3)	Metallic	Semiconducting (6.06 eV)^e	Semiconducting (2.13 eV)	Metallic	Metallic	Metallic
Zigzag (5, 0)	Metallic	Semiconducting (2.1 eV)^f	Semiconducting (0.19 eV)	Metallic	Semiconducting (1.11 eV)	Semiconducting (1.19 eV)
Chiral (4, 2)	Semiconducting (0.26 eV)	Semiconducting (3.23 eV)^f	Semiconducting (0.75 eV)	Semiconducting (0.43 eV)	Semimetallic (0.16 eV)	Semimetallic (0.0 eV)

aReference [39].
^bReference [40].
^cReference [20].
^dPresent Study.
^eReference [41].
^fReference [42].