In the original published article,1 an error appeared in Eq. (1) and should correctly read as follows:

(1)

Another error appeared in the text between Eqs. (2) and (3) (Ref. 1) and should be correctly read as follows:

The errors have no effect on the rest of the article or the conclusion of the paper.

We sincerely apologize for these oversights.

1.
H.
Guo
,
J.
Gao
,
N.
Ishida
,
M.
Xu
, and
D.
Fujita
,
Appl. Phys. Lett.
104
,
031607
(
2014
).