The authors report gallium nitride (GaN) nanoscale light emitting diodes utilizing n-GaN nanowire/p-GaN substrate homojunctions. Utilizing electric field assisted alignment, n-type gallium nitride nanowires were placed on the surface of a p-doped GaN thin film. Electroluminescence with 365nm peak wavelength and 25nm full width half maximum was observed from these p-n junctions. These nanowire/epilayer p-n junction diodes were passivated with a thin layer of SiO2 and did not exhibit any parasitic emission related to the bulk or surface defects. The present fabrication scheme, utilizing only batch fabrication techniques, yields reliable, electrically injected nanoscale ultraviolet light sources.

1.
S.
Nakamura
,
S. J.
Pearton
, and
G.
Fasol
,
The Blue Laser Diode; The Complete Story
, 1st ed. (
Springer
,
Berlin
,
2000
), p.
7
.
2.
Z.
Zhong
,
F.
Qian
,
D.
Wang
, and
C. M.
Lieber
,
Nano Lett.
3
,
343
(
2003
).
3.
Y.
Huang
,
X.
Duan
, and
C. M.
Leiber
,
Small
1
,
142
(
2005
).
4.
F.
Qian
,
S.
Gradečak
,
Y.
Li
,
C.-J.
Wen
, and
C. M.
Lieber
,
Nano Lett.
5
,
2287
(
2005
).
5.
H.-M.
Kim
,
T. W.
Kang
, and
K. S.
Chung
,
Adv. Mater. (Weinheim, Ger.)
15
,
567
(
2003
).
6.
M.
He
,
I.
Minus
,
P.
Zhou
,
S. N.
Mohammed
,
J. B.
Halpern
,
R.
Jacobs
,
W. L.
Sarney
,
L.
Salamanca-Riba
, and
R. D.
Vispute
,
Appl. Phys. Lett.
77
,
3731
(
2000
).
7.
A.
Motayed
,
A. V.
Davydov
,
M. V.
Vaudin
,
I.
Levin
,
J.
Melngailis
, and
S. N.
Mohammad
,
J. Appl. Phys.
100
,
024306
(
2006
).
8.
A.
Motayed
,
M.
He
,
A. V.
Davydov
,
J.
Melngailis
, and
S. N.
Mohammad
,
J. Appl. Phys.
100
,
114310
(
2006
).
9.
M.
Smith
,
Y. J.
Lin
,
H. X.
Jiang
, and
M. A.
Khan
,
Appl. Phys. Lett.
71
,
635
(
1997
).
10.
Me.
He
and
S. N.
Mohammad
,
J. Chem. Phys.
124
,
064714
(
2006
).
11.
Abhishek
Motayed
,
Mark
Vaudin
,
Albert V.
Davydov
,
John
Melngailis
,
Maoqi
He
, and
S. N.
Mohammad
,
Appl. Phys. Lett.
90
,
043104
(
2007
).
12.
P.
Bhattacharya
,
Semiconductor Optoelectronic Devices
, 2nd ed. (
Prentice-Hall
,
New Jersey
,
1997
), p.
215
.
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