We studied GaN-based optoelectronic devices such as light-emitting diodes (LEDs) and solar cells (SCs) with graphene electrodes. A decoration of Au nanoparticles (NPs) on multi-layer graphene films improved the electrical conductivity and modified the work function of the graphene films. The Au NP-decorated graphene film enhanced the current injection and electroluminescence of GaN-based LEDs through low contact resistance and improved the power conversion efficiency of GaN-based SCs through additional light absorption and energy band alignment. Our study will enhance the understanding of the role of Au NP-decorated graphene electrodes for GaN-based optoelectronic device applications.
REFERENCES
1.
X.
Wan
, G.
Long
, L.
Huang
, and Y.
Chen
, Adv. Mater.
23
, 5342
(2011
).2.
C.
Biswas
and Y. H.
Lee
, Adv. Funct. Mater.
21
, 3806
(2011
).3.
Y.
Gao
, H.-L.
Yip
, K.-S.
Chen
, K. M.
O’Malley
, O.
Acton
, Y.
Sun
, G.
Ting
, H.
Chen
, and A. K. Y.
Jen
, Adv. Mater.
23
, 1903
(2011
).4.
A.
Kumar
and C.
Zhou
, ACS Nano
4
, 11
(2010
).5.
X.
Li
, W.
Cai
, J.
An
, S.
Kim
, J.
Nah
, D.
Yang
, R.
Piner
, A.
Velamakanni
, I.
Jung
, E.
Tutuc
, S. K.
Banerjee
, L.
Colombo
, and R. S.
Ruoff
, Science
324
, 1312
(2009
).6.
K. S.
Kim
, Y.
Zhao
, H.
Jang
, S. Y.
Lee
, J. M.
Kim
, K. S.
Kim
, J.-H.
Ahn
, P.
Kim
, J.-Y.
Choi
, and B. H.
Hong
, Nature (London)
457
, 706
(2009
).7.
M.
Choe
, B. H.
Lee
, G.
Jo
, J.
Park
, W.
Park
, S.
Lee
, W.-K.
Hong
, M.-J.
Seong
, Y. H.
Kahng
, K.
Lee
, and T.
Lee
, Org. Electron.
11
, 1864
(2010
).8.
A.
Benayad
, H.-J.
Shin
, H. K.
Park
, S.-M.
Yoon
, K. K.
Kim
, M. H.
Jin
, H.-K.
Jeong
, J. C.
Lee
, J.-Y.
Choi
, and Y. H.
Lee
, Chem. Phys. Lett.
475
, 91
(2009
).9.
G.
Giovannetti
, P. A.
Khomyakov
, G.
Brocks
, V. M.
Karpan
, J.
van den Brink
, and P. J.
Kelly
, Phys. Rev. Lett.
101
, 026803
(2008
).10.
P. V.
Dudin
, P. R.
Unwin
, and J. V.
Macpherson
, J. Phys. Chem. C
114
, 13241
(2010
).11.
Y.
Shi
, K. K.
Kim
, A.
Reina
, M.
Hofmann
, L.-J.
Li
, and J.
Kong
, ACS Nano
4
, 2689
(2010
).12.
H.
Bai
, C.
Li
, and G.
Shi
, Adv. Mater.
23
, 1089
(2011
).13.
Z.
Liu
, L.
Liu
, H.
Li
, Q.
Dong
, S.
Yao
, A. B.
Kidd
IV, X.
Zhang
, J.
Li
, and W.
Tian
, Sol. Energy Mater. Sol Cells
97
, 28
(2012
).14.
S.
Chandramohan
, J. H.
Kang
, Y. S.
Katharria
, N.
Han
, Y. S.
Beak
, K. B.
Ko
, J. B.
Park
, H. K.
Kim
, E.-K.
Suh
, and C.-H.
Hong
, Appl. Phys. Lett.
100
, 023502
(2012
).15.
J.
Wu
, H. A.
Becerril
, Z.
Bao
, Z.
Liu
, Y.
Chen
, and P.
Peumans
, Appl. Phys. Lett.
92
, 263302
(2008
).16.
S.
Kazaoui
, N.
Minami
, R.
Jacquemin
, H.
Kataura
, and Y.
Achiba
, Phys. Rev. B
60
, 13339
(1999
).17.
B.-S.
Kong
, D.-H.
Jung
, S.-K.
Oh
, C.-S.
Han
, and H.-T.
Jung
, J. Phys. Chem. C
111
, 8377
(2007
).18.
A. M.
Rao
, P. C.
Eklund
, S.
Bandow
, A.
Thess
, and R. E.
Smalley
, Nature (London)
388
, 257
(1997
).19.
V.
Georgakilas
, D.
Gournis
, V.
Tzitzios
, L.
Pasquato
, D. M.
Guldi
, and M.
Prato
, J. Mater. Chem.
17
, 2679
(2007
).20.
21.
T.-Y.
Park
, Y.-S.
Choi
, J.-W.
Kang
, J.-H.
Jeong
, S.-J.
Park
, D. M.
Jeon
, J. W.
Kim
, and Y. C.
Kim
, Appl. Phys. Lett.
96
, 051124
(2010
).22.
J.
Dai
, Y.
Ji
, C. X.
Xu
, X. W.
Sun
, K. S.
Leck
, and Z. G.
Ju
, Appl. Phys. Lett.
99
, 063112
(2011
).23.
J.
Gunho
, C.
Minhyeok
, C.
Chu-Young
, K.
Jin Ho
, P.
Woojin
, L.
Sangchul
, H.
Woong-Ki
, K.
Tae-Wook
, P.
Seong-Ju
, H.
Byung Hee
, K.
Yung Ho
, and L.
Takhee
, Nanotechnology
21
, 175201
(2010
).24.
J. M.
Lee
, J. W.
Choung
, J.
Yi
, D. H.
Lee
, M.
Samal
, D. K.
Yi
, C.-H.
Lee
, G.-C.
Yi
, U.
Paik
, J. A.
Rogers
, and W. I.
Park
, Nano Lett.
10
, 2783
(2010
).25.
K.
Zhu
, N. R.
Neale
, A.
Miedaner
, and A. J.
Frank
, Nano Lett.
7
, 69
(2006
).26.
C.-Y.
Kuo
, M.-S.
Su
, Y.-C.
Hsu
, H.-N.
Lin
, and K.-H.
Wei
, Adv. Funct. Mater.
20
, 3555
(2010
).27.
C. J.
Brabec
, A.
Cravino
, D.
Meissner
, N. S.
Sariciftci
, T.
Fromherz
, M. T.
Rispens
, L.
Sanchez
, and J. C.
Hummelen
, Adv. Funct. Mater.
11
, 374
(2001
).28.
See supplementary material at http://dx.doi.org/10.1063/1.4737637 for cross-section TEM image.
© 2012 American Institute of Physics.
2012
American Institute of Physics
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