Efficiency enhancement of nanorod green light emitting diodes employing silver nanowire-decorated graphene electrode as current spreading layer
- Efficiency enhancement of nanorod green light emitting diodes employing silver nanowire-decorated graphene electrode as current spreading layer
- 서태훈; 박아현; 이건희; 김명종; 서은경
- LED; silver nanowire-graphene hybrid; graphene electrode; GaN; light emitting diode; silver nanowire-decorated graphene electrode
- Issue Date
- Journal of physics D, applied physics
- VOL 47, 315102-1-315102-6
- We report nanorod green light emitting diodes (NGR-LEDs) with a silver nanowire-decorated
graphene electrode (S-DGE) as a current spreading electrode to connect each individual
nanorod and to give improved emission efficiency. The current–voltage and
electroluminescence characteristics of NGR-LEDs with an S-DGE are enhanced remarkably
compared to NGR-LEDs with a graphene electrode. The effective current spreading in the
whole emission area after thermal annealing of the S-DGE was attributed to reduced sheet and
contact resistances caused by the p-type doping of graphene and enhanced adhesion at the
graphene–GaN and graphene–silver nanowire interfaces.
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