Efficiency enhancement of nanorod green light emitting diodes employing silver nanowire-decorated graphene electrode as current spreading layer

Title
Efficiency enhancement of nanorod green light emitting diodes employing silver nanowire-decorated graphene electrode as current spreading layer
Authors
서태훈박아현이건희김명종서은경
Keywords
LED; silver nanowire-graphene hybrid; graphene electrode; GaN; light emitting diode; silver nanowire-decorated graphene electrode
Issue Date
2014-07
Publisher
Journal of physics D, applied physics
Citation
VOL 47, 315102-1-315102-6
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/47888
ISSN
00223727
Appears in Collections:
KIST Publication > Article
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