Improving the graphene electrode performance in ultra-violet light emitting diode using silver nanowire networks

Title
Improving the graphene electrode performance in ultra-violet light emitting diode using silver nanowire networks
Authors
서태훈박아현박성찬S. Chandramohan이건희김명종홍창희서은경
Keywords
Graphene; Silver nanowiere; UVLED
Issue Date
2015-02
Publisher
Optical Materials Express
Citation
VOL 5, NO 2, 314-322
Abstract
This paper reports a systematic study on the characteristics of silver nanowires (AgNWs) coated graphene and its application as a transparent current spreading electrode in ultra-violet light emitting diodes (UV-LEDs). The optimized values of optical transmittance and sheet resistance of AgNWs covered graphene were 87.7% at 375 nm and 50 ± 5 Ω/sq, respectively. Upon applying the AgNWs on graphene electrode, the UV-LED exhibited uniform bright light emission with a reduction in the forward voltage and about four-fold increase in the electroluminescence intensity. We attribute the observed performance improvements to a reduction in the sheet and contact resistances.
URI
http://pubs.kist.re.kr/handle/201004/49327
ISSN
21593930
Appears in Collections:
KIST Publication > Article
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