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Kim, Jin Young
Next Generation Energy Lab.
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Capillary printing of highly aligned silver nanowire transparent electrodes for high-performance optoelectronic devices

Author(s)
Kang, SaewonKim, TaehyoCho, SeungseLee, YoungohChoe, AyoungWalker, BrightKo, Seo-JinKim, Jin YoungKo, Hyunhyub
Issued Date
2015-11
DOI
10.1021/acs.nanolett.5b03019
URI
https://scholarworks.unist.ac.kr/handle/201301/18000
Fulltext
http://pubs.acs.org/doi/10.1021/acs.nanolett.5b03019
Citation
NANO LETTERS, v.15, no.12, pp.7933 - 7942
Abstract
Percolation networks of silver nanowires (AgNWs) are commonly used as transparent conductive electrodes (TCEs) for a variety of optoelectronic applications, but there have been no attempts to precisely control the percolation networks of AgNWs that critically affect the performances of TCEs. Here, we introduce a capillary printing technique to precisely control the NW alignment and the percolation behavior of AgNW networks. Notably, partially aligned AgNW networks exhibit a greatly lower percolation threshold, which leads to the substantial improvement of optical transmittance (96.7%) at a similar sheet resistance (19.5 Omega sq(-1)) as compared to random AgNW networks (92.9%, 20 Omega sq(-1)). Polymer light-emitting diodes (PLEDs) using aligned AgNW electrodes show a 30% enhanced maximum luminance (33068 cd m(-2)) compared to that with random AgNWs and a high luminance efficiency (14.25 cd A(-1)), which is the highest value reported so far using indium-free transparent electrodes for fluorescent PLEDs. In addition, polymer solar cells (PSCs) using aligned AgNW electrodes exhibit a power conversion efficiency (PCE) of 8.57%, the highest value ever reported to date for PSCs using AgNW electrodes.
Publisher
AMER CHEMICAL SOC
ISSN
1530-6984
Keyword (Author)
Aligned silver nanowirecapillary printingorganic solar cellspolymer light emitting diodetransparent electrodes
Keyword
LIGHT-EMITTING-DIODESPOLYMER COMPOSITE ELECTRODEORGANIC SOLAR-CELLSCARBON NANOTUBE FILMSTHIN-FILMSPRAY DEPOSITIONLARGE-SCALENETWORKSPERCOLATIONOXIDE

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