title: Capillary Printing of Highly Aligned Silver Nanowire Transparent Electrodes for High-Performance Optoelectronic Devices.
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 Ω sq(-1)) as compared to random AgNW networks (92.9%, 20 Ω 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.
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan Metropolitan City, 689-798, Republic of Korea.
authors.forename: Saewon
authors.initials: S
authors.lastname: Kang
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan Metropolitan City, 689-798, Republic of Korea.
authors.forename: Taehyo
authors.initials: T
authors.lastname: Kim
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan Metropolitan City, 689-798, Republic of Korea.
authors.forename: Seungse
authors.initials: S
authors.lastname: Cho
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan Metropolitan City, 689-798, Republic of Korea.
authors.forename: Youngoh
authors.initials: Y
authors.lastname: Lee
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan Metropolitan City, 689-798, Republic of Korea.
authors.forename: Ayoung
authors.initials: A
authors.lastname: Choe
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan Metropolitan City, 689-798, Republic of Korea.
authors.forename: Bright
authors.initials: B
authors.lastname: Walker
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan Metropolitan City, 689-798, Republic of Korea.
authors.forename: Seo-Jin
authors.initials: SJ
authors.lastname: Ko
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan Metropolitan City, 689-798, Republic of Korea.
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Kim
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan Metropolitan City, 689-798, Republic of Korea.
authors.forename: Hyunhyub
authors.initials: H
authors.lastname: Ko
keywords: Aligned silver nanowire; capillary printing; organic solar cells; polymer light emitting diode; transparent electrodes