Details

Autor(en) / Beteiligte

• Zhang, Cuiping
• Cai, Jingxuan
• Liang, Chuwei
• Khan, Arshad
• Li, Wen‐Di

Titel

Scalable Fabrication of Metallic Nanofiber Network via Templated Electrodeposition for Flexible Electronics

Ist Teil von

• Advanced functional materials, 2019-08, Vol.29 (35), p.n/a

Ort / Verlag

Hoboken: Wiley Subscription Services, Inc

Erscheinungsjahr

2019

Quelle

Wiley Online Library All Journals

Beschreibungen/Notizen

• Metallic nanofiber networks (MNFNs) are very promising for next‐generation flexible transparent electrodes (TEs) since they can retain outstanding optical and electrical properties during bending due to their ultralong and submicron profile. However, it is still challenging to achieve cost‐effective and high‐throughput fabrication of MNFNs with reliable and consistent performance. Here, a cost‐effective method is reported to fabricate high‐performance MNFN‐TEs via templated electrodeposition and imprint transfer. The fabricated electrodeposition template has a trilayer structure of glass/indium tin oxide/SiO2 with nanotrenches in the insulating SiO2 that can be utilized for repeated electrodeposition of the MNFNs, which are then transferred to flexible substrates. The fabricated TEs exhibit excellent optical transmittance (>84%) and electrical conductivity (<0.9 Ω sq−1) and show desirable mechanical flexibility with a sheet resistance <2 Ω sq−1 under a bending radius of 3 mm. Meanwhile, the MNFN‐TEs reproduced from the reusable template show consistent and reliable performance. Additionally, this template‐based method can realize the direct patterning of MNFN‐TEs with arbitrary conductive patterns by selective masking of the template. As a demonstration, a flexible dynamic electroluminescent display is fabricated using TEs made by this method, and the light‐emitting pattern is observable from both sides. Flexible transparent electrodes containing reproducible metallic nanofiber networks with consistent and high performance are fabricated through a scalable and cost‐effective process, which features repeated cycles of electrodepositing metallic nanofibers ina reusable template and transferring them to flexible substrates. This method also enables direct patterning of transparent electrodes with circuitry, which is demonstrated through the fabrication of flexible electroluminescent displays.