Nanoscale Chemical and Electrical Stabilities of Graphene-covered Silver Nanowire Networks for Transparent Conducting Electrodes
| Autor: | Sung Heo, Woon Ih Choi, Dong-Jin Yun, Seong Heon Kim, Kwang Hee Kim, Dae Jin Yang |
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| Rok vydání: | 2016 |
| Předmět: |
Auger electron spectroscopy
Multidisciplinary Materials science Gas cluster ion beam Graphene Nanowire Nanotechnology 02 engineering and technology Conductive atomic force microscopy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Article 0104 chemical sciences law.invention X-ray photoelectron spectroscopy law Sputtering Electrode 0210 nano-technology |
| Zdroj: | Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/srep33074 |
| Popis: | The hybrid structure of Ag nanowires (AgNWs) covered with graphene (Gr) shows synergetic effects on the performance of transparent conducting electrodes (TCEs). However, these effects have been mainly observed via large-scale characterization, and precise analysis at the nanoscale level remains inadequate. Here, we present the nanoscale verification and visualization of the improved chemical and electrical stabilities of Gr-covered AgNW networks using conductive atomic force microscopy (C-AFM), Auger electron spectroscopy (AES), and X-ray photoelectron spectroscopy (XPS) combined with the gas cluster ion beam (GCIB) sputtering technique. Specifically by transferring island Gr on top of the AgNW network, we were able to create samples in which both covered and uncovered AgNWs are simultaneously accessible to various surface-characterization techniques. Furthermore, our ab initio molecular dynamics (AIMD) simulation elucidated the specific mechanistic pathway and a strong propensity for AgNW sulfidation, even in the presence of ambient oxidant gases. |
| Databáze: | OpenAIRE |
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