Thickness Uniformity Dependence on Polymer Viscosity in Silver-Nanowire-Embedded Flexible and Transparent Electrodes
| Autor: | Hyeon-Ju Oh, Dongwook Ko, Jong Bok Kim, Sung Jin Jo, Yoohan Ma, Moonsoo Chae, Dong Choon Hyun |
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| Rok vydání: | 2020 |
| Předmět: |
flexible electrode
Materials science Organic solar cell 02 engineering and technology engineering.material 010402 general chemistry lcsh:Technology 01 natural sciences thickness uniformity lcsh:Chemistry embedding Viscosity Coating Transmittance General Materials Science Composite material lcsh:QH301-705.5 Instrumentation Prepolymer Fluid Flow and Transfer Processes chemistry.chemical_classification Spin coating lcsh:T Process Chemistry and Technology silver nanowire General Engineering Polymer 021001 nanoscience & nanotechnology lcsh:QC1-999 0104 chemical sciences Computer Science Applications lcsh:Biology (General) lcsh:QD1-999 polymer viscosity chemistry lcsh:TA1-2040 Electrode engineering lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:Physics |
| Zdroj: | Applied Sciences Volume 10 Issue 7 Applied Sciences, Vol 10, Iss 7, p 2202 (2020) |
| ISSN: | 2076-3417 |
| Popis: | We herein report the effect of the viscosity of a prepolymer solution on the thickness uniformity of silver-nanowire-embedded flexible transparent electrodes. We adopted a model system with all the prepolymer solutions possessing identical physical properties except for the viscosity and then explored the most common prepolymer solutions for silver-nanowire-embedded flexible electrodes. In all experiments, single-step spin coating was conducted to coat the prepolymer solution on silver nanowires. We found that the electrodes were thinner for lower viscosity. However, the thickness ratio between the center and edge was comparable (50&ndash 60%) and independent of the prepolymer solution viscosity. This indicates that the viscosity does not determine the thickness uniformity, and that the coating method itself is vital to obtain films with uniform thickness. The flexible electrodes were introduced into organic solar cells. Their device performance was comparable regardless of the position of the electrodes and their thickness. This is because the thickness difference of the flexible electrodes did not affect their transmittance significantly. Thus, we conclude that although different coating approaches are needed to obtain flexible electrodes with high uniformity, the performance of optoelectronic devices on silver-nanowire-embedded flexible electrodes is independent of them. |
| Databáze: | OpenAIRE |
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