Shear-coating을 사용한 은 나노와이어 투명 전극 제조 및 특성 분석
Preparation and characterization of silver nanowire transparent electrodes using shear-coating
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Indium tin oxide (ITO) used a transparent electrode of a photoelectric device has a low sheet resistance and a high transmittance. However, ITO is disadvantageous in that the process cost is expensive, and the process time is long. Silver nanowires (AgNWs) transparent electrodes are based on a low cost solution process. In addition, it has attracted attention as a next-generation transparent electrode material that replaces ITO because it has similar electrical and optical characteristic to ITO, it is noted as a. AgNW thin films are mainly produced by spin-coating. However, the spin-coating process has a disadvantage of high material loss. In this study, the material loss was reduced by using about 2~10 ㎕ of AgNW solution on a (25 × 25) mm2 substrate using the shear-coating method. It was also possible to align AgNWs in the drag direction by dragging the meniscus of the solution. The electro-optical properties of the AgNW thin film were adjusted by changing the experimental parameters that the amount of AgNWs suspension, the gap between the substrate and the blade, and the coating speed. As a result, AgNW thin films with a transmittance of 90.7 % at a wavelength of 550 nm and a sheet resistance of 15 Ω/□ was deposited and exhibited similar properties to similar AgNW transparent electrodes studied by other researchers.
Abstract
Indium tin oxide (ITO) used a transparent electrode of a photoelectric device has a low sheet resistance and a high transmittance. However, ITO is disadvantageous in that the process cost is expensive, and the process time is long. Silver nanowires (AgNWs) transparent electrodes are based on a low cost solution process. In addition, it has attracted attention as a next-generation transparent electrode material that replaces ITO because it has similar electrical and optical characteristic to ITO, it is noted as a. AgNW thin films are mainly produced by spin-coating. However, the spin-coating process has a disadvantage of high material loss. In this study, the material loss was reduced by using about 2~10 ㎕ of AgNW solution on a (25 × 25) mm2 substrate using the shear-coating method. It was also possible to align AgNWs in the drag direction by dragging the meniscus of the solution. The electro-optical properties of the AgNW thin film were adjusted by changing the experimental parameters that the amount of AgNWs suspension, the gap between the substrate and the blade, and the coating speed. As a result, AgNW thin films with a transmittance of 90.7 % at a wavelength of 550 nm and a sheet resistance of 15 Ω/□ was deposited and exhibited similar properties to similar AgNW transparent electrodes studied by other researchers.
참고문헌 (32)
- S. Bae, "Roll-to-roll production of 30-inch graphene films for transparent electrodes", Nat. Nanotechnol, 5, pp.574~578 (2010)
- H. Wu, "A transparent electrode based on a metal nanotrough network", Nat. Nanotechnol, 8, pp.421~425 (2013)
- M. Kaltenbrunner, "Ultrathin and lightweight organic solar cells with high flexibility", Nat. Commun, 3, pp.550~ (2012)
- H. Kang, "Polymer-metal hybrid transparent electrodes for flexible electronics", Nat. Commun, 6, pp.1~7 (2015)
- T. H. Han, "Extremely efficient flexible organic light-emitting diodes with modified graphene anode", Nat. Photonics, 6, pp.105~110 (2012)
- N. Li, "Efficient and bright organic light-emitting diodes on single-layer graphene electrodes", Nat. Commun, 4, pp.1~7 (2013)
- S. Lee, "Electrodeposited Silver Nanowire Transparent Conducting Electrodes for Thin-Film Solar Cells", ACS Appl. Mater. Interfaces, 12, pp.6169~6175 (2020)
- S. Lee, "Fabrication of robust nanoscale contact between a silver nanowire electrode and cds buffer layer in cu(In,ga)se2 thin-film solar cells", J. Vis. Exp., pp.2~7 (2019)
- 지한나, "구리 전기도금 방법을 이용한 은 나노와이어 투명전극의 전기전도도 향상", 한국재료학회지, 29(5), pp.311~316 (2019), 한국재료학회[DOI]
- S. Lee, "Robust nanoscale contact of silver nanowire electrodes to semiconductors to achieve high performance chalcogenide thin film solar cells", Nano Energy, 53, pp.675~682 (2018)
- J. Jang, "Improvement of Contact Resistance Between Each Silver Nanowire and Thermal Stability of Silver Nanowire Transparent Electrodes by Electrodeposition", Nanosci. Nanotechnol. Lett, 10, pp.528~532 (2018)
- J. Jang, "Cu(In,Ga)Se2 thin film solar cells with solution processed silver nanowire composite window layers: Buffer", window junctions and their effects, 2017, pp.170, 60~67
- B. Bob, "Silver nanowires with semiconducting ligands for low-temperature transparent conductors", Nano Res, 9, pp.392~400 (2016)
- C. -H. Chung, "Solution-processed flexible transparent conductors composed of silver nanowire networks embedded in indium tin oxide nanoparticle matrices", Nano Res, 5, pp.805~814 (2012)
- C. -H. Chung, "Silver nanowire composite window layers for fully solution-deposited thin-film photovoltaic devices", Adv. Mater, 24, pp.5499~5504 (2012)
- D. S. Leem, "Efficient organic solar cells with solution-processed silver nanowire electrodes", Adv. Mater, 23, pp.4371~4375 (2011)
- S. Bae, "Roll-to-roll production of 30-inch graphene films for transparent electrodes", Nat. Nanotechnol, 5, pp.574~578 (2010)
- Y. Lee, "Versatile Metal Nanowiring Platform for Large-Scale Nano-and Opto-Electronic Devices", Adv. Mater, 28, pp.9109~9116 (2016)
- H. Koga, "Uniformly connected conductive networks on cellulose nanofiber paper for transparent paper electronics", NPG Asia Mater, 6, pp.1~8 (2014)
- 최지혜, "스프레이 코팅법으로 증착된 은나노선의 특성에 미치는 분산용매의 영향", 대한금속·재료학회지, 55(7), pp.509~514 (2017), 대한금속·재료학회[DOI]
- S. J. Lee, "A roll-to-roll welding process for planarized silver nanowire electrodes", Nanoscale, 6, pp.11828~11834 (2014)
- H. Sim, "Organic-Stabilizer-Free Polyol Synthesis of Silver Nanowires for Electrode Applications", Angew. Chemie-Int. Ed, 55, pp.11814~11818 (2016)
- S. Cho, "Large-Area Cross-Aligned Silver Nanowire Electrodes for Flexible, Transparent, and Force-Sensitive Mechanochromic Touch Screens", ACS Nano, 11, pp.4346~4357 (2017)
- Q. Sun, "Positively-charged reduced graphene oxide as an adhesion promoter for preparing a highly-stable silver nanowire film", Nanoscale, 7, pp.6798~6804 (2015)
- J. Choe, "Rapid large-grain(>100 μm)formation of organic-inorganic perovskite thin films via shear deposition for photovoltaic application", Sol. Energy, 191, pp.629~636 (2019)
- C. H. Choi, "Large slip of aqueous liquid flow over a nanoengineered superhydrophobic surface", Phys. Rev. Lett, 96, pp.1~4 (2006)
- H. Yu, "A kinetic-hydrodynamic simulation of microstructure of liquid crystal polymers in plane shear flow", J. Nonnewton. Fluid Mech, 141, pp.116~127 (2007)
- B. Park, "Aligned silver nanowire-based transparent electrodes for engineering polarisation-selective optoelectronics", Sci. Rep, 6, pp.1~9 (2016)
- D. M. Kuncicky, "Rapid deposition and long-range alignment of nanocoatings and arrays of electrically conductive wires from tobacco mosaic virus", Small, 2, pp.1462~1466 (2006)
- K. M. Chiang, "Orthogonally weaved silver nanowire networks for very efficient organic optoelectronic devices", Org. Electron, 43, pp.15~20 (2017)
- S. Kang, "Capillary printing of highly aligned silver nanowire transparent electrodes for high-performance optoelectronic devices", Nano Lett, 15, pp.7933~7942 (2015)
- Y. Ko, "Highly Transparent and Stretchable Conductors Based on a Directional Arrangement of Silver Nanowires by a Microliter-Scale Solution Process", Langmuir, 32, pp.366~373 (2016)