Sintering Behavior of Ag-Ni Electrode Powder with Core-shell Structure
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Expensive silver powder is used to form electrodes in most IT equipment, and recently, many attempts have been made to lower manufacturing costs by developing powders with Ag-Ni or Ag-Cu core-shell structures. This study examined the sintering behavior of Ag-Ni electrode powder with a core-shell structure for silicon solar cell with high energy efficiency. The electrode powder was found to have a surface similar to pure Ag powder, and cross-sectional analysis revealed that Ag was uniformly coated on Ni powder. Each electrode was formed by sintering in the range of 500oC to 800oC, and the specimen sintered at 600oC had the lowest sheet resistance of 5.5 mΩ/□, which is about two times greater than that of pure Ag. The microstructures of electrodes formed at varying sintering temperatures were examined to determine why sheet resistance showed a minimum value at 600oC. The electrode formed at 600oC had the best Ag connectivity, and thus provided a better path for the flow of electrons.
Abstract
Expensive silver powder is used to form electrodes in most IT equipment, and recently, many attempts have been made to lower manufacturing costs by developing powders with Ag-Ni or Ag-Cu core-shell structures. This study examined the sintering behavior of Ag-Ni electrode powder with a core-shell structure for silicon solar cell with high energy efficiency. The electrode powder was found to have a surface similar to pure Ag powder, and cross-sectional analysis revealed that Ag was uniformly coated on Ni powder. Each electrode was formed by sintering in the range of 500oC to 800oC, and the specimen sintered at 600oC had the lowest sheet resistance of 5.5 mΩ/□, which is about two times greater than that of pure Ag. The microstructures of electrodes formed at varying sintering temperatures were examined to determine why sheet resistance showed a minimum value at 600oC. The electrode formed at 600oC had the best Ag connectivity, and thus provided a better path for the flow of electrons.
참고문헌 (14)
- J. Zhao, "22% efficient perl silicon solar cell:Recent improvements in high efficiency silicon cell research", Sol. Energ. Mat. Sol. C, 41, pp.87~99 (1996)
- J. Zhao, "24.5% efficiency PERT silicon solar cells on SEH MCZ substrates and cell performance on other SEH CZ and FZ substrates", Sol. Energ. Mat. Sol. C, 66, pp.27~36 (2001)
- M. A. Green, "Progress and outlook for high-efficiency crystalline silicon solar cels", Sol. Energ. Mat. Sol. C, 65, pp.9~16 (2001)
- J. Zhao, "Recent advances of high-efficiency single crystalline silicon solar cells in progressing technologies and substrate materials", Sol. Energ. Mat. Sol. C, 82, pp.53~64 (2004)
- I. Repins, "19.9%-efficient ZnO", CdS, Prog. Photovoltaics, pp.2008, 16[DOI]
- P. Jackson, "New world record efficiency for Cu(In,Ga)Se2 thinfilm solar cells beyond 20%", Prog. Photovoltaics, 19, pp.894~897 (2011)
- A. Hagfeldt, "Dye-sensitized solar cells", Chem. Rev, 110, pp.6595~6663 (2010)
- M. Gratzel, "Dye-sensitized solar cells", J. Photoch. Photobio. C, 4, pp.145~153 (2003)
- M. Law, "Nanowire dye-sensitized solar cells", Nat. Mater, 4, pp.455~459 (2005)
- M. A. Green, "The path to 25% solicon solar cell efficiency", Prog. Photovoltaics, 17, pp.183~189 (2009)
- C. C. Lee, "Large-scale synthesis of Ni-Ag core-shell nanoparticles with magnetic, optical and anti-oxidation porperties", Nanotechnology, 17, pp.3094~3099 (2006)
- M. Tsuji, "Rapid synthesis of Ag@Ni core-shell nanoparticles using a microwave-polyol method", Mat. Lett, 64, pp.1793~1797 (2010)
- J. Zhao, "Fabrication of Cu-Ag core-shell bimetallic superfine powders by ecofriendly reagents and structures characterization", J. Solid State Chem, 184, pp.2339~2344 (2011)
- M. Singleton, "The Ag-Ni (silver-Nickel)system", J. Phase Equilib, 8, pp.119~121 (1987)