신재생에너지 (New & Renewable Energy)

  • 제8권1호
  • /
  • Pages.18-23
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  • 2012
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  • 1738-3935(pISSN)
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  • 2713-9999(eISSN)
한국신·재생에너지학회 (Korean Society for New and Renewable Energy)
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미세노즐 토출에 적용 가능한 은 전극의 조성에 대한 연구

A Study on the Composition of Silver Paste for Micro Nozzle Dispensing Method

  • 김도형 (한양대학교 신소재공학과) ;
  • 신동욱 (한양대학교 신소재공학과) ;
  • 류성수 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 장효식 (충남대학교 녹색에너지기술전문대학원) ;
  • 김형준 (한국세라믹기술원 엔지니어링세라믹센터)
  • 투고 : 2012.02.16
  • 심사 : 2012.03.16
  • 발행 : 2012.03.25
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초록

The screen printing has been widely used to form silver electrodes in solar cell device due to their simplicity of process. However, the wavy and irregular surface which is believed to be originated from a screen mask mesh and thixotropic characteristics of paste on screen printing process is well-known to give a negative effect on solar cell efficiency. The dispensing method that the silver paste is extruded through micro nozzle under a moderate pressure and coated on substrate can form the silver electrode without any wavy surface. In this study, we optimize the composition of silver paste and develop paste blending condition based on the thixotropic behavior of paste. The optimized paste shows a large thixotropic loop area which is related to an aspect ratio of electrode line and has the viscosity of 40 $Pa{\cdot}s$ at 40 s-1. The electrode line we finally obtainis 67.2 ${\mu}m$ in width and has an aspect ratio of 0.277.

키워드

참고문헌

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