The Effect of EVA Sheet Gel Content Depending on Curing Condition for Photovoltaic Module

PV모듈용 EVA Sheet의 Curing조건에 따른 Gel Content 특성

  • 강기환 (한국에너지기술연구원 태양광발전연구단) ;
  • 김경수 (한국에너지기술연구원 태양광발전연구단) ;
  • 박경은 (한국에너지기술연구원 태양광발전연구단) ;
  • 김현일 (한국에너지기술연구원 태양광발전연구단) ;
  • 유권종 (한국에너지기술연구원 태양광발전연구단)
  • Published : 2006.07.12

Abstract

In this paper, we analyzed the effect of EVA Sheet Gel Content depending on curing condition for photovoltaic module. Gel Content was measured by manufacturing Glass/EVA Sheet/Back Sheet scheme at several curing temperature and curing time. And the surface analysis of EVA Sheet depending on process condition could be observed using SEM(Scanning Electron Microscope). Through this experiment, we could confirm that there are differences on Gel Content of EVA Sheet and surface configuration depending on curing temperature and curing time. To find out the optical characteristic dependency on curing condition, Class/EVA Sheet/Glass scheme was fabricated. The optical transmittance of EVA Sheet at visible wavelength was enhanced 5% when compared to Glass/Glass scheme. And the transmittance of $130^{\circ}C$/4min, $110^{\circ}C$/4min, $160^{\circ}C$/6min process condition was higher at ultraviolet wavelength range. These curing conditions could be regarded as the best process for suppression the discoloration speed of EVA Sheet under UV light.

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