New & Renewable Energy (신재생에너지)

Korean Society for New and Renewable Energy (한국신·재생에너지학회)
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Power Supply for White GaN LED by Using SMD Type Solar Cell Array

SMD 타입 태양전지 어레이를 이용한 white GaN LED용 전원 공급 장치

  • 김성일 (한국과학기술연구원 나노소자센터) ;
  • 이윤표 (한국과학기술연구원 에너지메카닉스센터)
  • Published : 2009.12.25
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Abstract

Using six SMD(surface mount device) type AlGaAs/GaAs single junction solar cells connected in series, a power source was fabricated for a white GaN LED. The electrical properties of the power source was measured and analyzed under one sun (100mW/$cm^2$) and various indoor light (300 - 900 lux) conditions. Under 600 lux indoor light condition, output power was 17.06 ${\mu}W$ and it was 30.75 ${\mu}W$ under 900 lux indoor light condition. Using the fabricated solar cell power supply, we have turned on the white GaN LED. It was worked well under 15 ${\mu}W$(at 480 lux) power supplied from solar cell array. This kind of solar cell power supply can be used as a power source for ubiquitous sensor network (USN).

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