논문 상세보기

광원의 특성에 따른 Boron-doped p-type Cz-Si 태양전지의 광열화 현상 분석 KCI 등재 SCOPUS

An Analysis of Light Induced Degradation with Optical Source Properties in Boron-Doped P-Type Cz-Si Solar Cells

  • 언어KOR
  • URLhttps://db.koreascholar.com/Article/Detail/297567
구독 기관 인증 시 무료 이용이 가능합니다. 4,000원
한국재료학회지 (Korean Journal of Materials Research)
한국재료학회 (Materials Research Society Of Korea)
초록

When sunlight irradiates a boron-doped p-type solar cell, the formation of BsO2i decreases the power-conversion efficiency in a phenomenon named light-induced degradation (LID). In this study, we used boron-doped p-type Cz-Si solar cells to monitor this degradation process in relation to irradiation wavelength, intensity and duration of the light source, and investigated the reliability of the LID effects, as well. When halogen light irradiated a substrate, the LID rate increased more rapidly than for irradiation with xenon light. For different intensities of halogen light (e.g., 1 SUN and 0.1 SUN), a lower-limit value of LID showed a similar trend in each case; however, the rate reached at the intensity of 0.1 SUN was three times slower than that at 1 SUN. Open-circuit voltage increased with increasing duration of irradiation because the defect-formation rate of LID was slow. Therefore, we suppose that sufficient time is needed to increase LID defects. After a recovery process to restore the initial value, the lower-limit open-circuit voltage exhibited during the re-degradation process showed a trend similar to that in the first degradation process. We suggest that the proportion of the LID in boron-doped p-type Cz-Si solar cells has high correlation with the normalized defect concentrations (NDC) of BsO2i. This can be calculated using the extracted minority-carrier diffusion-length with internal quantum efficiency (IQE) analysis.

저자
  • 김수민(고려대학교 신소재공학과) | Kim, Soo Min
  • 배수현( 고려대학교 신소재공학과) | 배수현
  • 김영도( 고려대학교 신소재공학과) | 김영도
  • 박성은( 고려대학교 신소재공학과) | 박성은
  • 김동환( 고려대학교 신소재공학과) | 김동환
  • 이해석( 고려대학교 신소재공학과) | 이해석
  • 강윤묵( 고려대학교 그린스쿨대학원) | 강윤묵