지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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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.
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참고문헌 (8)
참고문헌 신청
H. Fischer / 1974 / Presented at the IEEE Photovoltaic Specialists Conference 10th :404~411
J. Zhao / 1998 / Appl. Phys. Lett 73:1991
J. Knobloch / 1995 / Proc. 13th European PVSEC :9
S. Sterk / 1997 / Proc. 14th European PVSEC :85
M. H. Du / 2005 / Program Review Meeting, Presented at DOE Solar Energy Technologies
J. Zhao / 1998 / Appl. Phys. Lett 73:1991
J. Knobloch / 1995 / Proc. 13th European PVSEC :9
S. Sterk / 1997 / Proc. 14th European PVSEC :85
M. H. Du / 2005 / Program Review Meeting, Presented at DOE Solar Energy Technologies
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