| Citation: |
Zhang Li, He Qing, Xu Chuanming, Xue Yuming, Wang Chunjing, Shi Chengying, Xiao Jianping, Li Changjian, . Solar Cells Deposited on Stainless Steel Substrate[J]. Journal of Semiconductors, 2006, In Press.
Zhang L, He Q, Xu C M, Xue Y M, Wang C J, Shi C Y, Xiao J P, Li C J, Solar Cells Deposited on Stainless Steel Substrate[J]. Chin. J. Semicond., 2006, 27(10): 1781.
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Solar Cells Deposited on Stainless Steel Substrate
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Abstract
The effects of a Cr diffusion barrier on the performance of flexible Cu(InxGa1-x)Se2(CIGS) solar cells deposited on stainless steel (SS) substrate are investigated.The XRD and SEM results show that the Cr barrier layer can partly block the thermal diffusion of Fe impurities from SS substrate to a CIGS absorber layer and also remarkably reduce the surface roughness of the CIGS layers,and thus the crystalline quality of CIGS thin films is improved.Iron in the compound FeInSe2 forms a deep level defect in the CIGS absorber layers and degrades the photovoltaic properties.Flexible solar cells (with an active area of 0.87cm2) deposited on Soda-Lime glass/Mo,SS/Mo and SS/Cr barrier/Mo,using the same deposition conditions,have conversion efficiencies of 10.7%,7.95%,and 8.58%,respectively.The enhancements of solar cells based on SS are due to the impacts of Cr barriers. -
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