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J. A. Weicht,R. Rasch,G. Behrens,F. U. Hamelmann 대한금속·재료학회 2016 ELECTRONIC MATERIALS LETTERS Vol.12 No.4
For a precise prediction of the energy yield of amorphous (a-Si) and amorphous-microcrystalline tandem (a-Si/μc-Si) thinfilm-silicon photovoltaic (PV) modules it is important to knowtheir performance ratio under different light conditions. Theefficiency of solar modules is an important value for themonitoring and planning of PV-systems. The efficiency of a-Si solar modules shows no significant changes in theperformance ratio at clouded or clear sky conditions. Theefficiency of crystalline silicon-based (c-Si) and a-Si/μc-Sisolar modules shows a lower efficiency for fully cloudedconditions without direct irradiation compared to conditionswith direct irradiation (clear sky).