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وزارات حكومية
# المواقع المعروضة 
# الموقع الزيارات
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Carbon-based Solar Cells

Solar panels need silicon for absorption of light. Silicon doesn’t come cheap.This cost-factor is preventing people from using solar energy on a large scale. Scientists utilize another substance i.e. ruthenium for solar cells. Rutheniumcan is cheaper than silicon but ruthenium is
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