Material Matters 6.4
نویسنده
چکیده
Global energy consumption is on the rise and is projected to double by 2050, compared with worldwide energy consumption rates in 2001.1 Sustainable energy production based on the direct conversion of energy radiated from the sun into heat or electricity is expected to gain importance, as it may be the only renewable source capable of generating sufficient energy to meet the long-term worldwide energy demand.1,2 The capacity of photovoltaic cells to convert sunlight into electricity makes them prime candidates for effective large-scale capture and conversion of solar energy, but at present the contribution of photovoltaic energy is limited, due to its relatively high cost per kilowatt-hour. A reduction in price may be achieved by either lowering production costs or increasing conversion efficiency.
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