The use of silicon based solar panels are predominant in today's market. The silicon-based solar panels are often heavy (because of the glass used as substrates), which in turn lead to high shipping and installation costs. A better alternative, thin film organic-based solar panel, has gained great interest in recent years.
The researchers at Princeton, in 2004, demonstrated organic photovoltaic cells of improved efficiency by stacking two hybrid, planar, heterojunction organic cells in series. By using copper phthalocyanine as donor and C-60 as acceptor, they were able to collect both long and short wavelength solar energy and a maximum power conversion efficiency of 5.7% with an open voltage cirguit of 1.2 volts.
Conventional silicon-based solar cells cost $2.3 to generate one watt of electricity; the organic-based solar cells cost $0.1 to generate the same amount of electricity. It is expected that these organic-based solar cells will dominate the solar energy market through uses on windows, roofs, mobile devices, or even
clothes etc. The total market for organic solar cells will be $1 billion in 2012 and $6 billion in 2014, as predicted by IDTechEx.
Labels: Solar Cells
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