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