For home owners, there has probably never been a better time to know
how to make a solar panel. Thanks to a raft of tax credits and solar
rebates coupled with the falling costs of the components of a solar
system, installing solar power is cheaper today than it has been in
years. Whats more, continuing research is exploring new avenues for
making solar energy even more affordable.
Here are just a few of the technological developments that will enable people to tap into cost effective solar power.
Plant-based Solar Energy
Researchers
at some of the world's leading universities have devised techniques for
using plant cells to generate electricity vastly more efficient than
current solar technology. But how does this work? Well, the photovoltaic
panels isolate the plant proteins that are necessary for
photosynthesis, the method through which plants convert the sun's rays
into solar energy.
The end goal of such research is to one day
build photovoltaic modules that are just as efficient as plants.
Remember, photosynthesis captures and uses almost 100% of sunlight the
plant's leaves are exposed to. Compare that with a conversion rate of
just 40% for the vast majority of solar power units available in the
market today.
Replacing silicon with dye
Dye-sensitive
solar cells are made from a thin film where a photosensitized dye is
used to convert the sun's rays into energy as opposed to the
conventional silicon. The technology makes it no longer necessary to use
expensive metals. While such solar cells are not necessarily cheap,
they do provide significant cost savings. Interestingly, the biggest
cost in the process of how to make a solar panel from dye-sensitive
cells is the metal-based dyes.
But the metal dyes may not be
necessary for long. New research has identified ways of using a resin
for the dyes as opposed to metal. If such new technology makes it into
the market, it will massively cut the cost of how to make a solar panel.
So far, the only drawback has been the lower efficiency of generating
power compared to silicon panels.
Replacing silicon with plastic
Dye
is not the only thing replacing silicon on photovoltaic cells.
Scientists have now identified ways of using lamination to build plastic
panels. Plastic is not only cheaper but it is also sturdier and
lighter. Lamination has also made it easier to automate the process of
producing the panels. The static layers in the plastic panels are more
resistant to weather-induced degradation thus allowing the panels to
last that much longer.
Replacing silicon with copper and copper
oxide - Copper is significantly cheaper than silicon (though far less
visually appealing) and the discovery of ways of making solar panels
from copper should open opportunity for lower cost solar power.
Previously, the use of copper and copper oxide was hampered by its
inability to retain doping agents for long - unlike silicon. To
circumvent this problem in making solar panels, minute electric fields
are used to realize the same results as conventional doping agents.
Saturday, December 8, 2012
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