Sunday, January 23, 2011

A Secret of Solar Power In Pokeberry


Pokeberry, a purple berry used as a ink of pens by United States Civil War soldiers to writ letters home. These weeds are being used for a far more modern purpose. Now it could be used to advance solar power in poor rural areas. These berries have the quality to grow rapidly no matter what the season and conditions are whether it is drought, rocky or infertile soil.


 Pokeberry To A Solar Cell

By squeezing juice from a berry might help us squeeze more converted energy from the sun. The pokeberry’s pigment or dye acts like an absorber when it is applied to fiber-based solar cells. It helps cell’s fibers to capture more sunlight and change it into power. As the berries are weed and they has the ability to grow on every continent except Antarctica.

 How Cells Are Made

This process is done by coating titanium oxide nanocrystals with light-absorbing dye molecules and light strikes the dye, electrons are freed. This process creates areas of positive charge as electrons are lost and a titanium oxide particle which is a semi-conductor has the capacity to collect the electrons to an external circuit, producing an electric current. Plastic sheets are embossed with plastic fibers; making millions of tiny ‘cans’ which catch light until it is absorbed. The fibers create a huge surface area, means that sunlight can be collected at any angle from the time the sun rises until it sets.

 Uses of Cell

The newly developed cells are less expensive and these fiber-based cells can generate double power which means better energy efficiency as compared to present flat cells technology. It is expected that these less expensive cells combined with another local plant will help us to produce cheap electricity to developing nations. This system could create an inexpensive and environmentally friendly method of providing electricity as the basic material used is an abundant, non-toxic, mineral i-e titanium dioxide and is commonly used in pharmaceuticals, toothpaste, cosmetics, etc.

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