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\'Denim\' solar panels to clothe future buildings
Produce materials that look like cowboys.
The Canadian company that developed the material said that the material could cover almost any shape-greatly increasing where solar power is generated.
Inventors want their power.
The materials produced will enable architects to design complex, curved buildings that, nevertheless, can still carry solar cells.
One day, consumer products such as personal audio and mobile phones may also use \"denim clothing \".
Charge their batteries.
Unlike traditional solar cells, this new cheap material has no rigid silicon substrate.
Instead, it is made of thousands of cheap silicon beads sandwiched between two layers of aluminum foil, sealed on both sides with plastic.
Each bead is like a tiny solar cell that absorbs sunlight and converts it into electricity.
The aluminum plate gives the material physical strength and acts as an electrical contact.
The idea came from sphere solar in Cambridge, Ontario, which was patented for the concept in 1997.
Spokesman Milfred Hammerbacher expects the company to start producing flexible panels next year.
Manufacturing process using waste silicon from chips
In the manufacturing industry, it is melted into a sphere about one metre wide.
Next, the core of the silicon ball is doped with boron atoms, which makes it \"p-type” (positive)semiconductor.
Then the phosphorus atom spreads to the outer layer of the bead and converts it into a negative \"n-type” material.
Standby electronics in N-
P-type material flows into the hole
Type-build an electric field on p-n junction.
This field separates the electrons and holes generated when the photons of light are absorbed by silicon.
These charges then flow through the external circuit through the aluminum contacts to generate current.
Simple array making.
The ball is thrown into the perforated aluminum plate, which makes it with n-
Type the material on the surface.
Some exposed n-
Then etching the type surface to show p-
Core and apply a second piece of aluminum-with p-type core.
Then seal the two surfaces with plastic sheets.
The uneven surface presented by the sphere provides a large area for absorbing light, making the overall efficiency of the material 11%.
This is comparable to the performance of conventional photovoltaic cells, much better than the flexible design based on conductive polymers.
Dan Davies, an engineer at London-based renewable energy company Solar Century, said Sphere\'s new materials look very similar to Blue Cowboys.
Architects will like it more than traditional solar panels, he said.
\"At the moment, solar panels are like Ford T-models-there are very few designs.
\"Flexible solar panels can follow the curve of a modern building or roof, because they are much lighter than conventional panels, there is no need for specially reinforced structures to support them.
Especially reinforced structures to support them.